Supplemental Restraints

‌SPECIFICATIONS

FASTENER SPECIFICATIONS

RESTRAINTS

Supplemental Restraints - Volt

Reusable Threaded Fastener Tightening Specifications

NOTE: All fasteners listed in this table can be reused after removal.
Application	Specification
Application	Metric (English)
Airbag Front End Discriminating Sensor Fastener	7.5 N.m (66 lb in)
Airbag Sensing and Diagnostic Module Nut	9 N.m (80 lb in)
Airbag Side Impact Rear Sensor Fastener	7.5 N.m (66 lb in)
Airbag Side Impact Sensor Fastener	7.5 N.m (66 lb in)
Front and Rear Row Seat Roof Rail Airbag Fastener	9 N.m (80 lb in)
Front Seat Belt Anchor Plate Tensioner Bolt	45 N.m (33 lb ft)
Front Seat Belt Anchor Plate Tensioner Cover Bolt	6 N.m (53 lb in)
Front Seat Belt Retractor Bolt - Lower	45 N.m (33 lb ft)
Front Seat Belt Retractor Bolt - Upper	9 N.m (80 lb in)
Front Seat Belt Retractor D Ring Bolt	45 N.m (33 lb ft)
Front Seat Outboard Seat Back Airbag Nut	3.5 N.m (31 lb in)
Instrument Panel Lower Airbag Nut	9 N.m (80 lb in)
Rear Seat Bolster Airbag Nut	3. 25 N.m (29 lb in)

SCHEMATIC WIRING DIAGRAMS

SIR WIRING SCHEMATICS

Power, Ground, Data Communication and Passenger Presence Detection

Fig. 1: Power, Ground, Data Communication and Passenger Presence Detection Courtesy of GENERAL MOTORS COMPANY

Impact Sensors

Fig. 2: Impact Sensors

Courtesy of GENERAL MOTORS COMPANY

Air Bags

Fig. 3: Air Bags

Courtesy of GENERAL MOTORS COMPANY

Pretensioners

Fig. 4: Pretensioners

Courtesy of GENERAL MOTORS COMPANY

COMPONENT LOCATOR

SIR IDENTIFICATION VIEWS

The SIR Identification Views shown below illustrate the approximate location of all SIR components available for the vehicle. This will assist in determining the appropriate SIR Disabling and Enabling for a given service procedure. Refer to SIR Disabling and Enabling.

Fig. 5: SIR Identification Views

Courtesy of GENERAL MOTORS COMPANY

Callout	Component Name
1	Right Front Impact Sensor - Located under the hood at the front right side of the vehicle
2	Passenger Instrument Panel Air Bag - Located at the top right under the instrument panel
3	Right Roof Rail Air Bag - Located under the headliner, extending from the passenger front windshield pillar to the passenger rear windshield pillar
4	Passenger Knee Air Bag - Located in the instrument panel behind the glove box.
5	Inflatable Restraint Sensing and Diagnostic Module (SDM) - Located underneath the center console
6	Right Front Side Impact Sensor - Located in the right front door
7	Passenger Presence System - Located on the passenger front seat underneath the seat bottom trim
8	Passenger Seat Belt Anchor Pretensioner - Located on the outboard side of the passenger seat
9	Passenger Seat Side Air Bag - Located on the seat back of the passenger seat
10	Passenger Seat Belt Retractor Pretensioner - Located under the trim near the bottom of the center pillar on the passenger side of vehicle
11	Right Rear Side Impact Sensor - Located in the right rear door
12	Inflator Module for Right Roof Rail Air Bag - Located behind the headliner above the C-pillar
13	12 V Battery - Located in the trunk

Callout	Component Name
14	Inflator Module for Left Roof Rail Air Bag - Located behind the headliner above the C-pillar
15	Left Rear Side Impact Sensor - Located in the left rear door
16	Driver Seat Belt Retractor Pretensioner - Located under the trim near the bottom of the center pillar on the driver side of vehicle
17	Driver Seat Side Air Bag - Located on the seat back of the driver seat
18	Driver Seat Belt Anchor Pretensioner - Located on the outboard side of the driver seat
19	300 V Battery - Located in between the driver and passenger seats, underneath the center console
20	Left Front Side Impact Sensor - Located in the left front door
21	Leftt Roof Rail Air Bag - Located under the headliner, extending from the driver front windshield pillar to the driver rear windshield pillar
22	Driver Knee Air Bag - Located in the instrument panel below the steering wheel
23	Driver Steering Wheel Air Bag - Located on the steering wheel
24	Left Front Impact Sensor - Located under the hood at the front left side of the vehicle

DIAGNOSTIC INFORMATION AND PROCEDURES

DTC B0012 OR B0013: DRIVER STEERING WHEEL AIR BAG DEPLOYMENT LOOP STAGE

Diagnostic Instructions

Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Review Strategy Based Diagnosis for an overview of the diagnostic approach.

Diagnostic Procedure Instructions provides an overview of each diagnostic category

DTC Descriptors

DTC B0012 01

Driver Steering Wheel Air Bag Deployment Loop Stage 1 Short to Battery

DTC B0012 02

Driver Steering Wheel Air Bag Deployment Loop Stage 1 Short to Ground

DTC B0012 04

Driver Steering Wheel Air Bag Deployment Loop Stage 1 Open

DTC B0012 0D

Driver Steering Wheel Air Bag Deployment Loop Stage 1 High Resistance

DTC B0012 0E

Driver Steering Wheel Air Bag Deployment Loop Stage 1 Low Resistance

DTC B0013 01

Driver Steering Wheel Air Bag Deployment Loop Stage 2 Short to Battery

DTC B0013 02

Driver Steering Wheel Air Bag Deployment Loop Stage 2 Short to Ground

DTC B0013 04

Driver Steering Wheel Air Bag Deployment Loop Stage 2 Open

DTC B0013 0D

Driver Steering Wheel Air Bag Deployment Loop Stage 2 High Resistance

DTC B0013 0E

Driver Steering Wheel Air Bag Deployment Loop Stage 2 Low Resistance

Diagnostic Fault Information

Circuit	Short to Ground	High Resistance	Open	Short to Voltage	Signal Performance
Driver Steering Wheel Air Bag Stage 1 High Control	B0012 02, B0012 0E	B0012 0D	B0012 04, B0012 0D	B0012 01	-
Driver Steering Wheel Air Bag Stage 1 Low Control	B0012 02, B0012 0E	B0012 0D	B0012 04, B0012 0D	B0012 01	-
Driver Steering Wheel Air Bag Stage 2 High Control	B0013 02, B0013 0E	B0013 0D	B0013 04, B0013 0D	B0013 01	-
Driver Steering Wheel Air Bag Stage 2 Low Control	B0013 02, B0013 0E	B0013 0D	B0013 04, B0013 0D	B0013 01	-

Circuit/System Description

During a frontal crash of sufficient force the inflatable restraint sensing and diagnostic module (SDM) will allow current to flow through the deployment loop in order to deploy the steering wheel air bag. The SDM performs continuous diagnostic tests on the deployment loops to check for proper circuit continuity and for shorts to ground or voltage. There are two shorting bars used within the steering wheel air bag coil connector which will short together both steering wheel air bag stage 1 high control circuit and steering wheel air bag stage 1 low control circuit and both steering wheel air bag stage 2 high control circuit and steering wheel air bag stage 2 low control circuit when the connector is disconnected. This will help to prevent unwanted deployment of the steering wheel air bag during servicing.

Conditions for Running the DTC Ignition voltage is between 9 - 16 V. Conditions for Setting the DTC

B0012 01 stage 1 or B0013 01 stage 2

The steering wheel air bag deployment loop is shorted to voltage for 2 s

B0012 02 stage 1 or B0013 02 stage 2

The steering wheel air bag deployment loop is shorted to ground for 2 s

B0012 04 stage 1 or B0013 04 stage 2

The steering wheel air bag deployment loop is open for 2 s

B0012 0D stage 1 or B0013 0D stage 2

The steering wheel air bag deployment loop resistance is greater than 4.4 Ω for 2 s

B0012 0E stage 1 or B0013 0E stage 2

The steering wheel air bag deployment loop resistance is less than 1.7 Ω for 2 s

Action Taken When the DTC Sets

The inflatable restraint sensing and diagnostic module requests the instrument cluster to illuminate the AIR BAG indicator.

The inflatable restraint sensing and diagnostic module will store a DTC, however if an event occurs the system will still attempt deployment.

Conditions for Clearing the DTC

The condition for setting the DTC is no longer exists.

A history DTC will clear once 100 malfunction-free ignition cycles have occurred.

Diagnostic Aid

NOTE: The following diagnostic aids apply for both current and history DTCs.

A worn steering wheel air bag coil can cause a repeated history DTC to set. To verify this condition, turn the steering wheel 360 degrees in one direction then back 360 degrees in the other direction, multiple times, while viewing the scan tool Deployment Loop Resistance parameters.

An incorrectly installed connector position assurance (CPA) or incorrectly seated connector can cause a shorting bar to short both control circuits together. Check the connectors and CPAs if a DTC with symptom byte 02 or 0E is set, to ensure the shorting bars are not causing the circuits to be shorted together. Shorting bars are used in the locations listed below:

Steering wheel air bag assembly

Steering wheel air bag coil assembly Inline harness connectors

Harness side of the inflatable restraint sensing and diagnostic module connector

Reference Information

Schematic Reference

SIR Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Supplemental Inflatable Restraint System Description and Operation

Electrical Information Reference

Circuit Testing

Testing for Intermittent Conditions and Poor Connections Wiring Repairs

Connector Repairs

Scan Tool Reference

Control Module References for scan tool information Special Tools

EL-38125-580 Terminal Release Tool Kit

Circuit/System Verification

NOTE: Refer to SIR Service Precautions.

Inspect all terminals for damage or corrosion when disconnecting connectors. Damage or corrosion in the following requires repair or replacement of the affected component/connector.

Driver steering wheel air bag

Driver steering wheel air bag coil

Inflatable restraint sensing and diagnostic module Air bag wiring harness connector

Inflatable restraint sensing and diagnostic module wiring harness connector

The connector and connector position assurance (CPA) may seat independent of each other. Both the connector and CPA should seat with an audible and/or tactile click. The CPA isolates the shorting-bars within the connector allowing the deployment circuit to operate properly. Replace

any CPA that is damaged or missing.

If the condition is intermittent or cannot be duplicated, disconnect the connectors and add dielectric grease / lubricant (Nyogel 760G or equivalent, meeting GM specification 9986087). This procedure will correct the high resistance condition due to terminal fretting corrosion.

1. Verify the appropriate scan tool Deployment Loop Resistance parameters stay consistently between 2.1 -

4.0 Ω without any spikes or dropouts while turning the steering wheel 360 degrees in one direction then back 360 degrees in the other direction.

If less than 2.1 Ω or greater than 4.0 Ω

Refer to Circuit/System Testing.

If there are spikes or dropouts

Replace the X85 Steering Wheel Air Bag Coil.

If between 2.1 - 4.0 Ω without any spikes or dropouts

2. Verify DTC B0012 or B0013 is only set as a history DTC.

If the DTC is set as current

Refer to Circuit/System Testing.

If the DTC is set as history

3. Verify the scan tool Deployment Loop Resistance parameters stay consistently between 2.1 - 4.0 Ω

without any drop outs or spikes while moving the harness near each connector listed below.

X85 Steering Wheel Air Bag Coil F107 Steering Wheel Air Bag

Any inline harness connector

K36 Inflatable Restraint Sensing and Diagnostic Module

If the reading is erratic while moving the harness, perform the following

Inspect each connector terminal for damage or corrosion and repair as necessary

Apply dielectric grease / lubricant (Nyogel 760G or equivalent, meeting GM specification 9986087) to each connector terminal

Ensure each connector and CPA is correctly seated

If between 2.1 - 4.0 Ω without any spikes or dropouts

4. All OK.

Circuit/System Testing

1. Ignition OFF, disconnect the scan tool and disconnect the appropriate harness connector listed below at the F107 Driver Steering Wheel Air Bag.

DTC B0012 connector X1 DTC B0013 connector X2

2. Test for greater than 25 Ω between the control circuit terminal 1 and the control circuit terminal 2.

If 25 Ω or less

1. Disconnect the X1 harness connector at the K36 Inflatable Restraint Sensing and Diagnostic Module.

NOTE: Some connectors may be equipped with shorting bars as a safety component to prevent accidental deployment. When testing on a connector with shorting bars, the shorting bars must be disabled to ensure accurate test results. Insert an appropriate pick from

EL-38125-580 and depress the shorting bars above the appropriate terminals. This will lift the shorting bar from the terminal and allow accurate test results. Take care not to damage the connector, shorting bar, or terminal when depressing the shorting bar.

2. Test for infinite resistance between the two control circuits.

If less than infinite resistance, repair the short between the two circuits.

If infinite resistance, replace the K36 Inflatable Restraint Sensing and Diagnostic Module.

If greater than 25 Ω

3. Ignition ON.

4. Test for less than 11 V between each control circuit terminal listed below and ground: Control circuit terminal 1

Control circuit terminal 2

If 11 V or greater

1. Ignition OFF, disconnect the X1 harness connector at the K36 Inflatable Restraint Sensing and Diagnostic Module, ignition ON.

2. Test for less than 1 V between the control circuit and ground.

If 1 V or greater, repair the short to voltage on the circuit.

If less than 1 V, replace the K36 Inflatable Restraint Sensing and Diagnostic Module.

If less than 11 V

5. Ignition OFF.

6. Test for greater than 25 Ω between each control circuit terminal listed below and ground: Control circuit terminal 1

Control circuit terminal 2

If 25 Ω or less

1. Disconnect the X1 harness connector at the K36 Inflatable Restraint Sensing and Diagnostic Module.

EL-38125-580 and depress the shorting bars above the appropriate terminals. This will lift the shorting bar from the terminal and allow

accurate test results. Take care not to damage the connector, shorting bar, or terminal when depressing the shorting bar.

2. Test for infinite resistance between the control circuit and ground.

If less than infinite resistance, repair the short to ground on the circuit.

If infinite resistance, replace the K36 Inflatable Restraint Sensing and Diagnostic Module.

If greater than 25 Ω

7. Install a 3 A fused jumper wire between the control circuit terminal 1 and the control circuit terminal 2, ignition ON.

8. Verify the appropriate scan tool Deployment Loop Resistance parameter is consistently less than 2 Ω

while turning the steering wheel 360 degrees in one direction then back 360 degrees in the other direction.

If the reading is erratic while turning the steering wheel

Replace the X85 Steering Wheel Air Bag Coil.

If 2 Ω or greater

1. Ignition OFF, disconnect the X1 harness connector at the K36 Inflatable Restraint Sensing and Diagnostic Module.

2. Test for less than 2 Ω in the K85 Steering Wheel Airbag Coil and each control circuit end to end.

If 2 Ω or greater, replace the X85 Steering Wheel Air Bag Coil or repair the open/high resistance in the circuit.

If less than 2 Ω, replace the K36 Inflatable Restraint Sensing and Diagnostic Module.

If less than 2 Ω

9. Ignition OFF, connect the harness connector at the F107 Steering Wheel Air Bag, press in the CPA (if equipped) until an audible and/or tactile click is heard.

10. Ignition ON, clear DTCs. Operate the vehicle within the Conditions for Running the DTC.

11. Verify DTC B0012 or B0013 is not set.

If DTC B0012 or B0013 is set

Test or replace the F107 Steering Wheel Air Bag.

If DTC B0012 or B0013 is not set

12. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

Steering Wheel Airbag Coil Replacement Steering Wheel Airbag Replacement

SIR/SRS Wiring Repairs

Control Module References for inflatable restraint sensing and diagnostic module replacement, programming and setup

DTC B0014, B0021, B0031, OR B0038: SEAT SIDE AIR BAG DEPLOYMENT LOOPS

Diagnostic Instructions

Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Review Strategy Based Diagnosis for an overview of the diagnostic approach.

Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC B0014 01

Driver Seat Side Air Bag Deployment Loop Short to Battery

DTC B0014 02

Driver Seat Side Air Bag Deployment Loop Short to Ground

DTC B0014 04

Driver Seat Side Air Bag Deployment Loop Open

DTC B0014 0D

Driver Seat Side Air Bag Deployment Loop High Resistance

DTC B0014 0E

Driver Seat Side Air Bag Deployment Loop Low Resistance

DTC B0021 01

Passenger Seat Side Air Bag Deployment Loop Short to Battery

DTC B0021 02

Passenger Seat Side Air Bag Deployment Loop Short to Ground

DTC B0021 04

Passenger Seat Side Air Bag Deployment Loop Open

DTC B0021 0D

Passenger Seat Side Air Bag Deployment Loop High Resistance

DTC B0021 0E

Passenger Seat Side Air Bag Deployment Loop Low Resistance

DTC B0031 01

Left Rear Seat Side Air Bag Deployment Loop Short to Battery

DTC B0031 02

Left Rear Seat Side Air Bag Deployment Loop Short to Ground

DTC B0031 04

Left Rear Seat Side Air Bag Deployment Loop Open

DTC B0031 0D

Left Rear Seat Side Air Bag Deployment Loop High Resistance

DTC B0031 0E

Left Rear Seat Side Air Bag Deployment Loop Low Resistance

DTC B0038 01

Right Rear Seat Side Air Bag Deployment Loop Short to Battery

DTC B0038 02

Right Rear Seat Side Air Bag Deployment Loop Short to Ground

DTC B0038 04

Right Rear Seat Side Air Bag Deployment Loop Open

DTC B0038 0D

Right Rear Seat Side Air Bag Deployment Loop High Resistance

DTC B0038 0E

Right Rear Seat Side Air Bag Deployment Loop Low Resistance

Diagnostic Fault Information

Circuit	Short to Ground	High Resistance	Open	Short to Voltage	Signal Performance
Left Front Seat Side Air Bag High Control	B0014 02, B0014 0E	B0014 0D	B0014 04, B0014 0D	B0014 01	-
Left Front Seat Side Air Bag Low Control	B0014 02, B0014 0E	B0014 0D	B0014 04, B0014 0D	B0014 01	-
Right Front Seat Side Air Bag High Control	B0021 02, B0021 0E	B0021 0D	B0021 04, B0021 0D	B0021 01	-
Right Front Seat Side Air Bag Low Control	B0021 02, B0021 0E	B0021 0D	B0021 04, B0021 0D	B0021 01	-

Circuit	Short to Ground	High Resistance	Open	Short to Voltage	Signal Performance
Left Rear Seat Side Air Bag High Control	B0031 02, B0031 0E	B0031 0D	B0031 04, B0031 0D	B0031 01	-
Left Rear Seat Side Air Bag Low Control	B0031 02, B0031 0E	B0031 0D	B0031 04, B0031 0D	B0031 01	-
Right Rear Seat Side Air Bag High Control	B0038 02, B0038 0E	B0038 0D	B0038 04, B0038 0D	B0038 01	-
Right Rear Seat Side Air Bag Low Control	B0038 02, B0038 0E	B0038 0D	B0038 04, B0038 0D	B0038 01	-

Circuit/System Description

During a side or frontal crash of sufficient force, the inflatable restraint sensing and diagnostic module (SDM) will allow current to flow through the deployment loop in order to deploy an air bag. There are 2 shorting bars used within the connector that will short the control circuits together when the connector is disconnected. This will help to prevent unwanted deployment of the air bag or retractor pretensioner during servicing.

Conditions for Running the DTC Ignition voltage is between 9 - 16 V. Conditions for Setting the DTC

B0014 01, B0021 01, B0031 01, B0038 01

The air bag control circuit is shorted to voltage for 2 seconds.

B0014 02, B0021 02, B0031 02, B0038 02

The air bag control circuit is shorted to ground for 2 seconds.

B0014 04, B0021 04, B0031 04, B0038 04

The air bag control circuit is open for 2 seconds.

B0014 0D, B0021 0D, B0031 0D, B0038 0D

The air bag deployment loop resistance is greater than 4.2 Ω for 2 seconds.

B0014 0E, B0021 0E, B0031 0E, B0038 0E

The air bag deployment loop resistance is less than 1.4 Ω for 2 seconds.

Action Taken When the DTC Sets

The inflatable restraint sensing and diagnostic module requests the instrument cluster to illuminate the AIR BAG indicator.

The inflatable restraint sensing and diagnostic module will store a DTC, however if an event occurs the system will still attempt deployments.

Conditions for Clearing the DTC

The condition for setting the DTC no longer exists.

A history DTC will clear once 100 malfunction-free ignition cycles have occurred.

Diagnostic Aid

NOTE: The following diagnostic aids apply for both current and history DTCs.

Front and rear seat side air bags Left and right roof rail air bags Inline harness connectors

Harness side of the inflatable restraint sensing and diagnostic module connector

Terminal fretting or incorrectly seated connector can cause an open/high resistance condition. Check the circuit terminals for fretting or incorrectly seated connector if a DTC with symptom byte 04 or 0D is set. DTCs of deployment loops which are in the seat can occur because of stress or damage to the harness due to seat movement. Move the seat to the full extent of travel while using the scan tool to observe deployment type loop parameters.

Reference Information

Schematic Reference

SIR Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Supplemental Inflatable Restraint System Description and Operation

Electrical Information Reference

Circuit Testing

Testing for Intermittent Conditions and Poor Connections Wiring Repairs

Connector Repairs

Scan Tool Reference

Control Module References for scan tool information

Special Tools

EL-38125-580 Terminal Release Tool Kit

Circuit/System Verification

NOTE: Refer to SIR Service Precautions.

Inspect all terminals for damage or corrosion when disconnecting connectors. Damage or corrosion in the following requires repair or replacement of the affected component/connector.

Seat side air bag

Inflatable restraint sensing and diagnostic module All wiring harness connectors

Inflatable restraint sensing and diagnostic module wiring harness connector

If the condition is intermittent or cannot be duplicated, disconnect the connectors and add dielectric grease/lubricant (Nyogel 760G or equivalent, meeting GM specification 9986087). This procedure will correct the high resistance condition due to terminal fretting corrosion.

1. Verify the appropriate scan tool Deployment Loop Resistance parameters stay consistently between 2.1 -

4.0 Ω without any spikes or dropouts while moving the harness near each connector. F106 Seat Side Air Bag

Any inline harness connector

K36 Inflatable Restraint Sensing and Diagnostic Module

If less than 2.1 Ω or greater than 4.0 Ω

Refer to Circuit/System Testing.

If there are spikes or dropouts, perform the following:

Inspect each connector terminal and harness for damage or corrosion and repair as necessary.

Apply dielectric grease/lubricant (Nyogel 760G or equivalent, meeting GM specification 9986087) to each connector terminal.

Ensure each connector and CPA is correctly seated.

If between 2.1 - 4.0 Ω without any spikes or dropouts

2. All OK

Circuit/System Testing

1. Ignition OFF, scan tool disconnected, disconnect the harness connector at the appropriate F106 Seat Side Air Bag.

2. Test for greater than 25 Ω between the control circuit terminals 1 and 2.

If 25 Ω or less

1. Disconnect the X2 harness connector at the K36 Inflatable Restraint Sensing and Diagnostic Module.

2. Test for infinite resistance between the 2 control circuits.

If less than infinite resistance, repair the short between the 2 circuits.

If infinite resistance, replace the K36 Inflatable Restraint Sensing and Diagnostic Module.

If greater than 25 Ω

3. Ignition ON.

4. Test for less than 11 V between each control circuit terminal listed below and ground: Control circuit terminal 1

Control circuit terminal 2

If 11 V or greater

1. Ignition OFF, disconnect the X2 harness connector at the K36 Inflatable Restraint Sensing and Diagnostic Module, ignition ON.

2. Test for less than 1 V between the control circuit and ground.

If 1 V or greater, repair the short to voltage on the circuit.

If less than 1 V, replace the K36 Inflatable Restraint Sensing and Diagnostic Module.

If less than 11 V

5. Ignition OFF.

6. Test for greater than 25 Ω between each control circuit terminal listed below and ground: Control circuit terminal 1

Control circuit terminal 2

If 25 Ω or less

1. Disconnect the X2 harness connector at the K36 Inflatable Restraint Sensing and Diagnostic Module.

2. Test for infinite resistance between the control circuit and ground.

If less than infinite resistance, repair the short to ground on the circuit.

If infinite resistance, replace the K36 Inflatable Restraint Sensing and Diagnostic Module.

If greater than 25 Ω

7. Install a 3 A fused jumper wire between the control circuit terminals 1 and 2, ignition ON.

8. Verify the appropriate scan tool Deployment Loop Resistance parameter is less than 2 Ω.

If 2 Ω or greater

1. Ignition OFF, disconnect the X2 harness connector at the K36 Inflatable Restraint Sensing and Diagnostic Module.

2. Test for less than 2 Ω in each control circuit end to end.

If 2 Ω or greater, repair the open/high resistance in the circuit.

If less than 2 Ω, replace the K36 Inflatable Restraint Sensing and Diagnostic Module.

If less than 2 Ω

9. Ignition OFF, connect the harness connector at the F106 Seat Side Air Bag, press in the CPA (if equipped) until an audible and/or tactile click is heard.

10. Ignition ON, clear DTCs. Operate the vehicle within the Conditions for Running the DTC.

11. Verify DTC B0014, B0021, B0031, or B0038 is not set.

If DTC B0014, B0021, B0031, or B0038 is set

Test or replace the F106 Seat Side Air Bag.

If DTC B0014, B0021, B0031, or B0038 is not set

12. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

Front Seat Outboard Seat Back Airbag Replacement Rear Seat Bolster Airbag Replacement

Control Module References for inflatable restraint sensing and diagnostic module replacement, programming, and setup

DTC B0015, B001A, B001B, OR B0022: SEAT BELT RETRACTOR PRETENSIONER DEPLOYMENT LOOPS/SEAT BELT ANCHOR PRETENSIONER DEPLOYMENT LOOPS

Diagnostic Instructions

Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Review Strategy Based Diagnosis for an overview of the diagnostic approach.

Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC B0015 01

Driver Seat Belt Retractor Pretensioner Deployment Loop Short to Battery

DTC B0015 02

Driver Seat Belt Retractor Pretensioner Deployment Loop Short to Ground

DTC B0015 04

Driver Seat Belt Retractor Pretensioner Deployment Loop Open

DTC B0015 0D

Driver Seat Belt Retractor Pretensioner Deployment Loop High Resistance

DTC B0015 0E

Driver Seat Belt Retractor Pretensioner Deployment Loop Low Resistance

DTC B001A 01

Driver Seat Belt Anchor Pretensioner Deployment Loop Short to Battery

DTC B001A 02

Driver Seat Belt Anchor Pretensioner Deployment Loop Short to Ground

DTC B001A 04

Driver Seat Belt Anchor Pretensioner Deployment Loop Open

DTC B001A 0D

Driver Seat Belt Anchor Pretensioner Deployment Loop High Resistance

DTC B001A 0E

Driver Seat Belt Anchor Pretensioner Deployment Loop Low Resistance

DTC B001B 01

Passenger Seat Belt Anchor Pretensioner Deployment Loop Short to Battery

DTC B001B 02

Passenger Seat Belt Anchor Pretensioner Deployment Loop Short to Ground

DTC B001B 04

Passenger Seat Belt Anchor Pretensioner Deployment Loop Open

DTC B001B 0D

Passenger Seat Belt Anchor Pretensioner Deployment Loop High Resistance

DTC B001B 0E

Passenger Seat Belt Anchor Pretensioner Deployment Loop Low Resistance

DTC B0022 01

Passenger Seat Belt Retractor Pretensioner Deployment Loop Short to Battery

DTC B0022 02

Passenger Seat Belt Retractor Pretensioner Deployment Loop Short to Ground

DTC B0022 04

Passenger Seat Belt Retractor Pretensioner Deployment Loop Open Circuit

DTC B0022 0D

Passenger Seat Belt Retractor Pretensioner Deployment Loop High Resistance

DTC B0022 0E

Passenger Seat Belt Retractor Pretensioner Deployment Loop Low Resistance

Diagnostic Fault Information

Circuit	Short to Ground	High Resistance	Open	Short to Voltage	Signal Performance
Driver Seat Belt Retractor Pretensioner High Control	B0015 02, B0015 0E	B0015 0D	B0015 04, B0015 0D	B0015 01	-
Driver Seat Belt Retractor Pretensioner Low Control	B0015 02, B0015 0E	B0015 0D	B0015 04, B0015 0D	B0015 01	-
Driver Seat Belt Anchor Pretensioner Low Control	B001A 02, B001A 0E	B001A 0D	B001A 04	B001A 01	-
Driver Seat Belt Anchor Pretensioner High Control	B001A 02, B001A 0E	B001A 0D	B001A 04	B001A 01	-
Passenger Seat Belt Anchor Pretensioner Low Control	B001B 02, B001B 0E	B001B 0D	B001B 04	B001B 01	-
Passenger Seat Belt Anchor Pretensioner High Control	B001B 02, B001B 0E	B001B 0D	B001B 04	B001B 01	-
Passenger Seat Belt Retractor Pretensioner High Control	B0022 02, B0022 0E	B0022 0D	B0022 04, B0022 0D	B0022 01	-
Passenger Seat Belt Retractor Pretensioner Low Control	B0022 02, B0022 0E	B0022 0D	B0022 04, B0022 0D	B0022 01	-

Circuit/System Description

During a side or frontal crash of sufficient force the Inflatable Restraint Sensing and Diagnostic Module will allow current to flow through the deployment loop in order to deploy an air bag or pretensioner. There are 2 shorting bars which will short together control circuits, when the connector is disconnected. This will help to prevent unwanted deployment of the air bag or pretensioner during servicing.

Conditions for Running the DTC

Ignition voltage is between 9 - 16 V.

Conditions for Setting the DTC

B0015 01, B001A 01, B001B 01, B0022 01

The pretensioner control circuit is shorted to voltage for 2 seconds.

B0015 02, B001A 02, B001B 02, B0022 02

The pretensioner control circuit is shorted to ground for 2 seconds.

B0015 04, B001A 04, B001B 04, B0022 04

The pretensioner control circuit is open for 2 seconds.

B0015 0D, B001A 0D, B001B 0D, B0022 0D

The pretensioner deployment loop resistance is greater than 4.2 Ω for 2 seconds.

B0015 0E, B001A 0E, B001B 0E, B0022 0E

The pretensioner deployment loop resistance is less than 1.4 Ω for 2 seconds.

Action Taken When the DTC Sets

The Inflatable Restraint Sensing and Diagnostic Module requests the Instrument Cluster to illuminate the AIR BAG indicator.

The Inflatable Restraint Sensing and Diagnostic Module will store a DTC, however if an event occurs the system will still attempt deployments.

Conditions for Clearing the DTC

The condition for setting the DTC no longer exists.

A history DTC will clear once 100 malfunction-free ignition cycles have occurred.

Diagnostic Aid

NOTE: The following diagnostic aids apply for both current and history DTCs.

An incorrectly installed CPA or incorrectly seated connector can cause a shorting bar to short both control circuits together. Check the connectors and CPAs if a DTC with symptom byte 02 or 0E is set, to ensure the shorting bars are not causing the circuits to be shorted together. Shorting bars are used in the locations listed below:

Driver and passenger anchor or retractor pretensioners Inline connectors - on the side of the harness connector

Harness side of the inflatable restraint sensing and diagnostic module connector

Terminal fretting or incorrectly seated connectors can cause an open/high resistance condition. Check the circuit terminals for fretting or incorrectly seated connector if a DTC with symptom byte 04 or 0D is set. DTCs of deployment loops which are in the seat can occur because of stress or damage to the harness due to seat movement. Move the seat to the full extend of travel while using the scan tool to observe deployment type loop

parameters. Reference Information Schematic Reference

SIR Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Supplemental Inflatable Restraint System Description and Operation

Electrical Information Reference

Circuit Testing

Testing for Intermittent Conditions and Poor Connections Wiring Repairs

Connector Repairs

Scan Tool Reference

Control Module References for scan tool information Special Tools

EL-38125-580 Terminal Release Tool Kit

Circuit/System Verification

NOTE: Refer to SIR Service Precautions.

Inspect all terminals for damage or corrosion when disconnecting connectors. Damage or corrosion in the following requires repair or replacement of the affected component/connector.

Seat belt retractor pretensioner

Seat belt retractor pretensioner wiring harness connector Seat belt anchor pretensioner

Seat belt anchor pretensioner wiring harness connector Inflatable Restraint Sensing and Diagnostic Module

Inflatable Restraint Sensing and Diagnostic Module wiring harness connector

1. Verify the scan tool Deployment Loop Resistance parameters stay consistently between 2.1 and 4.0 Ω

without any spikes or dropouts while moving the harness near each connector listed below: F112 Seat Belt Retractor Pretensioner

F113 Seat Belt Anchor Pretensioner Any inline harness

K36 Inflatable Restraint Sensing and Diagnostic Module

If less than 2.1 or greater than 4.0 Ω

Refer to Circuit/System Testing.

If there are spikes or dropouts, perform the following

Inspect each connector terminal and harness for damage or corrosion and repair as necessary. Apply dielectric grease / lubricant (Nyogel 760G or equivalent, meeting GM specification

9986087) to each connector terminal.

Ensure each connector and CPA is correctly seated.

If within 2.1 and 4.0 Ω without any spikes or dropouts

2. All OK.

Circuit/System Testing

1. Vehicle OFF, disconnect the scan tool. It may take up to 2 minutes for all vehicle systems to power down. Disconnect the appropriate harness connector listed below:

F112 Seat Belt Retractor Pretensioner F113 Seat Belt Anchor Pretensioner

2. Test for greater than 25 Ω between the appropriate control circuit terminals listed below: F112 Seat Belt Retractor Pretensioner terminals 1 and 2

F113 Seat Belt Anchor Pretensioner terminals 1 and 2

If 25 Ω or less

1. Disconnect the harness connector at the K36 Inflatable Restraint Sensing and Diagnostic Module.

NOTE: Some connectors may be equipped with shorting bars as a safety component to prevent accidental inflator deployment. When testing on a connector with shorting bars, the shorting bars must be disabled to ensure accurate test results. Insert an appropriate pick from EL-38125-580 and depress the shorting bars above the appropriate terminals. This will lift the shorting bar from the terminal and allow accurate test results. Take care not to damage the connector, shorting bar, or terminal when depressing the shorting bar.

2. Test for infinite resistance between the 2 control circuits.

If less than infinite resistance, repair the short between the two circuits.

If infinite resistance, replace the K36 Inflatable Restraint Sensing and Diagnostic Module.

If greater than 25 Ω

3. Vehicle in Service Mode.

4. Test for less than 11 V between the control circuit terminals listed below and ground: F112 Seat Belt Retractor Pretensioner terminal 1

F112 Seat Belt Retractor Pretensioner terminal 2 F113 Seat Belt Anchor Pretensioner terminal 1

F113 Seat Belt Anchor Pretensioner terminal 2

If 11 V or greater

1. Vehicle OFF, disconnect the harness connector at the K36 Inflatable Restraint Sensing and Diagnostic Module, vehicle in Service Mode.

2. Test for less than 1 V between each control circuit and ground. If 1 V or greater, repair the short to voltage on the circuit.

If less than 1 V, replace the K36 Inflatable Restraint Sensing and Diagnostic Module.

If less than 11 V

5. Vehicle OFF. It may take up to 2 minutes for all vehicle systems to power down.

6. Test for greater than 25 Ω between the control circuit terminals listed below and ground: F112 Seat Belt Retractor Pretensioner terminal 1

F112 Seat Belt Retractor Pretensioner terminal 2 F113 Seat Belt Anchor Pretensioner terminal 1

F113 Seat Belt Anchor Pretensioner terminal 2

If 25 Ω or less

1. Disconnect the harness connector at the K36 Inflatable Restraint Sensing and Diagnostic Module.

2. Test for infinite resistance between each control circuit and ground.

If less than infinite resistance, repair the short to ground on the circuit.

If infinite resistance, replace the K36 Inflatable Restraint Sensing and Diagnostic Module.

If greater than 25 Ω

7. Install a 3 A fused jumper wire between the appropriate control circuit terminals listed below: F112 Seat Belt Retractor Pretensioner terminals 1 and 2

F113 Seat Belt Anchor Pretensioner terminals 1 and 2

8. Vehicle in Service Mode.

9. Verify the scan tool Deployment Loop Resistance parameter is less than 2 Ω.

If 2 Ω or greater

1. Vehicle OFF.

2. Disconnect the harness connector at the K36 Inflatable Restraint Sensing and Diagnostic Module.

3. Test for less than 2 Ω in each control circuit end to end.

If 2 Ω or greater, repair the open/high resistance in the circuit.

If less than 2 Ω, replace the K36 Inflatable Restraint Sensing and Diagnostic Module.

If less than 2 Ω

10. Vehicle OFF, connect the harness connector at the F112 Seat Belt Retractor Pretensioner or F113 Seat Belt Anchor Pretensioner, press in the CPA (if equipped) until an audible and/or tactile click is heard.

11. Vehicle in Service Mode, clear DTCs. Operate the vehicle within the Conditions for Running the DTC.

12. Verify DTC B0015, B001A, B001B, or B0022 is not set.

If B0015, B001A, B001B, or B0022 is set

Replace the appropriate F112 Seat Belt Retractor Pretensioner or F113 Seat Belt Anchor Pretensioner.

If DTC B0015, B001A, B001B, or B0022 is not set

13. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

Front Seat Belt Anchor Plate Tensioner Replacement Front Seat Belt Retractor Replacement

Control Module References for Inflatable Restraint Sensing and Diagnostic Module replacement, programming and setup

DTC B0016, B0018, B0023, OR B0025: LEFT/RIGHT ROOF RAIL AIR BAG DEPLOYMENT LOOP

Diagnostic Instructions

Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Review Strategy Based Diagnosis for an overview of the diagnostic approach.

Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC B0016 01

Left Roof Rail Air Bag Deployment Loop Short to Battery

DTC B0016 02

Left Roof Rail Air Bag Deployment Loop Short to Ground

DTC B0016 04

Left Roof Rail Air Bag Deployment Loop Open

DTC B0016 0D

Left Roof Rail Air Bag Deployment Loop High Resistance

DTC B0016 0E

Left Roof Rail Air Bag Deployment Loop Low Resistance

DTC B0023 01

Right Roof Rail Air Bag Deployment Loop Short to Battery

DTC B0023 02

Right Roof Rail Air Bag Deployment Loop Short to Ground

DTC B0023 04

Right Roof Rail Air Bag Deployment Loop Open

DTC B0023 0D

Right Roof Rail Air Bag Deployment Loop High Resistance

DTC B0023 0E

Right Roof Rail Air Bag Deployment Loop Low Resistance

Diagnostic Fault Information

Circuit	Short to Ground	High Resistance	Open	Short to Voltage	Signal Performance
Left Roof Rail Air Bag High Control	B0016 02, B0016 0E	B0016 0D	B0016 04, B0016 0D	B0016 01	-
Left Roof Rail Air Bag Low Control	B0016 02, B0016 0E	B0016 0D	B0016 04, B0016 0D	B0016 01	-
Right Roof Rail Air Bag High Control	B0023 02, B0023 0E	B0023 0D	B0023 04, B0023 0D	B0023 01	-
Right Roof Rail Air Bag Low Control	B0023 02, B0023 0E	B0023 0D	B0023 04, B0023 0D	B0023 01	-

Circuit/System Description

During a side or frontal crash of sufficient force the inflatable restraint sensing and diagnostic module (SDM) will allow current to flow through the deployment loop in order to deploy an air bag or pretensioner. There are 2 shorting bars which will short together control circuits, when the connector is disconnected. This will help to prevent unwanted deployment of the air bag or pretensioner during servicing.

Conditions for Running the DTC Ignition voltage is between 9 - 16 V. Conditions for Setting the DTC B0016 01, B0023 01

The air bag control circuit is shorted to voltage for 2 seconds.

B0016 02, B0023 02

The air bag control circuit is shorted to ground for 2 seconds.

B0016 04, B0023 04

The air bag control circuit is open for 2 seconds.

B0016 0D, B0023 0D

The air bag deployment loop resistance is greater than 4.2 Ω for 2 seconds.

B0016 0E, B0023 0E

The air bag deployment loop resistance is less than 1.4 Ω for 2 seconds.

Action Taken When the DTC Sets

The inflatable restraint sensing and diagnostic module requests the instrument cluster to illuminate the AIR BAG indicator.

The inflatable restraint sensing and diagnostic module will store a DTC, however if an event occurs the system will still attempt deployments.

Conditions for Clearing the DTC

The condition for setting the DTC no longer exists.

A history DTC will clear once 100 malfunction-free ignition cycles have occurred.

Diagnostic Aid

NOTE: The following diagnostic aids apply for both current and history DTCs.

Left and right roof rail air bags Inline harness connectors

Harness side of the inflatable restraint sensing and diagnostic module connector

Terminal fretting or incorrectly seated connectors can cause an open/high resistance condition. Check the circuit terminals for fretting or incorrectly seated connector if a DTC with symptom byte 04 or 0D is set. DTCs of deployment loops which are in the seat DTC can occur because of stress or damage to the harness due to seat movement. Move the seat to the full extent of travel while using the scan tool to observe deployment type loop parameters.

Reference Information

Schematic Reference

SIR Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Supplemental Inflatable Restraint System Description and Operation

Electrical Information Reference

Circuit Testing

Testing for Intermittent Conditions and Poor Connections Wiring Repairs

Connector Repairs

Scan Tool Reference

Control Module References for scan tool information Special Tools

EL-38125-580 Terminal Release Tool Kit

Circuit/System Verification

NOTE: Refer to SIR Service Precautions.

Inspect all terminals for damage or corrosion when disconnecting connectors. Damage or corrosion in the following requires repair or replacement of the affected component/connector.

Roof rail air bag

Roof rail air bag wiring harness connector

Inflatable restraint sensing and diagnostic module

Inflatable restraint sensing and diagnostic module wiring harness connector

1. Verify the appropriate scan tool Deployment Loop Resistance parameter stays consistently between 2.1 and 4.0 Ω without any spikes or dropouts while moving the harness near each connector listed below:

F105L Roof Rail Air Bag - Left F105R Roof Rail Air Bag - Right Any inline harness connector

K36 inflatable restraint sensing and diagnostic module

If less than 2.1 or greater than 4.0 Ω

Refer to Circuit/System Testing.

If there are spikes or dropouts, perform the following

Inspect each connector terminal and harness for damage or corrosion and repair as necessary Ensure each connector and CPA is correctly seated.

If within 2.1 and 4.0 Ω without any spikes or dropouts

2. All OK

Circuit/System Testing

1. Ignition OFF. Scan tool disconnected. Disconnect the harness connector at the appropriate F105 Roof Rail Air Bag. It may take up to 2 min for all vehicle systems to power down.

2. Test for greater than 25 Ω between the control circuit terminals 1 and 2.

If 25 Ω or less

1. Disconnect the X2 harness connector at the K36 inflatable restraint sensing and diagnostic module.

2. Test for infinite resistance between the two control circuits.

If less than infinite resistance, repair the short between the two circuits.

If infinite resistance, replace the K36 inflatable restraint sensing and diagnostic module.

If greater than 25 Ω

3. Ignition ON.

4. Test for less than 11 V between the control circuit terminals listed below and ground: Control circuit terminal 1

Control circuit terminal 2

If 11 V or greater

1. Ignition OFF. Disconnect the X2 harness connector at the K36 inflatable restraint sensing and

diagnostic module. Ignition ON.

2. Test for less than 1 V between the control circuit and ground.

If 1 V or greater, repair the short to voltage on the circuit.

If less than 1 V, replace the K36 inflatable restraint sensing and diagnostic module.

If less than 11 V

5. Ignition OFF.

6. Test for greater than 25 Ω between the control circuit terminals listed below and ground: Control circuit terminal 1

Control circuit terminal 2

If 25 Ω or less

1. Disconnect the X2 harness connector at the K36 inflatable restraint sensing and diagnostic module.

2. Test for infinite resistance between the control circuit and ground.

If less than infinite resistance, repair the short to ground on the circuit.

If infinite resistance, replace the K36 inflatable restraint sensing and diagnostic module.

If greater than 25 Ω

7. Ignition OFF. Install a 3 A fused jumper wire between the control circuit terminals 1 and 2. Ignition ON.

8. Verify the scan tool Deployment Loop Resistance parameter is less than 2 Ω.

If 2 Ω or greater

1. Ignition OFF. Disconnect the X2 harness connector at the K36 inflatable restraint sensing and diagnostic module.

2. Test for less than 2 Ω in each control circuit end to end.

If 2 Ω or greater, repair the open/high resistance in the circuit.

If less than 2 Ω, replace the K36 inflatable restraint sensing and diagnostic module.

If less than 2 Ω

9. Ignition OFF, connect the harness connector at the F105 Roof Rail Air Bag, press in the CPA (if equipped) until an audible and/or tactile click is heard.

10. Ignition ON, clear DTCs. Operate the vehicle within the Conditions for Running the DTC.

11. Verify DTC B0016 or B0023 is not set.

If DTC B0016 or B0023 is set

Test or replace the F105 Roof Rail Air Bag.

If DTC B0016 or B0023 is not set

12. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

Front and Rear Row Seat Roof Rail Airbag Replacement SIR/SRS Wiring Repairs

Control Module References for inflatable restraint sensing and diagnostic module replacement, programming and setup

DTC B0017 OR B0024: DRIVER/PASSENGER KNEE AIR BAG DEPLOYMENT LOOP

Diagnostic Instructions

Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Review Strategy Based Diagnosis for an overview of the diagnostic approach.

Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC B0017 01

Driver Knee Air Bag Deployment Loop Short to Battery

DTC B0017 02

Driver Knee Air Bag Deployment Loop Short to Ground

DTC B0017 04

Driver Knee Air Bag Deployment Loop Open

DTC B0017 0D

Driver Knee Air Bag Deployment Loop High Resistance

DTC B0017 0E

Driver Knee Air Bag Deployment Loop Low Resistance

DTC B0024 01

Passenger Knee Air Bag Deployment Loop Short to Battery

DTC B0024 02

Passenger Knee Air Bag Deployment Loop Short to Battery

DTC B0024 04

Passenger Knee Air Bag Deployment Loop Open

DTC B0024 0D

Passenger Knee Air Bag Deployment Loop High Resistance

DTC B0024 0E

Passenger Knee Air Bag Deployment Loop Low Resistance

Diagnostic Fault Information

Circuit	Short to Ground	High Resistance	Open	Short to Voltage	Signal Performance
Driver Knee Air Bag High Control	B0017 02, B0017 0E	B0017 0D	B0017 04, B0017 0D	B0017 01	-
Driver Knee Air Bag Low Control	B0017 02, B0017 0E	B0017 0D	B0017 04, B0017 0D	B0017 01	-
Passenger Knee Air Bag High Control	B0024 02, B0024 0E	B0024 0D	B0024 04, B0024 0D	B0024 01	-
Passenger Knee Air Bag Low Control	B0024 02, B0024 0E	B0024 0D	B0024 04, B0024 0D	B0024 01	-

Circuit/System Description

During a side or frontal crash of sufficient force the inflatable restraint sensing and diagnostic module (SDM) will allow current to flow through the deployment loop in order to deploy an air bag. There are 2 shorting bars used within the connector that will short together the control circuits, when the connector is disconnected. This will help to prevent unwanted deployment of the air bag or retractor pretensioner during servicing.

Conditions for Running the DTC Ignition voltage is between 9 - 16 V. Conditions for Setting the DTC B0017 01, B0024 01

The air bag control circuit is shorted to voltage for 2 seconds.

B0017 02, B0024 02

The air bag control circuit is shorted to ground for 2 seconds.

B0017 04, B0024 04

The air bag control circuit is open for 2 seconds.

B0017 0D, B0024 0D

The air bag deployment loop resistance is greater than 4.2 Ω for 2 seconds.

B0017 0E, B0024 0E

The air bag deployment loop resistance is less than 1.4 Ω for 2 seconds.

Action Taken When the DTC Sets

The Inflatable Restraint Sensing and Diagnostic Module requests the instrument cluster to illuminate the AIR BAG indicator.

The Inflatable Restraint Sensing and Diagnostic Module will store a DTC, however if an event occurs the

system will still attempt deployments.

Conditions for Clearing the DTC

The condition for setting the DTC no longer exists.

A history DTC will clear once 100 malfunction-free ignition cycles have occurred.

Diagnostic Aid

NOTE: The following diagnostic aids apply for both current and history DTCs.

Driver and passenger Knee Air Bags

Inline connectors - on the side of the harness connector

Harness side of the inflatable restraint sensing and diagnostic module connector

Terminal fretting or incorrectly seated connector can cause an open/high resistance condition. Check the circuit terminals for fretting or incorrectly seated connector if a DTC with symptom byte 04 or 0D is set. DTCs of deployment loops which are in the seat can occur because of stress or damage to the harness due to seat movement. Move the seat to the full extend of travel while using the scan tool to observe deployment type loop parameters.

Reference Information

Schematic Reference

SIR Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Supplemental Inflatable Restraint System Description and Operation

Electrical Information Reference

Circuit Testing

Testing for Intermittent Conditions and Poor Connections Wiring Repairs

Connector Repairs

Scan Tool Reference

Control Module References for scan tool information

Special Tools

EL-38125-580 Terminal Release Tool Kit

Circuit/System Verification

NOTE: Refer to SIR Service Precautions.

Inspect all terminals for damage or corrosion when disconnecting connectors. Damage or corrosion in the following requires repair or replacement of the affected component/connector.

Knee Air Bag

Inflatable Restraint Sensing and Diagnostic Module Knee Air Bag wiring harness connector

Inflatable Restraint Sensing and Diagnostic Module wiring harness connector

1. Verify the scan tool Deployment Loop Resistance parameters stay consistently between 2.1 and 4.0 Ω

without any spikes or dropouts while moving the harness near each connector listed below: F114D Knee Air Bag - Driver

F114P Knee Air Bag - Passenger Any inline harness

K36 Inflatable Restraint Sensing and Diagnostic Module

If less than 2.1 or greater than 4.0 Ω

Refer to Circuit/System Testing.

If there are spikes or dropouts, perform the following

Inspect each connector terminal and harness for damage or corrosion and repair as necessary Apply dielectric grease / lubricant (Nyogel 760G or equivalent, meeting GM specification

9986087) to each connector terminal

Insure each connector and CPA is correctly seated.

If within 2.1 and 4.0 Ω without any spikes or dropouts

2. All OK

Circuit/System Testing

1. Vehicle OFF, disconnect the scan tool, disconnect the appropriate F114 Knee Air Bag harness connector, and then wait for 120 seconds.

2. Test for greater than 25 Ω between the appropriate control circuit terminals 1 and 2.

If 25 Ω or less

1. Disconnect the X1 harness connector at the K36 Inflatable Restraint Sensing and Diagnostic Module.

2. Test for infinite resistance between the two control circuits.

If less than infinite resistance, repair the short between the two circuits.

If infinite resistance, replace the K36 Inflatable Restraint Sensing and Diagnostic Module.

If greater than 25 Ω

3. Vehicle in Service Mode.

4. Test for less than 11 V between the control circuit terminals listed below and ground: Control circuit terminal 1

Control circuit terminal 2

If 11 V or greater

1. Vehicle OFF, disconnect the X1 harness connector at the K36 Inflatable Restraint Sensing and Diagnostic Module, Vehicle in Service Mode.

2. Test for less than 1 V between each control circuit and ground. If 1 V or greater, repair the short to voltage on the circuit.

If less than 1 V, replace the K36 Inflatable Restraint Sensing and Diagnostic Module.

If less than 11 V

5. Vehicle OFF.

6. Test for greater than 25 Ω between the control circuit terminals listed below and ground: Control circuit terminal 1

Control circuit terminal 2

If 25 Ω or less

1. Disconnect the X1 harness connector at the K36 Inflatable Restraint Sensing and Diagnostic Module.

2. Test for infinite resistance between each control circuit and ground.

If less than infinite resistance, repair the short to ground on the circuit.

If infinite resistance, replace the K36 Inflatable Restraint Sensing and Diagnostic Module.

If greater than 25 Ω

7. Vehicle OFF, install a 3 A fused jumper wire between the control circuit terminals 1 and 2.

8. Verify the scan tool Deployment Loop Resistance parameter is less than 2 Ω.

If 2 Ω or greater

1. Vehicle OFF, disconnect the X1 harness connector at the K36 Inflatable Restraint Sensing and Diagnostic Module.

2. Test for less than 2 Ω in each control circuit end to end.

If 2 Ω or greater, repair the open/high resistance in the circuit.

If less than 2 Ω, replace the K36 Inflatable Restraint Sensing and Diagnostic Module.

If less than 2 Ω

9. Vehicle OFF, connect the harness connector at the F114 knee air bag, press in the CPA (if equipped) until an audible and/or tactile click is heard.

10. Vehicle in Service Mode, clear DTCs. Operate the vehicle within the Conditions for Running the DTC.

11. Verify DTC B0017 or B0024 is not set.

If DTC B0017 or B0024 is set

Replace the appropriate F114 Knee Air Bag.

If DTC B0017 or B0024 is not set

12. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

Instrument Panel Lower Airbag Replacement - Driver Side

Instrument Panel Lower Airbag Replacement - Passenger Side

Control Module References for inflatable restraint sensing and diagnostic module control module replacement, programming and setup

DTC B0019 OR B0020: PASSENGER INSTRUMENT PANEL AIR BAG DEPLOYMENT LOOP STAGE 1 AND 2

Diagnostic Instructions

Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Review Strategy Based Diagnosis for an overview of the diagnostic approach.

Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC B0019

Passenger Instrument Panel Air Bag Deployment Loop Stage 1

DTC B0020

Passenger Instrument Panel Air Bag Deployment Loop Stage 2 For symptom byte information refer to Symptom Byte List .

Diagnostic Fault Information

Circuit	Short to Ground	High Resistance	Open	Short to Voltage	Signal Performance
Passenger Instrument Panel Air Bag Stage 1 High Control	B0019 02, B0019 0E	B0019 0D	B0019 04, B0019 0D	B0019 01	-
Passenger Instrument Panel Air Bag Stage 1 Low Control	B0019 02, B0019 0E	B0019 0D	B0019 04, B0019 0D	B0019 01	-
Passenger Instrument Panel Air Bag Stage 2 High Control	B0020 02, B0020 0E	B0020 0D	B0020 04, B0020 0D	B0020 01	-
Passenger Instrument Panel Air Bag Stage 2 Low Control	B0020 02, B0020 0E	B0020 0D	B0020 04, B0020 0D	B0020 01	-

Circuit/System Description

During a side or frontal crash of sufficient force the inflatable restraint sensing and diagnostic module (SDM) will allow current to flow through the deployment loop in order to deploy an air bag or pretensioner. There are 2 shorting bars which will short the control circuits together when the connector is disconnected. This will help to prevent unwanted deployment of the air bag or pretensioner during servicing.

Conditions for Running the DTC Ignition voltage is between 9 - 16 V. Conditions for Setting the DTC B0019 01, B0020 01

The air bag control circuit is shorted to voltage for 2 s.

B0019 02, B0020 02

The air bag control circuit is shorted to ground for 2 s.

B0019 04, B0020 04

The air bag control circuit is open for 2 s.

B0019 0D, B0020 0D

The air bag deployment loop resistance is greater than 4.2 Ω for 2 s.

B0019 0E, B0020 0E

The air bag deployment loop resistance is less than 1.4 Ω for 2 s.

Action Taken When the DTC Sets

The inflatable restraint sensing and diagnostic module requests the instrument cluster to illuminate the AIR BAG indicator.

The inflatable restraint sensing and diagnostic module will store a DTC, however if an event occurs the system will still attempt deployments.

Conditions for Clearing the DTC

The condition for setting the DTC no longer exists.

A history DTC will clear once 100 malfunction-free ignition cycles have occurred.

Diagnostic Aid

NOTE: The following diagnostic aids apply for both current and history DTCs.

Passenger instrument panel air bag Inline harness connectors

Harness side of the inflatable restraint sensing and diagnostic module connector

Reference Information

Schematic Reference

SIR Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Supplemental Inflatable Restraint System Description and Operation

Electrical Information Reference

Circuit Testing

Testing for Intermittent Conditions and Poor Connections Wiring Repairs

Connector Repairs

Scan Tool Reference

Control Module References for scan tool information Special Tools

EL-38125-580 Terminal Release Tool Kit

Circuit/System Verification

NOTE: Refer to SIR Service Precautions.

Inspect all terminals for damage or corrosion when disconnecting connectors. Damage or corrosion in the following requires repair or replacement of the affected component/connector.

Passenger instrument panel air bag

inflatable restraint sensing and diagnostic module

Passenger instrument panel air bag wiring harness connector

inflatable restraint sensing and diagnostic module wiring harness connector

1. Verify the scan tool Deployment Loop Resistance parameters stay consistently between 2.1 - 4.0 Ω

without any spikes or dropouts while moving the harness near each connector listed below: F101 Passenger Instrument Panel Air Bag

Any inline harness connector

K36 Inflatable Restraint Sensing and Diagnostic Module

If less than 2.1 Ω or greater than 4.0 Ω

Refer to Circuit/System Testing.

If there are spikes or dropouts, perform the following

Inspect each connector terminal and harness for damage or corrosion and repair as necessary Apply dielectric grease / lubricant (Nyogel 760G or equivalent, meeting GM specification

9986087) to each connector terminal

Insure each connector and CPA is correctly seated.

If between 2.1 - 4.0 Ω without any spikes or dropouts

2. All OK.

Circuit/System Testing

1. Ignition OFF, scan tool disconnected, disconnect the X302 inline harness connector for the F101 Passenger Instrument Panel Air Bag. It may take up to 2 min for all vehicle systems to power down.

2. Test for greater than 25 Ω between the appropriate control circuit terminals listed below on the K36 Inflatable Restraint Sensing and Diagnostic Module side of the connector:

F101 Passenger Instrument Panel Air Bag stage 1 X302 terminal 1 and 2 F101 Passenger Instrument Panel Air Bag stage 2 X302 terminal 3 and 4 If 25 Ω or less

1. Disconnect the X1 harness connector at the K36 inflatable restraint sensing and diagnostic module.

2. Test for infinite resistance between the two control circuits.

If less than infinite resistance, repair the short between the two circuits.

If infinite resistance, replace the K36 Inflatable Restraint Sensing and Diagnostic Module.

If greater than 25 Ω

3. Ignition ON.

4. Test for less than 11 V between each control circuit terminal listed below on the instrument panel harness side of the connector and ground:

X302 control circuit terminal 1 X302 control circuit terminal 2 X302 control circuit terminal 3 X302 control circuit terminal 4 If 11 V or greater

1. Ignition OFF, disconnect the X1 harness connector at the K36 Inflatable Restraint Sensing and Diagnostic Module, ignition ON.

2. Test for less than 1 V between each control circuit and ground. If 1 V or greater, repair the short to voltage on the circuit.

If less than 1 V, replace the K36 Inflatable Restraint Sensing and Diagnostic Module.

If less than 11 V

5. Ignition OFF.

6. Test for greater than 25 Ω between each control circuit terminal listed below on the instrument panel harness side of the connector and ground:

X302 control circuit terminal 1

X302 control circuit terminal 2 X302 control circuit terminal 3 X302 control circuit terminal 4 If 25 Ω or less

1. Disconnect the X1 harness connector at the K36 Inflatable Restraint Sensing and Diagnostic Module.

2. Test for infinite resistance between the control circuit and ground.

If less than infinite resistance, repair the short to ground on the circuit.

If infinite resistance, replace the K36 Inflatable Restraint Sensing and Diagnostic Module.

If greater than 25 Ω

7. Install a 3 A fused jumper wire between the control circuit terminals listed below on the instrument panel harness side of the connector:

F101 Passenger Instrument Panel Air Bag stage 1 X302 terminal 1 and 2 F101 Passenger Instrument Panel Air Bag stage 2 X302 terminal 3 and 4

8. Ignition ON.

9. Verify the scan tool Deployment Loop Resistance parameter is less than 2 Ω.

If 2 Ω or greater

1. Ignition OFF, disconnect the X1 harness connector at the K36 Inflatable Restraint Sensing and Diagnostic Module.

2. Test for less than 2 Ω in each control circuit end to end.

If 2 Ω or greater, repair the open/high resistance in the circuit.

If less than 2 Ω, replace the K36 Inflatable Restraint Sensing and Diagnostic Module.

If less than 2 Ω

10. Ignition OFF, connect the X302 inline harness connector and disconnect the appropriate X1 (DTC B0019) or X2 (DTC B0020) harness connector at the F101 Passenger instrument panel air bag, ignition ON.

11. Test for less than 11 V between each control circuit terminals listed below and ground: F101 Passenger Instrument Panel Air Bag control circuit terminal 1 X1

F101 Passenger Instrument Panel Air Bag control circuit terminal 2 X1 F101 Passenger Instrument Panel Air Bag control circuit terminal 1 X2 F101 Passenger Instrument Panel Air Bag control circuit terminal 2 X2 If 11 V or greater

Repair the short to voltage on the circuit.

If less than 11 V

12. Ignition OFF.

13. Test for greater than 25 Ω between each control circuit terminals listed below and ground: F101 Passenger Instrument Panel Air Bag control circuit terminal 1 X1

F101 Passenger Instrument Panel Air Bag control circuit terminal 2 X1 F101 Passenger Instrument Panel Air Bag control circuit terminal 1 X2

F101 Passenger Instrument Panel Air Bag control circuit terminal 2 X2

If 25 Ω or less

Repair the short to ground on the circuit.

If greater than 25 Ω

14. Install a 3 A fused jumper wire between the control circuit terminals listed below:

F101 Passenger Instrument Panel Air Bag stage 1 control circuit terminal 1 X1 and 2 X1 F101 Passenger Instrument Panel Air Bag stage 2 control circuit terminal 1 X2 and 2 X2

15. Ignition ON.

16. Verify the scan tool Deployment Loop Resistance parameter is less than 2 Ω.

If 2 Ω or greater

1. Ignition OFF, disconnect the X1 harness connector at the K36 Inflatable Restraint Sensing and Diagnostic Module.

2. Test for less than 2 Ω in each control circuit end to end.

If 2 Ω or greater, repair the open/high resistance in the circuit between the F101 Passenger Instrument Panel Air Bag connector and the X302 inline harness connector.

If less than 2 Ω, replace the K36 Inflatable Restraint Sensing and Diagnostic Module.

If less than 2 Ω

17. Ignition OFF, connect the harness connector at the F101 Passenger Instrument Panel Air Bag, press in the CPA (if equipped) until an audible and/or tactile click is heard.

18. Ignition ON, clear DTCs. Operate the vehicle within the Conditions for Running the DTC.

19. Verify DTC B0019 or B0020 is not set.

If DTC B0019 or B0020 is set

Test or replace the F101 Passenger Instrument Panel Air Bag.

If DTC B0019 or B0020 is not set

20. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

Instrument Panel Airbag Replacement SIR/SRS Wiring Repairs

Control Module References for inflatable restraint sensing and diagnostic module control module replacement, programming and setup

DTC B0052: DEPLOYMENT COMMANDED CIRCUIT

Diagnostic Instructions

Perform the Diagnostic System Check - Vehicle prior to using the diagnostic procedure. Review Strategy Based Diagnosis for an overview of the diagnostic approach.

Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC B0052 00

Deployment Commanded

DTC B0052 56

Deployment Commanded Too Many Transitions

Circuit/System Description

The inflatable restraint sensing and diagnostic module (SDM) senses vehicle impacts and provides deployment signals to the air bags and anchor and/or retractor pretensioners when warranted. The inflatable restraint sensing and diagnostic module sets DTC B0052 after each command for deployment. DTC B0052 will latch and not clear after 3 commanded deployments by the inflatable restraint sensing and diagnostic module. Therefore the inflatable restraint sensing and diagnostic module has to be replaced.

Conditions for Running the DTC Ignition voltage is between 9 - 16 V. Conditions for Setting the DTC

The inflatable restraint sensing and diagnostic module detects a frontal impact of sufficient force to warrant deployment of the frontal air bags.

The inflatable restraint sensing and diagnostic module detects a side impact or rollover (if equipped) of sufficient force to warrant deployment of a seat air bag and/or roof rail air bag.

Action Taken When the DTC Sets

The inflatable restraint sensing and diagnostic module requests the instrument cluster to illuminate the AIR BAG indicator.

Conditions for Clearing the DTC

DTC B0052 00 is a DTC that may be cleared with a scan tool without replacing the inflatable restraint sensing and diagnostic module. This DTC will not clear if deployment has been commanded more then two times, and the inflatable restraint sensing and diagnostic module would have to be replaced.

DTC B0052 56 is a latched DTC. The DTC cannot be cleared with the scan tool. Replacement of the inflatable restraint sensing and diagnostic module is required.

Reference Information

Schematic Reference

SIR Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Supplemental Inflatable Restraint System Description and Operation

Electrical Information Reference

Circuit Testing

Testing for Intermittent Conditions and Poor Connections Wiring Repairs

Connector Repairs

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

1. Verify that DTC B0052 00 is not set.

If DTC B0052 00 is set

Clear the DTC. If the DTC will not clear, replace the K36 Inflatable Restraint Sensing and Diagnostic Module.

If DTC B0052 00 is not set

2. Verify that DTC B0052 56 is not set.

If DTC B0052 56 is set

Replace the K36 Inflatable Restraint Sensing and Diagnostic Module.

If DTC B0052 56 is not set

3. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

Control Module References for inflatable restraint sensing and diagnostic module replacement, programming and setup

DTC B0074: PASSENGER PRESENCE SENSOR

Diagnostic Instructions

Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Review Strategy Based Diagnosis for an overview of the diagnostic approach.

Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC B0074 00

Passenger Presence Sensor Circuit Malfunction

DTC B0074 0D

Passenger Presence Sensor Resistance Above Threshold

DTC B0074 0E

Passenger Presence Sensor Resistance Below Threshold

DTC B0074 0F

Passenger Presence Sensor Erratic (Wet Seat)

Circuit/System Description

The passenger presence module monitors the sensor status continually. Whenever the sensor mat has an internal malfunction, the passenger presence module will set DTC B0074.

Conditions for Running the DTC Ignition voltage is between 9 - 16 V. Conditions for Setting the DTC B0074 00

The passenger presence module has detected a disconnection from the sensor mat.

B0074 0D

The passenger presence module has detected a resistance above threshold.

B0074 0E

The passenger presence module has detected a resistance below threshold.

B0074 0F

The passenger presence module has detected a wet seat fault.

Action Taken When the DTC Sets

The inflatable restraint sensing and diagnostic module requests the instrument panel cluster to illuminate the AIR BAG indicator.

Conditions for Clearing the DTC

The condition for setting the DTC no longer exists.

A history DTC will clear once 100 malfunction-free ignition cycles have occurred.

Diagnostic Aids

If either the inflatable restraint sensing and diagnostic module or passenger presence module were replaced verify that the correct part numbers were used for the vehicle application.

If this DTC is set as either current or history it may have been caused by an electronic device. If an electronic device (computers, MP3 players, cell phones, diagnostic scan tool, power inverter, etc.) was placed on the passenger seat the passenger presence module may command the passenger air bag indicator to turn on and/or command the passenger seat belt indicator to turn on. Make sure there are no objects on the passenger seat and clear the DTCs. If this DTC resets then perform this diagnostic. If the DTC does not reset there is no further work needed on the passenger presence system.

If this DTC is set as either current or history it may have been caused by an aftermarket seat heater. The aftermarket seat heater may command the passenger air bag indicator to turn on and/or command the passenger seat belt indicator to turn on. Remove the aftermarket seat heater from the passenger seat and clear the DTCs. If this DTC resets then perform this diagnostic. If the DTC does not reset there is no further work needed on the passenger presence system.

Reference Information

Schematic Reference

SIR Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Supplemental Inflatable Restraint System Description and Operation

Electrical Information Reference

Circuit Testing

Testing for Intermittent Conditions and Poor Connections Connector Repairs

Wiring Repairs

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

NOTE: This system is serviced as a kit (seat foam, module and/or sensing mat). Perform a Passenger Presence System Preload whenever a component is replaced, refer to Passenger Presence System Programming and Setup . Inspect component connectors for damage or corrosion. Repair or replace the affected component/connector:

Passenger presence module

Passenger presence module harness connector

Seat wiring harness to vehicle harness connector

The connector and connector position assurance (CPA) may seat independent of each other. Both the connector and CPA should seat with an audible and/or tactile click.

1. Verify the DTC remains current while moving the passenger seat forward and backward through it's full range of motion.

If the DTC changes to History

If the status changes this could be indication of a seat to vehicle harness connection issue, refer to Circuit/System Testing.

If the DTC remains Current

2. Verify with the scan tool, the fault does not change status while moving the harness near each connector listed below.

K85 Passenger Presence Module B60 Passenger Presence Sensor Any seat harness inline

If the status changes

If the reading is erratic while moving the harness, perform the following:

Inspect each connector terminal for damage or corrosion and repair as necessary. Ensure each connector and CPA is correctly seated.

If the status does not change

3. All OK.

Circuit/System Testing

1. Confirm that all passenger presence system connectors are fully seated.

2. Verify that DTC B0074 0F is not set.

DTC B0074 0F is set.

NOTE: Verify there are no electronic devices on the passenger seat. If not, then verify the seat is dry by removing the trim from the seat bottom frame. If the seat is wet, allow 24-48 hours dry time with trim completely off. If the DTC is history, do not replace B60 Passenger Presence Sensor. Clear passenger presence module DTCs.

1. Verify there are no electronic devices on the passenger seat. Completely empty the passenger seat of any objects

If the seat is empty

2. Verify the seat is dry by removing the trim from the seat bottom frame.

If the seat is wet, allow 24-48 hours dry time with trim completely off. If the seat is dry

3. If the DTC is history, do not replace B60 Passenger Presence Sensor, and clear passenger presence module DTCs.

DTC B0074 0F does not set.

3. Verify DTC B0074 00, B0074 0D or B0074 0E is not set.

DTC B0074 00, B0074 0D or B0074 0E is set.

Replace the K85 Passenger Presence Module.

DTC B0074 00, B0074 0D or B0074 0E do not set.

4. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

Control Module References for passenger presence module replacement, programming and setup

DTC B0081: PASSENGER PRESENCE MODULE

Diagnostic Instructions

Perform the Diagnostic System Check - Vehicle prior to using the diagnostic procedure. Review Strategy Based Diagnosis for an overview of the diagnostic approach.

Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC B0081 00

Passenger Presence Module Erratic (sets in the Inflatable Restraint Sensing and Diagnostic Module)

DTC B0081 3A

Passenger Presence Module Incorrect Component Installed (sets in the Inflatable Restraint Sensing and Diagnostic Module)

DTC B0081 71

Passenger Presence Module Invalid Serial Data Received (sets in Inflatable Restraint Sensing and Diagnostic Module)

DTC B0081 11

Passenger Presence Module High Input (sets in the Passenger Presence Module)

DTC B0081 4B

Passenger Presence Module Calibration Not Learned (sets in the Passenger Presence Module)

DTC B0081 5A

Passenger Presence Module Plausibility Failure (sets in Passenger Presence Module)

Circuit/System Description

When the ignition is turned ON, the Passenger Presence Module and the Inflatable Restraint Sensing and Diagnostic Module performs tests to diagnose critical malfunctions. When the Inflatable Restraint Sensing and Diagnostic Module has completed the power-up mode, the Inflatable Restraint Sensing and Diagnostic Module will establish communication with the Passenger Presence Module. The Inflatable Restraint Sensing and Diagnostic Module will also request the instrument panel cluster (IPC) to illuminate both of the PASSENGER AIR BAG ON/OFF indicators ON for 5 seconds. If the Inflatable Restraint Sensing and Diagnostic Module determines the correct Passenger Presence Module is installed and functioning normally, the Inflatable Restraint Sensing and Diagnostic Module will illuminate the passenger air bags ON or OFF indicator based on messages from the Passenger Presence Module. The Inflatable Restraint Sensing and Diagnostic Module sends a message to the IPC to illuminate the appropriate PASSENGER AIR BAG ON/OFF indicator.

Conditions for Running the DTC Ignition voltage is between 9 - 16 V. Conditions for Setting the DTC

All of the following conditions must exist for 5 seconds:

B0081 00

The Inflatable Restraint Sensing and Diagnostic Module sets this DTC if there is a fault present in the Passenger Presence Module.

B0081 3A

The Inflatable Restraint Sensing and Diagnostic Module sets this DTC when the Inflatable Restraint Sensing and Diagnostic Module has received a message from the Passenger Presence Module which indicates a mismatch between the Inflatable Restraint Sensing and Diagnostic Module and Passenger Presence Module. There is either an incorrect Inflatable Restraint Sensing and Diagnostic Module or Passenger Presence Module installed on this vehicle.

B0081 71

The Inflatable Restraint Sensing and Diagnostic Module sets this DTC when the Inflatable Restraint Sensing and Diagnostic Module has received invalid serial data from the Passenger Presence Module.

B0081 11

The Passenger Presence Module sets this DTC when there is a high input to the Passenger Presence Module.

B0081 4B

The Passenger Presence Module sets this DTC when the Passenger Presence Module has not learned the calibrations.

B0081 5A

The Passenger Presence Module sets this code when the Passenger Presence Module has lost communications with the Inflatable Restraint Sensing and Diagnostic Module.

Action Taken When the DTC Sets

The Inflatable Restraint Sensing and Diagnostic Module disables the passenger instrument panel air bag. The Passenger Presence Module will illuminate the Passenger Airbag On/Off indicator status as OFF.

When the Passenger Presence Module sets this DTC, the Passenger Presence Module communicates with the Inflatable Restraint Sensing and Diagnostic Module to turn the AIRBAG indicator on.

When the Inflatable Restraint Sensing and Diagnostic Module sets this DTC, the Inflatable Restraint Sensing and Diagnostic Module will turn the AIRBAG indicator on.

The Inflatable Restraint Sensing and Diagnostic Module requests the instrument panel cluster (IPC) to illuminate the AIRBAG indicator.

Conditions for Clearing the DTC

The condition for setting the DTC no longer exists and there is no activity on the low speed serial data circuits.

A history DTC will clear once 100 malfunction-free ignition cycles have occurred.

Diagnostic Aids

If either the Inflatable Restraint Sensing and Diagnostic Module or Passenger Presence Module were replaced verify that the correct part numbers were used for the vehicle application.

If this DTC is set as either current or history it may have been caused by an electronic device. If an electronic device (Computers, MP3 Players, Cell Phones, Diagnostic Scan Tool, Power Inverter, etc.) was placed on the passenger seat the Passenger Presence Module may command the passenger air bag indicator to turn on and/or command the passenger seat belt indicator to turn on. Make sure there are no objects on the passenger seat and clear the DTCs. If this DTC resets then perform this diagnostic. If the DTC does not reset there is no further work needed on the passenger presence system.

Reference Information

Schematic Reference

SIR Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Supplemental Inflatable Restraint System Description and Operation

Electrical Information Reference

Circuit Testing

Connector Repairs

Testing for Intermittent Conditions and Poor Connections Wiring Repairs

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

NOTE: When removing connectors inspect for damage, corrosion or poor connection. Damage or corrosion in the following requires repair or replacement of the affected component/connector.

Passenger Presence Module

Inflatable Restraint Sensing and Diagnostic Module Passenger Presence Module harness connector

Inflatable Restraint Sensing and Diagnostic Module wiring harness connector

1. Vehicle in Service Mode.

Verify that DTC B0081 is the only DTC set in the K36 Inflatable Restraint Sensing and Diagnostic Module or K85 Passenger Presence Module.

If any other DTC is set

Diagnose the other DTCs first, refer to Diagnostic Trouble Code (DTC) List - Vehicle .

If B0081 is the only DTC set

NOTE: The K36 Inflatable Restraint Sensing and Diagnostic Module sets a redundant B0081 00 DTC when the K85 Passenger Presence Module sets a DTC B0081 11, B0081 4B, or B0081 71.

2. Verify DTC B0081 11 or DTC B0081 4B is not set in the K85 Passenger Presence Module.

If DTC B0081 11 or DTC B0081 4B is set in the K85 Passenger Presence Module

The correct calibration was not learned by the K85 Passenger Presence Module. Perform the Passenger Presence System Preload Test procedure. Refer to Passenger Presence System Programming and Setup .

If neither of these DTCs are set in the K85 Passenger Presence Module

3. Verify DTC B0081 5A is not set in the K85 Passenger Presence Module.

If DTC B0081 5A is set in the K85 Passenger Presence Module

1. Check the connections at the K36 Inflatable Restraint Sensing and Diagnostic Module and K85 Passenger Presence Module.

2. Clear the DTC's and check if DTC B0081 5A sets again in the K85 Passenger Presence Module. If DTC B0081 5A sets again replace the B60 Passenger Presence Sensor.

If DTC B0081 5A does not set

3. All OK.

If none of these DTCs set in the K85 Passenger Presence Module

4. Verify DTC B0081 3A is not set in the K36 Inflatable Restraint Sensing and Diagnostic Module.

If DTC B0081 3A is set in the K36 Inflatable Restraint Sensing and Diagnostic Module

1. Either an incorrect replacement K85 Passenger Presence Module or K36 Inflatable Restraint Sensing and Diagnostic Module was placed in this vehicle. Check and make sure the part numbers are correct for each module.

If either part number is incorrect replace it with the correct part number. If both part numbers are correct

2. Clear the DTC's and check if DTC B0081 3A sets again in the K36 Inflatable Restraint Sensing and Diagnostic Module.

If DTC B0081 3A sets again replace the B60 passenger presence sensor. If the DTC sets again replace the K36 Inflatable Restraint Sensing and Diagnostic Module.

If DTC B0081 3A does not set

3. All OK.

If DTC B0081 3A is not set in the K36 Inflatable Restraint Sensing and Diagnostic Module

5. Verify DTC B0081 71 is not set in the K36 Inflatable Restraint Sensing and Diagnostic Module.

If DTC B0081 71 is set in the K36 Inflatable Restraint Sensing and Diagnostic Module

1. Check the connections at the K36 Inflatable Restraint Sensing and Diagnostic Module and K85 Passenger Presence Module.

2. Clear the DTC's and check if DTC B0081 71 sets again in the K36 Inflatable Restraint Sensing and Diagnostic Module.

If DTC B0081 71 sets again replace the B60 passenger presence sensor. If DTC B0081 71 does not set

3. All OK.

If DTC B0081 71 does not set in the K36 Inflatable Restraint Sensing and Diagnostic Module

6. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

SIR/SRS Wiring Repairs

Control Module References for passenger presence system or Inflatable Restraint Sensing and Diagnostic Module replacement, programming and setup

DTC B0083 OR B0084: LEFT FRONT IMPACT SENSOR/RIGHT FRONT IMPACT SENSOR

Diagnostic Instructions

Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Review Strategy Based Diagnosis for an overview of the diagnostic approach.

Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC B0083

Left Front Impact Sensor

DTC B0084

Right Front Impact Sensor

For symptom byte information refer to Symptom Byte List

Diagnostic Fault Information

Circuit	Short to Ground	Open/High Resistance	Short to Voltage	Signal Performance
Left Front Impact Sensor High Signal	B0083 02	B0083 01, B0083 04,	B0083 05	B0083 3A
Left Front Impact Sensor Low Reference	B0083 02	B0083 01, B0083 04,	B0083 05	B0083 3A
Right Front Impact Sensor High Signal	B0084 02	B0083 01, B0083 04,	B0083 05	B0084 3A
Right Front Impact Sensor Low Reference	B0084 02	B0083 01, B0083 04,	B0083 05	B0084 3A

Circuit/System Description

The impact sensors are equipped on vehicles to supplement the Supplemental Inflatable Restraint (SIR) System performance. The impact sensors are electronic and are not part of the deployment loops, but instead provide inputs to the inflatable restraint sensing and diagnostic module. The impact sensors can assist in determining the severity of some frontal and side collisions. The inflatable restraint sensing and diagnostic module uses the input from the impact sensors to assist in determining the severity of a collision further supporting air bag deployment. If the inflatable restraint sensing and diagnostic module determines a deployment is warranted, the inflatable restraint sensing and diagnostic module will cause current to flow through the deployment loops deploying the air bags.

Conditions for Running the DTC Ignition voltage is between 9 - 16 V. Conditions for Setting the DTC

Any of the following conditions exist for 10 seconds:

B0083 01, B0084 01

The sensor circuit is open.

The sensor circuit has high resistance.

B0083 02, B0084 02

The sensor has been shorted to ground.

The sensor current is greater than 23 mA for greater than 5 milliseconds.

B0083 04, B0084 04,

The sensor circuit is open.

The inflatable restraint sensing and diagnostic module has not received a message from the sensor for greater than 375 milliseconds.

B0083 05, B0084 05

The sensor has been shorted to voltage. The sensor has High Voltage/Open.

B0083 39, B0084 39

The inflatable restraint sensing and diagnostic module has received a Not OK message from the sensor. The inflatable restraint sensing and diagnostic module has not received a message.

B0083 3A, B0084 3A

The inflatable restraint sensing and diagnostic module has received identification message from the sensor, which does not match the identification stored in the inflatable restraint sensing and diagnostic module memory.

The inflatable restraint sensing and diagnostic module has reset the impact sensor twice without detecting the correct identification message.

B0083 71, B0084 71

The inflatable restraint sensing and diagnostic module has received invalid serial data from the sensor.

Action Taken When the DTC Sets

The inflatable restraint sensing and diagnostic module requests the instrument panel cluster to illuminate the AIR BAG indicator.

Conditions for Clearing the DTC

The condition for setting the DTC no longer exists.

A history DTC will clear once 100 malfunction-free ignition cycles have occurred. An ignition cycle is required for the DTC to go from current to history.

Diagnostic Aid

NOTE: The following diagnostic aids apply for both current and history DTCs.

Terminal fretting, damaged terminals, damaged connectors, or incorrectly seated connectors can cause an open/high resistance condition. Check the circuit terminals for fretting or incorrectly seated connector if a DTC with symptom byte 05 is set.

Reference Information

Schematic Reference

SIR Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Supplemental Inflatable Restraint System Description and Operation

Electrical Information Reference

Circuit Testing

Testing for Intermittent Conditions and Poor Connections Connector Repairs

Wiring Repairs

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

NOTE: Refer to SIR Service Precautions.

Inspect all terminals for damage or corrosion when disconnecting connectors. Damage or corrosion in the following requires repair or replacement of the affected component/connector.

Impact sensor

Impact sensor wiring harness connector

Inflatable restraint sensing and diagnostic module

Inflatable restraint sensing and diagnostic module wiring harness

connector

1. Verify that DTC B0083 or B0084 symptom byte 39 or 71 is not set as current.

If DTC B0083 or B0084 symptom byte 39 or 71 is set as current

Replace the appropriate B59 Impact Sensor.

If DTC B0083 or B0084 symptom byte 39 or 71 is not set as current

2. Verify that the inflatable restraint sensing and diagnostic module calibrations match the VIN, software part number, and calibration part number.

If the inflatable restraint sensing and diagnostic module calibrations do not match the VIN data

Program the inflatable restraint sensing and diagnostic module.

If the inflatable restraint sensing and diagnostic module calibrations match the VIN data

3. Verify the B59 Front Impact Sensors have the correct part numbers, matching the label part numbers with the parts catalog.

If the inflatable restraint sensing and diagnostic module part numbers do not match

Replace the incorrect B59 Front Impact Sensor

If the inflatable restraint sensing and diagnostic module part numbers do match

4. Verify that DTC B0083 or B0084 symptom byte 01, 02, 04, or 05 is not set as current.

If DTC B0083 or B0084 symptom byte 01, 02, 04, or 05 is set as current

Refer to Circuit/System Testing.

If DTC B0083 or B0084 symptom byte 01, 02, 04, 05 is not set as current

5. All OK.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the appropriate B59 front impact sensor. It may take up to 2 min for all vehicle systems to power down.

2. Test for less than 10 Ω between the low reference circuit terminal 2 and ground.

If 10 Ω or greater

1. Ignition OFF, disconnect the X2 harness connector at the K36 inflatable restraint sensing and diagnostic module.

2. Test for less than 2 Ω in the low reference circuit end to end.

If 2 Ω or greater, repair the open/high resistance in the circuit.

If less than 2 Ω, replace the K36 inflatable restraint sensing and diagnostic module.

If less than 10 Ω

3. Test for greater than 50k Ω between the signal circuit terminal 1 and ground.

If 50k Ω or less

1. Disconnect the harness connector at the K36 Inflatable Restraint Sensing and Diagnostic Module.

2. Test for infinite resistance between the signal circuit and ground.

If less than infinite resistance, repair the short to ground on the circuit.

If infinite resistance, replace the K36 Inflatable Restraint Sensing and Diagnostic Module.

If greater than 50k Ω

4. Ignition ON, wait 1 min, test for less than 1 V between the signal circuit terminal 1 and ground.

If 1 V or greater

1. Ignition OFF, disconnect the harness connector at the K36 Inflatable Restraint Sensing and Diagnostic Module, ignition ON.

2. Test for less than 1 V between the signal circuit and ground.

If greater than 1 V, repair the short to voltage on the circuit.

If less than 1 V, replace the K36 Inflatable Restraint Sensing and Diagnostic Module.

If less than 1 V

NOTE: When using the MIN MAX function, autorange on the DMM may not function properly. To ensure accurate test results, turn off autorange and manually set the DMM range to 000.0 V.

5. Ignition OFF, install a DMM between the signal circuit terminal 1 and ground. Set the DMM to capture DC voltage using the MIN MAX function. Turn off autorange and manually set the DMM range to 000.0

V. Ignition ON.

6. Verify the MAX voltage captured by the DMM is between 4 - 9V.

If less than 4 V

1. Disconnect the X2 harness connector at the K36 Inflatable Restraint Sensing and Diagnostic Module.

2. Test for infinite resistance between the signal circuit and ground.

If less than infinite resistance, repair the short to ground on the circuit. If infinite resistance

3. Test for less than 2 Ω in the signal circuit end to end.

If 2 Ω or greater, repair the open/high resistance in the circuit.

If less than 2 Ω, replace the Inflatable Restraint Sensing and Diagnostic Module.

If greater than 9V

1. Ignition OFF. Disconnect the X2 harness connector at the K36 Inflatable Restraint Sensing and Diagnostic Module. Ignition ON.

2. Test for less than 1 V between the signal circuit terminal 1 and ground. If 1 V or greater, repair the short to voltage on the circuit.

If less than 1 V, replace the K36 Inflatable Restraint Sensing and Diagnostic Module.

If between 4 - 9V

7. Ignition OFF, reconnect all harness connectors, press in the CPA (if equipped) until an audible and/or tactile click is heard.

8. Ignition ON, clear DTCs. Operate the vehicle within the Conditions for Running the DTC.

9. Operate the vehicle under the conditions for setting the DTC. The DTC should not set.

If the DTC sets

Replace the B59 Impact Sensor.

If the DTC does not set

10. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

Airbag Front End Discriminating Sensor Replacement - Right Side Airbag Front End Discriminating Sensor Replacement - Left Side

Control Module References for inflatable restraint sensing and diagnostic module replacement, programming and setup

DTC B0085 OR B0088: LEFT FRONT SIDE IMPACT SENSOR/RIGHT REAR SIDE IMPACT SENSOR

Diagnostic Instructions

Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Review Strategy Based Diagnosis for an overview of the diagnostic approach.

Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC B0085 02

Left Front Side Impact Sensor Short to Ground

DTC B0085 05

Left Front Side Impact Sensor High Voltage/Open

DTC B0085 39

Left Front Side Impact Sensor Internal Malfunction

DTC B0085 3A

Left Front Side Impact Sensor Incorrect Component Installed

DTC B0085 71

Left Front Side Impact Sensor Invalid Data

DTC B0088 02

Right Rear Side Impact Sensor Short to Ground

DTC B0088 05

Right Rear Side Impact Sensor High Voltage/Open

DTC B0088 39

Right Rear Side Impact Sensor Internal Malfunction

DTC B0088 3A

Right Rear Side Impact Sensor Incorrect Component Installed

DTC B0088 71

Right Rear Side Impact Sensor Invalid Data

Diagnostic Fault Information

Circuit	Short to Ground	Open/High Resistance	Short to Voltage	Signal Performance
Left Front Side Impact Sensor High Signal	B0085 02, B0088 02	B0085 05	B0085 05, B0088 05	B0085 39
Left Front Side Impact Sensor Low Reference	B0085 02, B0088 02	B0085 05	B0085 05, B0088 05	B0085 39
Right Rear Side Impact Sensor High Signal	B0085 02, B0088 02	B0088 05	B0085 05, B0088 05	B0088 39
Right Rear Side Impact Sensor Low Reference	B0085 02, B0088 02	B0088 05	B0085 05, B0088 05	B0088 39

Circuit/System Description

The impact sensors are equipped on vehicles to supplement the supplemental inflatable restraint (SIR) system performance. The impact sensors are electronic and are not part of the deployment loops, but instead provide inputs to the sensing and diagnostic module (SDM). The impact sensors can assist in determining the severity of some frontal and side collisions. The SDM uses the input from the impact sensors to assist in determining the severity of a collision further supporting air bag deployment. If the SDM determines a deployment is warranted, the SDM will cause current to flow through the deployment loops deploying the air bags.

Conditions for Running the DTC

Ignition voltage is between 9 - 16 V.

Conditions for Setting the DTC

Any of the following conditions exist for 10 seconds:

B0085 02, B0088 02

The sensor has been shorted to ground.

The sensor current is greater than 23 mA for greater than 5 milliseconds.

B0085 05, B0088 05

The sensor circuit is open.

The inflatable restraint sensing and diagnostic module has not received a message from the sensor for greater than 375 milliseconds.

B0085 39, B0088 39

The inflatable restraint sensing and diagnostic module has received a Not OK message from the sensor. The inflatable restraint sensing and diagnostic module has not received a message.

B0085 3A, B0088 3A

The inflatable restraint sensing and diagnostic module has reset the impact sensor twice without detecting the correct identification message.

B0085 71, B0088 71

The inflatable restraint sensing and diagnostic module has received invalid serial data from the sensor.

Action Taken When the DTC Sets

The inflatable restraint sensing and diagnostic module requests the instrument panel cluster to illuminate the AIR BAG indicator.

Conditions for Clearing the DTC

The condition for setting the DTC no longer exists.

A history DTC will clear once 100 malfunction-free ignition cycles have occurred. An ignition cycle is required for the DTC to go from current to history.

Reference Information

Schematic Reference

SIR Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Supplemental Inflatable Restraint System Description and Operation

Electrical Information Reference

Circuit Testing

Testing for Intermittent Conditions and Poor Connections Connector Repairs

Wiring Repairs

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

NOTE: Refer to SIR Service Precautions.

Inspect all terminals for damage or corrosion when disconnecting connectors. Damage or corrosion in the following requires repair or replacement of the affected component/connector.

Side impact sensor

Inflatable restraint sensing and diagnostic module Front impact sensor wiring harness connector

Side impact sensor wiring harness connector

Inflatable restraint sensing and diagnostic module wiring harness connector

1. Verify that DTC B0085 or B0088 symptom byte 3A, 39 or 71 is not set as current.

If DTC B0085 or B0088 symptom byte 3A, 39 or 71 is set as current

Replace the appropriate B63 side impact sensor

If DTC B0085 or B0088 symptom byte 3A, 39 or 71 is not set as current

2. Verify that DTC B0085 or B0088 symptom byte 02 or 05 is set as current.

If only DTC B0085 symptom byte 02 or 05 is set as current

Refer to Circuit/System Testing - Only DTC B0085 or B0088 is set.

If only DTC B0088 symptom byte 02 or 05 is set as current

Refer to Circuit/System Testing - Only DTC B0085 or B0088 is set.

If both DTC B0085 or B0088 symptom byte 02 or 05 is set as current

Refer to Circuit/System Testing - Both DTC B0085 and B0088 are set.

If DTC B0085 or B0088 symptom byte 02 or 05 is not set as current

3. All OK.

Circuit/System Testing

NOTE: The signal circuit is shared at the K36 inflatable restraint sensing and diagnostic module between the B63LF side impact sensor left front and the B63RR side impact sensor right rear (DTC B0085 and DTC B0088). Therefore a short to ground or short to voltage in either of these signal circuits can set a DTC for both circuits, and an open in either circuit should only set its corresponding DTC.

Only DTC B0085 or B0088 is set

1. Vehicle OFF, disconnect the harness connector at the appropriate B63 side impact sensor. It may take up to 2 minutes for all vehicle systems to power down.

2. Test for less than 10 Ω between the low reference circuit terminal 2 and ground.

If 10 Ω or greater

1. Disconnect the X2 harness connector at the K36 inflatable restraint sensing and diagnostic module.

2. Test for less than 2 Ω in the low reference circuit end to end.

If 2 Ω or greater, repair the open/high resistance in the circuit.

If less than 2 Ω, replace the K36 inflatable restraint sensing and diagnostic module.

If less than 10 Ω

3. Disconnect the X2 harness connector at the K36 inflatable restraint sensing and diagnostic module.

4. Test for less than 2 Ω between the signal circuit terminal 1 at the B63 side impact sensor and the K36 inflatable restraint sensing and diagnostic module terminal listed below:

Left front signal terminal 19 X2 Right rear signal terminal 30 X2 If 2 Ω or greater

Repair the open/high resistance in the circuit.

If less than 2 Ω

5. Vehicle OFF, reconnect all harness connectors, press in the CPA (if equipped) until an audible and/or tactile click is heard.

6. Vehicle in Service Mode, clear DTCs. Operate the vehicle within the Conditions for Running the DTC.

7. Verify DTC B0085 or B0088 is not set.

If DTC B0085 or B0088 is set

Replace the appropriate B63 side impact sensor.

If DTC B0085 or B0088 is not set

8. All OK.

Both DTC B0085 and B0088 are set

1. Vehicle OFF. Disconnect the X2 harness connector at the K36 inflatable restraint sensing and diagnostic module. It may take up to 2 minutes for all vehicle systems to power down.

2. Test for less than 1 V between the signal circuit terminals listed below and ground: Left front signal circuit - terminal 19 X2

Right rear signal circuit - terminal 30 X2

If 1 V or greater

1. Disconnect the harness connector at the B63 side impact sensor that failed the test.

2. Test for less than 1 V between signal circuit and ground.

If 1 V or greater, repair the short to voltage in the circuit. If less than 1 V, replace the B63 side impact sensor.

If less than 1 V

3. Test for greater than 50k Ω between each signal circuit listed below and ground: Left front signal circuit - terminal 19 X2

Right rear signal circuit - terminal 30 X2

If 50k Ω or less

1. Disconnect the harness connector at the B63 side impact sensor that failed the test.

2. Test for infinite resistance between the signal circuit and ground.

If less than infinite resistance, repair the short to ground on the circuit. If infinite resistance, replace the B63 side impact sensor.

If greater than 50k Ω

4. Replace the K36 inflatable restraint sensing and diagnostic module.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

Airbag Side Impact Sensor Replacement

Control Module References for inflatable restraint sensing and diagnostic module replacement, programming and setup

DTC B0086 OR B0087: RIGHT FRONT/ LEFT REAR SIDE IMPACT SENSOR

Diagnostic Instructions

Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Review Strategy Based Diagnosis for an overview of the diagnostic approach.

Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC B0086 02

Right Front Side Impact Sensor Short to Ground

DTC B0086 05

Right Front Side Impact Sensor High Voltage/Open

DTC B0086 39

Right Front Side Impact Sensor Internal Malfunction

DTC B0086 3A

Right Front Side Impact Sensor Incorrect Component Installed

DTC B0086 71

Right Front Side Impact Sensor Invalid Data

DTC B0087 02

Left Rear Side Impact Sensor Short to Ground

DTC B0087 05

Left Rear Side Impact Sensor High Voltage/Open

DTC B0087 39

Left Rear Side Impact Sensor Internal Malfunction

DTC B0087 3A

Left Rear Side Impact Sensor Incorrect Component Installed

DTC B0087 71

Left Rear Side Impact Sensor Invalid Data

Diagnostic Fault Information

Circuit	Short to Ground	Open/High Resistance	Short to Voltage	Signal Performance
Right Front Side Impact Sensor High Signal	B0086 02, B0087 02	B0086 05	B0086 05, B0087 05	B0086 39
Right Front Side Impact Sensor Low Reference	B0086 02, B0087 02	B0086 05	B0086 05, B0087 05	B0086 39
Left Rear Side Impact Sensor High Signal	B0086 02, B0087 02	B0087 05	B0086 05, B0087 05	B0087 39
Left Rear Side Impact Sensor Low Reference	B0086 02, B0087 02	B0087 05	B0086 05, B0087 05	B0087 39

Circuit/System Description

Conditions for Running the DTC Ignition voltage is between 9 - 16 V. Conditions for Setting the DTC

Any of the following conditions exist for 10 seconds:

B0086 02, B0087 02

The sensor has been shorted to ground.

The sensor current is greater than 23 mA for greater than 5 milliseconds.

B0086 05, B0087 05

The sensor circuit is open.

The inflatable restraint sensing and diagnostic module has not received a message from the sensor for greater than 375 milliseconds.

B0086 39, B0087 39

The inflatable restraint sensing and diagnostic module has received a Not OK message from the sensor. The inflatable restraint sensing and diagnostic module has not received a message.

B0086 3A, B0087 3A

The inflatable restraint sensing and diagnostic module has reset the impact sensor twice without detecting the correct identification message.

B0086 71, B0087 71

The inflatable restraint sensing and diagnostic module has received invalid serial data from the sensor.

Action Taken When the DTC Sets

The inflatable restraint sensing and diagnostic module requests the instrument panel cluster to illuminate the AIR BAG indicator.

Conditions for Clearing the DTC

The condition for setting the DTC no longer exists.

A history DTC will clear once 100 malfunction-free ignition cycles have occurred. An ignition cycle is required for the DTC to go from current to history.

Reference Information

Schematic Reference

SIR Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Supplemental Inflatable Restraint System Description and Operation

Electrical Information Reference

Circuit Testing

Testing for Intermittent Conditions and Poor Connections Connector Repairs

Wiring Repairs

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

NOTE: Refer to SIR Service Precautions.

Inspect all terminals for damage or corrosion when disconnecting connectors. Damage or corrosion in the following requires repair or replacement of the affected component/connector.

Side impact sensor

Inflatable restraint sensing and diagnostic module Front impact sensor wiring harness connector

Side impact sensor wiring harness connector

Inflatable restraint sensing and diagnostic module wiring harness connector

1. Verify that DTC B0086 or B0087 symptom byte 3A, 39 or 71 is not set as current.

If DTC B0086 or B0087 symptom byte 3A, 39 or 71 is set as current

Replace the appropriate B63 side impact sensor

If DTC B0086 or B0087 symptom byte 3A, 39 or 71 is not set as current

2. Verify that DTC B0086 or B0087 symptom byte 02 or 05 is set as current.

If only DTC B0086 symptom byte 02 or 05 is set as current

Refer to Circuit/System Testing - Only DTC B0086 or B0087 is set.

If only DTC B0087 symptom byte 02 or 05 is set as current

Refer to Circuit/System Testing - Only DTC B0086 or B0087 is set.

If both DTC B0086 or B0087 symptom byte 02 or 05 is set as current

Refer to Circuit/System Testing - Both DTC B0086 and B0087 are set.

If DTC B0086 or B0087 symptom byte 02 or 05 is not set as current

3. All OK.

Circuit/System Testing

NOTE: The signal circuit is shared at the K36 inflatable restraint sensing and diagnostic module between the B63RF side impact sensor right front and the B63LR side impact sensor left rear (DTC B0086 and DTC B0087). Therefore a short to ground or short to voltage in either of these signal circuits can set a DTC for both circuits, and an open in either circuit should only set its corresponding DTC.

Only DTC B0086 or B0087 is set

1. Vehicle OFF, disconnect the harness connector at the appropriate B63 side impact sensor. It may take up to 2 minutes for all vehicle systems to power down.

2. Test for less than 10 Ω between the low reference circuit terminal 2 and ground.

If 10 Ω or greater

1. Disconnect the X2 harness connector at the K36 inflatable restraint sensing and diagnostic module.

2. Test for less than 2 Ω in the low reference circuit end to end.

If 2 Ω or greater, repair the open/high resistance in the circuit.

If less than 2 Ω, replace the K36 inflatable restraint sensing and diagnostic module.

If less than 10 Ω

3. Disconnect the X2 harness connector at the K36 inflatable restraint sensing and diagnostic module.

4. Test for less than 2 Ω between the signal circuit terminal 1 at the B63 side impact sensor and the K36 inflatable restraint sensing and diagnostic module terminal listed below:

Right front signal terminal 22 X2 Left rear signal terminal 27 X2

If 2 Ω or greater

Repair the open/high resistance in the circuit.

If less than 2 Ω

5. Vehicle OFF, reconnect all harness connectors, press in the CPA (if equipped) until an audible and/or tactile click is heard.

6. Vehicle in Service Mode, clear DTCs. Operate the vehicle within the Conditions for Running the DTC.

7. Verify DTC B0086 or B0087 is not set.

If DTC B0086 or B0087 is set

Replace the appropriate B63 side impact sensor.

If DTC B0086 or B0087 is not set

8. All OK.

Both DTC B0086 and B0087 are set

1. Vehicle OFF. Disconnect the X2 harness connector at the K36 inflatable restraint sensing and diagnostic module. It may take up to 2 minutes for all vehicle systems to power down.

2. Test for greater than 50k Ω between each signal circuit listed below and ground: Right front signal circuit - terminal 22 X2

Left rear signal circuit - terminal 27 X2

If 50k Ω or less

1. Disconnect the harness connector at the B63 side impact sensor that failed the test.

2. Test for infinite resistance between the signal circuit and ground.

If less than infinite resistance, repair the short to ground on the circuit. If infinite resistance, replace the B63 side impact sensor.

If greater than 50k Ω

3. Test for less than 1 V between the signal circuit terminals listed below and ground: Right front signal circuit - terminal 22 X2

Left rear signal circuit - terminal 27 X2

If 1 V or greater

1. Disconnect the harness connector at the B63 side impact sensor that failed the test.

2. Test for less than 1 V between signal circuit and ground.

If 1 V or greater, repair the short to voltage in the circuit. If less than 1 V, replace the B63 side impact sensor.

If less than 1 V

4. Replace the K36 inflatable restraint sensing and diagnostic module.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

Airbag Side Impact Sensor Replacement

Control Module References for inflatable restraint sensing and diagnostic module replacement, programming and setup

DTC B067F OR B0680: PASSENGER AIR BAG ON INDICATOR

Diagnostic Instructions

Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Review Strategy Based Diagnosis for an overview of the diagnostic approach.

Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC B067F 01

Passenger Air Bag On Indicator Circuit Short to Battery

DTC B067F 02

Passenger Air Bag On Indicator Circuit Short to Ground

DTC B067F 04

Passenger Air Bag On Indicator Circuit Open

DTC B0680 01

Passenger Air Bag Off Indicator Circuit Short to Battery

DTC B0680 02

Passenger Air Bag Off Indicator Circuit Short to Ground

DTC B0680 04

Passenger Air Bag Off Indicator Circuit Open

Diagnostic Fault Information

Circuit	Short to Ground	Open/High Resistance	Short to Voltage	Signal Performance
Passenger Air Bag OFF Indicator Control	B0680 02	B0680 04	B0680 01	-
Passenger Air Bag ON Indicator Control	B067F 02	B067F 04	B067F 01	-
Passenger Air Bag Disable Indicator Ground	-	B067F 04, B0680 04	-	-

Circuit/System Description

The passenger air bag ON/OFF indicators are used to notify the driver when the passenger presence system has enabled or disabled the passenger instrument panel air bag. When the ignition is turned ON, the ignition voltage is supplied to the passenger presence module. When the inflatable restraint sensing and diagnostic module (SDM) receives the appropriate serial data message from the passenger presence module the SDM will then provide voltage to the appropriate indicator.

Conditions for Running the DTC Ignition Voltage is between 9 - 16 V Conditions for Setting the DTC

The SDM detects improper voltage on the control circuit of the passenger air bag ON or OFF indicator

Actions Taken When the DTC Sets

The inflatable restraint sensing and diagnostic module requests the instrument cluster to illuminate the AIR BAG indicator.

Passenger air bag ON and OFF indicators are disabled.

Conditions for Clearing the DTC

The condition for setting the DTC no longer exists.

Reference Information

Schematic Reference

SIR Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Supplemental Inflatable Restraint System Description and Operation

Electrical Information Reference

Circuit Testing

Connector Repairs

Testing for Intermittent Conditions and Poor Connections Wiring Repairs

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

NOTE: The passenger air bag ON and OFF indicators may not operate as expected if there are supplemental inflatable restraint (SIR) DTCs. Repair all SIR DTCs before proceeding with this diagnostic.

1. Ignition ON.

2. With a scan tool command the passenger air bag ON indicator and passenger air bag OFF indicator ON and OFF. The respective indicators should turn ON and OFF as commanded.

3. Verify the passenger air bag ON indicator and passenger air bag OFF indicators turn ON and OFF when commanded ON and OFF with a scan tool.

If the passenger air bag indicators do not change

Refer to Circuit/System Testing

If the passenger air bag indicators change

4. All OK.

Circuit/System Testing

NOTE: When removing connectors inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of the affected.

Passenger air bag disable on/off indicator.

Passenger air bag disable on/off indicator wiring harness.

1. Ignition OFF, disconnect the harness connector at the S48B Multifunction Switch - Instrument Panel.

2. Test for less than 10 Ω between the ground circuit terminal 5 and ground.

If 10 Ω or greater

Repair the open/high resistance in the circuit.

If less than 10 Ω

3. Ignition ON, with a scan tool, command the passenger air bag OFF indictor OFF.

4. Test for less than 11 V between the control circuit terminal 11 and ground.

If 11 V or greater

1. Ignition OFF, disconnect the X1 harness connector at the K36 Inflatable Restraint Sensing and Diagnostic Module. Ignition ON.

2. Test for less than 1 V between the control circuit and ground.

If 1 V or greater, repair the short to voltage on the circuit.

If less than 1 V, replace the K36 Inflatable Restraint Sensing and Diagnostic Module.

If less than 11 V

5. With a scan tool, command the passenger air bag OFF indicator ON.

6. Test for greater than 4 V between the control circuit terminal 11 and ground.

If 4 V or less

1. Ignition OF, disconnect the X1 harness connector at the K36 Inflatable Restraint Sensing and Diagnostic Module.

2. Test for infinite resistance between the control circuit and ground.

If less than infinite resistance, repair the short to ground on the circuit.

3. Test for less than 2 Ω in each control circuit end to end.

If 2 Ω or greater, repair the open/high resistance in the circuit.

If less than 2 Ω, replace the K36 Inflatable Restraint Sensing and Diagnostic Module.

If greater than 4 V

7. With a scan tool, command the passenger air bag ON indicator OFF.

8. Test for less than 11 V between the control circuit terminal 12 and ground.

If 11 V or greater

1. Ignition OFF, disconnect the X1 harness connector at the K36 Inflatable Restraint Sensing and Diagnostic Module. Ignition ON.

2. Test for less than 1 V between the control circuit and ground.

If 1 V or greater, repair the short to voltage on the circuit.

If less than 1 V, replace the K36 Inflatable Restraint Sensing and Diagnostic Module.

If less than 11 V

9. With a scan tool, command the passenger air bag ON indicator ON.

10. Test for greater than 4 V between the control circuit terminal 12 and ground.

If 4 V or less

1. Ignition OFF, disconnect the X1 harness connector at the K36 Inflatable Restraint Sensing and Diagnostic Module.

2. Test for infinite resistance between the control circuit and ground.

If less than infinite resistance, repair the short to ground on the circuit.

3. Test for less than 2 Ω in each control circuit end to end.

If 2 Ω or greater, repair the open/high resistance in the circuit.

If less than 2 Ω, replace the K36 Inflatable Restraint Sensing and Diagnostic Module.

If greater than 4 V

11. Replace the S48B Multifunction Switch - Instrument Panel.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

Roof Console Replacement

Control Module References for inflatable restraint sensing and diagnostic module replacement, programming and setup

DTC B1001: OPTION CONFIGURATION (INFLATABLE RESTRAINT SENSING AND DIAGNOSTIC MODULE)

Diagnostic Instructions

Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Review Strategy Based Diagnosis for an overview of the diagnostic approach.

Diagnostic Procedure Instructions provides an overview of each diagnostic category

DTC Descriptor

DTC B1001 00

Option Configuration

Circuit/System Description

The inflatable restraint sensing and diagnostic module stores a primary data key, which is a 4-digit number. When the ignition is turned ON, the inflatable restraint sensing and diagnostic module compares this information to the information stored in the body control module (BCM) via serial data. If there is a mismatch between the information stored in the inflatable restraint sensing and diagnostic module and body control module, DTC B1001 will set.

Conditions for Running the DTC System voltage is between 9 - 16 V. Conditions for Setting the DTC

The 4-digit Primary Data Key stored in the inflatable restraint sensing and diagnostic module does not match the 4 digits stored in the body control module.

Action Taken When the DTC Sets

The inflatable restraint sensing and diagnostic module requests the instrument cluster to illuminate the AIR BAG indicator.

The inflatable restraint sensing and diagnostic module disables all deployments.

Conditions for Clearing the DTC

The last 4-digit Primary Data Key in the inflatable restraint sensing and diagnostic module matches the last 4 digits stored in the Body Control Module.

Diagnostic Aids

This DTC is an indication that an incorrect inflatable restraint sensing and diagnostic module is installed in the vehicle, or that the inflatable restraint sensing and diagnostic module and/or the body control module was replaced without reprogramming the body control module with the new information.

If the inflatable restraint sensing and diagnostic module was previously programmed and DTC B1001 is now set, the setup portion of program was not completed. Proceed to the inflatable restraint sensing and diagnostic module setup portion of the Inflatable Restraint Sensing and Diagnostic Module Programming and Setup

Reference Information

Schematic Reference

SIR Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Supplemental Inflatable Restraint System Description and Operation

Electrical Information Reference

Circuit Testing

Testing for Intermittent Conditions and Poor Connections Wiring Repairs

Connector Repairs

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

1. Verify the scan tool K36 Inflatable Restraint Sensing and Diagnostic Module Primary Key Status paramater is Valid.

If the K36 Inflatable Restraint Sensing and Diagnostic Module Primary Key Status parameter is Invalid

Perform the K36 Inflatable Restraint Sensing and Diagnostic Module setup. Refer to Inflatable Restraint Sensing and Diagnostic Module Programming and Setup .

If the K36 Inflatable Restraint Sensing and Diagnostic Module Primary Key Status parameter is Valid

2. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

SIR/SRS Wiring Repairs

Control Module References for inflatable restraint sensing and diagnostic module replacement, programming and setup

DTC B1001: OPTION CONFIGURATION ERROR (PASSENGER PRESENCE SYSTEM)

Diagnostic Instructions

Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Review Strategy Based Diagnosis for an overview of the diagnostic approach.

Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

DTC B1001 00

Option Configuration Error

Circuit/System Description

The Inflatable Restraint Sensing and Diagnostic Module (SDM) stores a 4-digit primary key for the Passenger Presence Module. The Inflatable Restraint Sensing and Diagnostic Module sends the Passenger Presence Module the primary key. If the Passenger Presence Module determines that it is the wrong primary key, the Passenger Presence Module will set DTC B1001 and send the Inflatable Restraint Sensing and Diagnostic Module a vehicle mismatch message. The Inflatable Restraint Sensing and Diagnostic Module then will set DTC B0081 and illuminate the SIR warning indicator. The Passenger Presence Module does not use a secondary key.

Conditions for Running the DTC

Ignition voltage is between 9 - 16 volts.

Conditions for Setting the DTC

The 4-digit primary key stored in the Inflatable Restraint Sensing and Diagnostic Module does not match the 4-digit key stored in the Passenger Presence Module.

Action Taken When the DTC Sets

The Inflatable Restraint Sensing and Diagnostic Module requests the instrument panel cluster to illuminate the AIR BAG indicator.

The passenger instrument panel air bag deployment is disabled.

Conditions for Clearing the DTC

The 4-digit Primary Key in the Inflatable Restraint Sensing and Diagnostic Module and in the Passenger

Presence Module match.

Diagnostic Aids

This DTC is an indication that the passenger presence system module was not set-up correctly, is not the correct part number or that the Passenger Presence Module is defective.

Reference Information

Schematic Reference

SIR Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Supplemental Inflatable Restraint System Description and Operation

Electrical Information Reference

Circuit Testing

Connector Repairs

Testing for Intermittent Conditions and Poor Connections Wiring Repairs

SIR/SRS Wiring Repairs

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

NOTE: When removing connectors inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of the affected.

Passenger Presence Module

Passenger Presence Module wiring harness

1. Verify the correct K85 Passenger Presence Module part number has been installed

If the K85 Passenger Presence Module installed has an incorrect part number

Replace the K85 Passenger Presence Module.

If the K85 Passenger Presence Module installed has a correct part number

2. Verify that DTC B1001 is not set as current in the K85 Passenger Presence Module.

If DTC is set as current. If Inflatable Restraint Sensing and Diagnostic Module part number

is correct

1. Verify the Inflatable Restraint Sensing and Diagnostic Module part number is correct.

If the K36 Inflatable Restraint Sensing and Diagnostic Module part number is incorrect, replace the K36 Inflatable Restraint Sensing and Diagnostic Module

If the K36 Inflatable Restraint Sensing and Diagnostic Module part number is correct

2. Replace the K85 Passenger Presence Module

If the DTC is no set as current

3. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for K85 Passenger Presence Module and K36 Inflatable Restraint Sensing and Diagnostic Module replacement, setup, and programming

DTC B1019: SYSTEM CONFIGURATION ERROR

Diagnostic Instructions

Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Review Strategy Based Diagnosis for an overview of the diagnostic approach.

Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

DTC B1019 00

System Configuration Error

Circuit/System Description

The inflatable restraint sensing and diagnostic module (SDM) monitors the number of safety components installed on the vehicle. When the Vehicle is turned ON, the Inflatable Restraint Sensing and Diagnostic Module evaluates the number of safety components installed and compares it to the number of components the Inflatable Restraint Sensing and Diagnostic Module expects to see on the vehicle with its current calibration. If there is a mismatch between detected components and the components programmed with the Inflatable Restraint Sensing and Diagnostic Module calibration, DTC B1019 will set. The components (if equipped) that the Inflatable Restraint Sensing and Diagnostic Module will detect include inflatable restraint deployment loops, impact sensors, passenger presence system components, seat position sensors, disable switches, and seat belt switches.

Conditions for Running the DTC Ignition voltage is between 9 - 16 V. Conditions for Setting the DTC

The setup for the Inflatable Restraint Sensing and Diagnostic Module has not been completed and the Inflatable Restraint Sensing and Diagnostic Module does not detect the correct number of sensors or deployment loops

than is expected with this calibration.

Action Taken When the DTC Sets

The Inflatable Restraint Sensing and Diagnostic Module requests the Instrument Cluster to illuminate the AIR BAG warning indicator.

The DTC must be cleared before running the setup Inflatable Restraint Sensing and Diagnostic Module.

Air bag indicator will continue to flash until Inflatable Restraint Sensing and Diagnostic Module setup procedure is complete.

Conditions for Clearing the DTC

The condition for setting the DTC is no longer present.

A history DTC will clear once 100 malfunction-free ignition cycles have occurred.

Diagnostic Aids

The Inflatable Restraint Sensing and Diagnostic Module scan tool deployment loop and impact sensor data will match what the Inflatable Restraint Sensing and Diagnostic Module has been programmed to expect to see on the vehicle. B1019 DTC will set if a deployment loop or impact sensor is added or removed from the system.

DTC B1019 will set when an open/high resistance DTC sets for a deployment loop or impact sensor. This causes mismatch between the learned and actual components connected to the Inflatable Restraint Sensing and Diagnostic Module.

DTC B1019 can set with no other DTCs if an unused deployment loop or impact sensor circuit is shorted to ground. This causes a mismatch between the learned and actual components connected to the Inflatable Restraint Sensing and Diagnostic Module.

Reference Information

Schematic Reference

Seat Belt Schematics SIR Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Seat Belt System Description and Operation

Supplemental Inflatable Restraint System Description and Operation

Electrical Information Reference

Circuit Testing

Testing for Intermittent Conditions and Poor Connections Connector Repairs

Wiring Repairs

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

NOTE: DTC B1019 can set after the inflatable restraint sensing and diagnostic module has been replaced and/or reprogrammed before the setup procedure is completed. The setup procedure cannot be completed if DTC B1019 is set as current or history. If a short or open is detected in a deployment circuit prior to the setup procedure being performed, the inflatable restraint sensing and diagnostic module will set DTC B1019.

1. Vehicle in Service Mode.

2. Verify no other Inflatable Restraint Sensing and Diagnostic Module DTCs are set.

If other inflatable restraint sensing and diagnostic module DTCs are set

Diagnose those DTCs first. Refer to Diagnostic Trouble Code (DTC) List - Vehicle

If no other inflatable restraint sensing and diagnostic module DTCs are set

3. Verify the impact sensors called out in the scan tool data list match the number of actual impact sensors installed on the vehicle.

If the number of impact sensors do not match

1. Verify the correct Inflatable Restraint Sensing and Diagnostic Module calibration file is loaded in the inflatable restraint sensing and diagnostic module.

If the inflatable restraint sensing and diagnostic module calibration file is correct and the vehicle contains an incorrect number of sensors, identify which sensors are missing to make the vehicle match the inflatable restraint sensing and diagnostic module impact sensor calibration scan tool data list.

If the calibration file is incorrect

2. Reprogram the Inflatable Restraint Sensing and Diagnostic Module. Refer to Inflatable Restraint Sensing and Diagnostic Module Programming and Setup

If the number of impact sensors match

4. Verify the enabled deployment loops called out in the scan tool data list match the deployment loops installed on the vehicle.

If the number of enabled deployment loops do not match

1. Verify the correct Inflatable Restraint Sensing and Diagnostic Module calibration file is loaded in the inflatable restraint sensing and diagnostic module.

If the inflatable restraint sensing and diagnostic module calibration file is correct and the vehicle contains an incorrect number of loops, identify which deployment loops are missing to make the vehicle match the inflatable restraint sensing and diagnostic module impact sensor calibration scan tool data list.

If the calibration file is incorrect

2. Reprogram the Inflatable Restraint Sensing and Diagnostic Module. Refer to Inflatable Restraint Sensing and Diagnostic Module Programming and Setup

If the number of enabled deployment loops match

5. Verify a passenger presence system is equipped on the vehicle.

If a passenger presence system is not equipped on the vehicle

Replace the K36 Inflatable Restraint Sensing and Diagnostic Module.

If a passenger presence system is equipped on the vehicle

6. Verify the passenger presence enable status called out in the scan tool data list is enabled.

If the passenger presence enable status is not enabled

Refer to Inflatable Restraint Sensing and Diagnostic Module Programming and Setup

If the passenger presence is enabled

7. Verify the passenger presence learn status called out in the scan tool data list is learned.

If the passenger presence learn status is not learned

1. Verify the scan tool can communicate with the passenger presence system.

If the scan tool will not communicate with the passenger presence system, refer to Scan Tool Does Not Communicate with Low Speed GMLAN Device

If the scan tool communicates

2. Vehicle OFF, disconnect the scan tool, wait two minutes.

3. Vehicle in Service Mode, verify DTC B1019 is not set as current.

If the DTC is set as current, refer to Inflatable Restraint Sensing and Diagnostic Module Programming and Setup

If the DTC is not set as current

4. All OK.

If the passenger presence learn status is learned

8. Replace the K36 Inflatable Restraint Sensing and Diagnostic Module.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

SIR/SRS Wiring Repairs

Control Module References for Inflatable Restraint Sensing and Diagnostic Module replacement, programming and setup

PASSENGER PRESENCE SYSTEM REZEROING

Introduction

The inflatable restraints passenger presence system is a calibrated system that requires re-zeroing or a zero check anytime the seat cushion trim attachments have been removed or the passenger presence system has been replaced. The procedures below are designed to assist in the re-zeroing of the passenger presence system.

Before you start, read these procedures carefully and completely. For further information regarding the passenger presence system refer to Supplemental Inflatable Restraint System Description and Operation.

NOTE: The following procedures must be followed:

1. Read this procedure carefully and completely.

2. The passenger presence system will not function properly if the passenger presence system re-zeroing procedure is not performed.

3. Perform the Diagnostic Repair Verification after successfully completing the re-zeroing procedure to ensure the system is functioning properly.

Passenger Presence System Re-zeroing Procedure

NOTE: Before the passenger presence system can be re-zeroed the front passenger seat must be completely empty of all items. The presence of any items on the front passenger seat will affect the calibration and operation of the passenger presence system.

DTC B0081 will set if the re-zero system test is performed with:

An aftermarket seat heater located too close to the sensor mat A scan tool, laptop, or other electronic device is in the seat

The seat is damp or wet

An object or person is in the seat

1. Make sure that temperature is between 32Â°F to 100Â°F before running a Re-zero procedure.

2. Empty the front outboard passenger seat.

3. Verify that all SIR and passenger presence system components, connectors, and connector position assurances are properly connected and mounted.

4. Install a scan tool.

NOTE: The presence of current DTCs, except DTC B0081 4A or B0081 4B, will prevent the passenger presence system from re-zeroing and may set additional DTCs.

5. Vehicle ON, with a scan tool, perform the Passenger Presence Sensor Learn procedure.

6. If the test fails, confirm that the seat is empty. Perform the Passenger Presence Sensor Learn test again. If the test fails again, verify DTC B0081 is not set as current. If the DTC is set refer to Diagnostic Trouble Code (DTC) List - Vehicle . If the test successfully completed, Vehicle OFF.

7. After the passenger presence system has been successfully re-zeroed, perform the Diagnostic Repair Verification .

SYMPTOMS - SIR

IMPORTANT: Complete the following steps before using the symptom tables:

1. Perform Diagnostic System Check - Vehicle before using the symptom tables in order to verify that all

of the following are true:

There are no DTCs set.

The inflatable restraint sensing and diagnostic module (SDM) can communicate via the serial data link.

2. Review the SIR system description and operation in order to familiarize yourself with the system functions. Refer to Supplemental Inflatable Restraint System Description and Operation.

Visual/Physical Inspection

Inspect for aftermarket devices which could affect the operation of the SIR system. Refer to Checking Aftermarket Accessories .

Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.

Intermittent

Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections .

Symptom List

Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:

Airbag Indicator Malfunction (Driver)Airbag Indicator Malfunction (Passenger) in order to diagnose the symptom.

AIRBAG INDICATOR MALFUNCTION (DRIVER)

Diagnostic Instructions

Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Review Strategy Based Diagnosis for an overview of the diagnostic approach.

Diagnostic Procedure Instructions provides an overview of each diagnostic category.

Circuit/System Description

With the Vehicle in Service Mode, during the bulb check, the driver air bag indicator will flash, and then turn OFF after the bulb check. The Inflatable Restraint Sensing and Diagnostic Module (SDM) performs diagnostic tests on the SIR system during the bulb check. If any malfunction exists the Inflatable Restraint Sensing and Diagnostic Module will request the instrument cluster to illuminate the air bag indicator steady, via serial data. If a preexisting malfunction exists, the air bag indicator will illuminate steady immediately after the ignition is turned ON. If the ignition 1 voltage is outside of the normal operating voltage range of 9 - 16 V, the Inflatable Restraint Sensing and Diagnostic Module will command the instrument cluster to illuminate the air bag indicator ON, even with no DTCs present, and then disable all deployment loops.

Diagnostic Aids

A DTC B1370 may set if the ignition 1 circuit is outside the 9 - 16 V range.

A flashing driver air bag indicator is displayed if the inflatable restraint sensing and diagnostic module was programmed but did not fully complete the programming. For a flashing driver airbag indicator, refer

to Inflatable Restraint Sensing and Diagnostic Module Programming and Setup .

Reference Information

Schematic Reference

SIR Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Supplemental Inflatable Restraint System Description and Operation

Electrical Information Reference

Circuit Testing

Testing for Intermittent Conditions and Poor Connections Connector Repairs

Wiring Repairs

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

If the driver air bag indicator is flashing, refer to Inflatable Restraint Sensing and Diagnostic Module Programming and Setup .

Circuit/System Testing

1. Vehicle in Service Mode. With a scan tool, verify Inflatable Restraint Sensing and Diagnostic Module DTCs are not set.

If Inflatable Restraint Sensing and Diagnostic Module DTCs are set

Refer to Diagnostic Trouble Code (DTC) List - Vehicle .

If Inflatable Restraint Sensing and Diagnostic Module DTCs are not set

2. With a scan tool command the Instrument Cluster to turn all instrument cluster indicators ON and OFF. The air bag indicator should turn ON and OFF as commanded.

If air bag indicator does not turn on or off

If the air bag indicator does not turn ON and OFF as expected, replace the P16 Instrument Cluster.

If air bag indicator does turn on or off

3. Replace the K36 Inflatable Restraint Sensing and Diagnostic Module.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

SIR/SRS Wiring Repairs

Control Module References for Instrument Cluster or Inflatable Restraint Sensing and Diagnostic Module replacement, programming and setup

AIRBAG INDICATOR MALFUNCTION (PASSENGER)

Diagnostic Instructions

Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Review Strategy Based Diagnosis for an overview of the diagnostic approach.

Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC B067F 01

Passenger Air Bag On Indicator Circuit Short to Battery

DTC B067F 02

Passenger Air Bag On Indicator Circuit Short to Ground

DTC B067F 04

Passenger Air Bag On Indicator Circuit Open

DTC B0680 01

Passenger Air Bag Off Indicator Circuit Short to Battery

DTC B0680 02

Passenger Air Bag Off Indicator Circuit Short to Ground

DTC B0680 04

Passenger Air Bag Off Indicator Circuit Open

Diagnostic Fault Information

Circuit

Short to Ground

Open/High Resistance

Short to Voltage

Signal Performance

Passenger Air Bag OFF Indicator Control

B0680 02

B0680 04

B0680 01

Passenger Air Bag ON Indicator Control

B067F 02

B067F 04

B067F 01

Circuit

Short to Ground

Open/High Resistance

Short to Voltage

Signal Performance

Passenger Air Bag Disable Indicator Ground

B067F 04, B0680

Circuit/System Description

Conditions for Running the DTC Ignition Voltage is between 9 - 16 V Conditions for Setting the DTC

The SDM detects improper voltage on the control circuit of the passenger air bag ON or OFF indicator

Actions Taken When the DTC Sets

The inflatable restraint sensing and diagnostic module requests the instrument cluster to illuminate the AIR BAG indicator.

Passenger air bag ON and OFF indicators are disabled.

Conditions for Clearing the DTC

The condition for setting the DTC no longer exists.

Reference Information

Schematic Reference

SIR Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Supplemental Inflatable Restraint System Description and Operation

Electrical Information Reference

Circuit Testing

Connector Repairs

Testing for Intermittent Conditions and Poor Connections Wiring Repairs

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

NOTE: The passenger air bag ON and OFF indicators may not operate as expected if there are supplemental inflatable restraint (SIR) DTCs. Repair all SIR DTCs before proceeding with this diagnostic.

1. Ignition ON.

2. With a scan tool command the passenger air bag ON indicator and passenger air bag OFF indicator ON and OFF. The respective indicators should turn ON and OFF as commanded.

3. Verify the passenger air bag ON indicator and passenger air bag OFF indicators turn ON and OFF when commanded ON and OFF with a scan tool.

If the passenger air bag indicators do not change

Refer to Circuit/System Testing

If the passenger air bag indicators change

4. All OK.

Circuit/System Testing

NOTE: When removing connectors inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of the affected.

Passenger air bag disable on/off indicator.

Passenger air bag disable on/off indicator wiring harness.

1. Ignition OFF, disconnect the harness connector at the S48B Multifunction Switch - Instrument Panel.

2. Test for less than 10 Ω between the ground circuit terminal 5 and ground.

If 10 Ω or greater

Repair the open/high resistance in the circuit.

If less than 10 Ω

3. Ignition ON, with a scan tool, command the passenger air bag OFF indictor OFF.

4. Test for less than 11 V between the control circuit terminal 11 and ground.

If 11 V or greater

1. Ignition OFF, disconnect the X1 harness connector at the K36 Inflatable Restraint Sensing and Diagnostic Module. Ignition ON.

2. Test for less than 1 V between the control circuit and ground.

If 1 V or greater, repair the short to voltage on the circuit.

If less than 1 V, replace the K36 Inflatable Restraint Sensing and Diagnostic Module.

If less than 11 V

5. With a scan tool, command the passenger air bag OFF indicator ON.

6. Test for greater than 4 V between the control circuit terminal 11 and ground.

If 4 V or less

1. Ignition OF, disconnect the X1 harness connector at the K36 Inflatable Restraint Sensing and Diagnostic Module.

2. Test for infinite resistance between the control circuit and ground.

If less than infinite resistance, repair the short to ground on the circuit.

3. Test for less than 2 Ω in each control circuit end to end.

If 2 Ω or greater, repair the open/high resistance in the circuit.

If less than 2 Ω, replace the K36 Inflatable Restraint Sensing and Diagnostic Module.

If greater than 4 V

7. With a scan tool, command the passenger air bag ON indicator OFF.

8. Test for less than 11 V between the control circuit terminal 12 and ground.

If 11 V or greater

1. Ignition OFF, disconnect the X1 harness connector at the K36 Inflatable Restraint Sensing and Diagnostic Module. Ignition ON.

2. Test for less than 1 V between the control circuit and ground.

If 1 V or greater, repair the short to voltage on the circuit.

If less than 1 V, replace the K36 Inflatable Restraint Sensing and Diagnostic Module.

If less than 11 V

9. With a scan tool, command the passenger air bag ON indicator ON.

10. Test for greater than 4 V between the control circuit terminal 12 and ground.

If 4 V or less

1. Ignition OFF, disconnect the X1 harness connector at the K36 Inflatable Restraint Sensing and Diagnostic Module.

2. Test for infinite resistance between the control circuit and ground.

If less than infinite resistance, repair the short to ground on the circuit.

3. Test for less than 2 Ω in each control circuit end to end.

If 2 Ω or greater, repair the open/high resistance in the circuit.

If less than 2 Ω, replace the K36 Inflatable Restraint Sensing and Diagnostic Module.

If greater than 4 V

11. Replace the S48B Multifunction Switch - Instrument Panel.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

Roof Console Replacement

Control Module References for inflatable restraint sensing and diagnostic module replacement, programming and setup

SIR DISABLING AND ENABLING

SIR component location affects how a vehicle should be serviced. There are parts of the SIR system installed in various locations around a vehicle. To find the location of the SIR components refer to Master Electrical Component List .

There are several reasons for disabling the SIR system, such as repairs to the SIR system or servicing a component near or attached to an SIR component. There are several ways to disable the SIR system depending on what type of service is being performed. The following information covers the proper procedures for disabling/enabling the SIR system.

Condition	Action
If the vehicle was involved in an accident with an air bag deployment.	Disconnect the negative battery cable(s)
When performing SIR diagnostics.	Follow the appropriate SIR service manual diagnostic procedure(s) *
When moving, removing or replacing an SIR component or a component attached to an SIR component. (Anytime you remove fasteners.)	Disconnect the negative battery cable(s) *
If the vehicle is suspected of having shorted electrical wires.	Disconnect the negative battery cable(s) *
When performing electrical diagnosis on components other than the SIR system.	Remove the SIR/Airbag fuse(s) when indicated by the diagnostic procedure to disable the SIR system
* DTCs will be lost when the negative battery cable is disconnected.

SIR Service Precautions

WARNING: When performing service on or near the SIR components or the SIR wiring, the SIR system must be disabled. Failure to observe the correct procedure could cause deployment of the SIR components. Serious injury can occur. Failure to observe the correct procedure could also result in unnecessary SIR system repairs.

The Inflatable Restraint Sensing and Diagnostic Module (SDM) maintains a reserved energy supply. The reserved energy supply provides deployment power for the air bags if the Inflatable Restraint Sensing and Diagnostic Module loses battery power during a collision. Deployment power is available for as much as 2 minutes after disconnecting the vehicle power. Waiting 2 minutes before working on the system after disabling the SIR system prevents deployment of the air bags from the reserved energy supply.

General Service Instructions

The following are general service instructions which must be followed in order to properly repair the vehicle and return it to its original integrity:

Do not expose air bags to temperatures above 65Â°C (149Â°F).

Verify the correct replacement part number. Do not substitute a component from a different vehicle.

Use only original GM replacement parts available from your authorized GM dealer. Do not use salvaged parts for repairs to the SIR system.

Discard any of the following components if it has been dropped from a height of 92 cm (3 feet) or greater:

Inflatable Restraint Sensing and Diagnostic Module (SDM) Any air bag

Driver steering wheel air bag coil Any impact sensor

Seat belt anchor and/or retractor pretensioners

Passenger presence module and/or occupant sensor

Disabling Procedure - Air Bag Fuse

1. Turn the steering wheel so that the vehicles wheels are pointing straight ahead.

2. Vehicle OFF.

WARNING: The SDM may have more than one fused power input. To ensure there is no unwanted SIR deployment, personal injury, or unnecessary SIR system repairs, remove all fuses supplying power to the SDM. With all SDM fuses removed and the ignition switch in the ON position, the AIR BAG warning indicator illuminates. This is normal operation, and does not indicate a SIR system malfunction.

3. Locate and remove the fuse(s) supplying power to the Inflatable Restraint Sensing and Diagnostic Module. Refer to SIR Schematics, or Electrical Center Identification Views .

4. Wait 2 minutes before working on the system.

Enabling Procedure - Air Bag Fuse

1. Vehicle OFF.

2. Install the fuse(s) supplying power to the Inflatable Restraint Sensing and Diagnostic Module. Refer to

SIR Schematics, or Electrical Center Identification Views .

3. Vehicle in Service Mode. The AIR BAG indicator will flash then turn OFF.

4. Perform the Diagnostic System Check - Vehicle if the AIR BAG warning indicator does not operate as described. Refer to Diagnostic System Check - Vehicle .

Disabling Procedure - Negative Battery Cable

1. Turn the steering wheel so that the vehicles wheels are pointing straight ahead.

2. Vehicle OFF.

3. Disconnect the negative battery cable from the battery. Refer to Battery Negative Cable Disconnection and Connection .

4. Wait 2 minutes before working on system.

Enabling Procedure - Negative Battery Cable

1. Vehicle OFF.

2. Connect the negative battery cable to the battery. Refer to Battery Negative Cable Disconnection and

Connection .

3. Vehicle in Service Mode. The AIR BAG indicator will flash then turn OFF.

4. Perform the Diagnostic System Check - Vehicle if the AIR BAG warning indicator does not operate as described. Refer to Diagnostic System Check - Vehicle .

REPAIR INSTRUCTIONS

SIR SERVICE PRECAUTIONS

General Service Instructions

WARNING: If a service procedure indicates that a module is to be replaced, a new production unit MUST be ordered from the GM Parts Catalog or certified supplier. Using a module that has been reset by a 3rd party company is strictly prohibited. Not using a new production unit may result in improper performance of the safety system in the event of an accident, which may result in bodily injury.

WARNING: When performing service on or near the SIR components or the SIR wiring, the SIR system must be disabled. Refer to SIR Disabling and Enabling. Failure to observe the correct procedure could cause deployment of the SIR components, personal injury, or unnecessary SIR system repairs.

WARNING: Do not strike or jolt the inflatable restraint sensing and diagnostic module (SDM). Before applying power to the SDM, make sure that it is securely fastened with the arrow facing toward the front of the vehicle. Failure to observe the correct installation procedure could cause SIR deployment, personal injury, or unnecessary SIR system repairs.

NOTE: The Inflatable Restraint Sensing and Diagnostic Module (SDM) maintains a reserved energy supply. The reserved energy supply provides deployment power for the SIR air bags. Deployment power may be available for up to 2 minutes after disconnecting the vehicle power. Disabling the SIR system prevents deployment of the SIR air bags from the reserved energy supply.

NOTE: The following are general service instructions which must be followed in order to properly repair the vehicle and return it to its original integrity:

Do not expose air bags to temperatures above 85 Â°C (185 Â°F)

Verify the correct replacement part number. Do not substitute a component from a different vehicle

Use only original GM replacement parts available from your authorized GM dealer. Do not use salvaged parts for repairs to the SIR system

NOTE: Discard any of the following components if it has been dropped from a height of 80 cm (31.49 in) or greater:

Inflatable Restraint Sensing and Diagnostic Module

Passenger instrument panel air bag Driver steering wheel air bag

Driver steering wheel air bag coil Roof rail air bags

Front and /or side impact sensors

Seat belt achor and/or retractor pretensioners Front seat side air bag

Knee air bag

AIRBAG FRONT END DISCRIMINATING SENSOR REPLACEMENT - RIGHT SIDE

Fig. 6: Airbag Front End Discriminating Sensor - Right Side Courtesy of GENERAL MOTORS COMPANY

Callout

Component Name

WARNING:

Refer to SIR Warning .

WARNING:

Refer to SIR Inflator Module Handling

Callout

Component Name

and Storage Warning .

WARNING:

Following the deployment of a side impact air bag, inspect the following parts for damage.

Replace these parts if necessary:

The seat cushion frame

The seat recliner, if equipped

The seat adjuster

The seat back frame

Failure to do so may cause future personal injury.

Preliminary Procedure

1. SIR Disabling and Enabling

2. Air Cleaner Assembly Replacement

Airbag Front End Discriminating Sensor

CAUTION:

Refer to Fastener Caution .

Callout

Component Name

Procedure

1. Disconnect the electrical connector.

2. Loosen the fastener and slide the sensor out of the keyhole slot.

Tighten

7.5 N.m (66 lb in)

NOTE:

The fastener is integral to the sensor assembly, DO NOT

remove separately.

AIRBAG FRONT END DISCRIMINATING SENSOR REPLACEMENT - LEFT SIDE

Fig. 7: Airbag Front End Discriminating Sensor - Left Side Courtesy of GENERAL MOTORS COMPANY

Callout	Component Name
WARNING:

Callout

Component Name

Refer to SIR Warning .

WARNING:

Refer to SIR Inflator Module Handling and Storage Warning .

WARNING:

Following the deployment of a side impact air bag, inspect the following parts for damage.

Replace these parts if necessary:

The seat cushion frame

The seat recliner, if equipped

The seat adjuster

The seat back frame

Failure to do so may cause future personal injury.

Preliminary Procedure

1. Disable the SIR system. SIR Disabling and Enabling

Callout

Component Name

2. It is only necessary to reposition the radiator surge tank. Only do those steps in radiator surge tank replacement that will reposition the surge tank enough to gain access to the sensor. Radiator Surge Tank Replacement (Drive Motor Battery Radiator Surge Tank) Radiator Surge Tank Replacement (Drive Motor Generator Power Inverter Module Surge Tank)

Airbag Front End Discriminating Sensor

CAUTION:

Refer to Fastener Caution .

Procedure

1. Disconnect the electrical connector.

2. Loosen the fastener and slide the sensor out of the keyhole slot.

3. The fastener is integral to the sensor assembly, DO NOT remove separately.

4. Enable the SIR System. SIR Disabling and Enabling

Tighten

7.5 N.m (66 lb in)

NOTE:

Integral sensor assembly bolt uses Left Hand threads. Use counterclockwise rotation to loosen fastener at TORXÂ® tip end. If accessing at pan head end of the fastener, use clockwise rotation to loosen bolt.

AIRBAG SIDE IMPACT SENSOR REPLACEMENT

Fig. 8: Airbag Side Impact Sensor

Courtesy of GENERAL MOTORS COMPANY

Callout

Component Name

WARNING:

Refer to SIR Warning .

WARNING:

Refer to SIR Inflator Module Handling and Storage Warning .

WARNING:

Following the deployment of a side impact air bag, inspect the following parts for damage.

Replace these

Callout

Component Name

parts if necessary:

The seat cushion frame

The seat recliner, if equipped

The seat adjuster

The seat back frame

Failure to do so may cause future personal injury.

Preliminary Procedures

1. SIR Disabling and Enabling

2. Front Side Door Trim Replacement

3. Front Side Door Armrest Bracket Replacement

4. Remove the front side door water deflector.

Airbag Side Impact Sensor

CAUTION:

Refer to Fastener Caution .

Procedure

1. Disconnect the electrical connector.

2. Loosen the fastener and slide the sensor out of the keyhole slot.

3. The fastener is integral to the sensor assembly, DO NOT remove separately.

Tighten

7.5 N.m (66 lb in)

Callout	Component Name
	NOTE:

The sensor

AIRBAG SENisSlIoNcGatAedNDonDIAGNOSTIC MODULE REPLACEMENT

the front door inner panel.

the inside of

Fig. 9: Airbag Sensing And Diagnostic Module Courtesy of GENERAL MOTORS COMPANY

Callout

Component Name

WARNING:

Do not strike or jolt the inflatable restraint Sensing and Diagnostic Module (SDM).

Before applying power to the SDM, make sure that it is securely fastened.

Failure to

Callout

Component Name

observe the correct installation procedure could cause Supplemental Inflatable Restraint (SIR)

deployment, personal injury, or unnecessary SIR system repairs.

WARNING:

Refer to SIR Warning .

Preliminary Procedures

1. Disable the SIR system. SIR Disabling and Enabling

2. Transmission Control Replacement (With Base) Transmission Control Replacement (Without Base)

Airbag Sensing and Diagnostic Module Nut (Qty: 3)

CAUTION:

Refer to Fastener Caution .

Tighten

9 N.m (80 lb in)

Airbag Sensing and Diagnostic Module

Procedure

1. Disconnect the electrical connectors.

2. Perform the necessary programming and setup procedure:Control Module References

3. Enable the SIR System. SIR Disabling and Enabling

STEERING WHEEL AIRBAG REPLACEMENT

Fig. 10: Steering Wheel Airbag

Courtesy of GENERAL MOTORS COMPANY

Callout

Component Name

WARNING:

Refer to SIR Warning .

WARNING:

Refer to SIR Inflator Module Handling and Storage Warning .

Preliminary Procedures SIR Disabling and Enabling

Steering Wheel Airbag

WARNING:

After installation of the steering wheel airbag module to

Callout

Component Name

the steering wheel, slightly pull the module outward. If there is no give on the airbag module then it is secured correctly. If the airbag module is not fully attached personal injury could result.

Procedure

1. Fully Insert a long 3 mm allen wrench or equivalent tool into access holes on the rear left and right side of the steering wheel.

2. Apply and keep constant pressure on handle towards front of vehicle to push the spring fastener inward to release the steering wheel airbag from the steering wheel.

3. Release the connector position assurance (CPA) retainer.

4. Disconnect the electrical connectors.

5. Inflatable Restraint Module Handling and Scrapping

STEERING WHEEL AIRBAG COIL REPLACEMENT

Fig. 11: Steering Wheel Airbag Coil

Courtesy of GENERAL MOTORS COMPANY

Callout

Component Name

Preliminary Procedures

1. Steering Wheel Replacement

2. Steering Column Lower Trim Cover Replacement

3. Reposition the steering column upper trim cover as necessary.

Steering Wheel Airbag Coil

Procedure

1. Disconnect the electrical connectors.

2. Release the retaining tabs and remove the steering wheel airbag coil from the steering column.

3. Ensure the steering wheel airbag coil is CENTERED during installation. Airbag Steering Wheel Module Coil Centering

AIRBAG STEERING WHEEL MODULE COIL CENTERING

Fig. 12: Steering Wheel Airbag Coil

Courtesy of GENERAL MOTORS COMPANY

CAUTION: The new SIR coil assembly will be centered. Improper alignment of the SIR coil assembly may damage the unit, causing an inflatable restraint malfunction.

1. Inspect the steering wheel airbag coil. If the yellow lock pin (1) is present, the uplead post (2) is at the 12 o'clock position and the loop (u-turn) appears in the centering window (3) then the coil is already in the centered position and no further action is required.

Fig. 13: Block Tooth

Courtesy of GENERAL MOTORS COMPANY

2. If the steering wheel airbag coil needs to be centered, perform the following preliminary steps:

1. Ensure the wheels on the vehicle are straight ahead.

2. Ensure the block tooth (1) on the steering shaft is in the 6 o'clock position.

Fig. 14: Centering Steering Wheel Airbag Coil Courtesy of GENERAL MOTORS COMPANY

3. To center the steering wheel airbag coil, perform the following steps:

1. Hold the coil with the face up.

2. Slowly rotate the coil hub clockwise until the coil ribbon stops.

3. Slowly rotate the coil hub counterclockwise approximately 2.5 turns until the uplead post (1) is at the 12 o'clock position.

4. View the centering window (2) and ensure the loop (u-turn) is visible. If the loop is visible then the coil is in the center position.

5. While holding the coil hub in the center position, align the coil with the steering column components and slide the coil onto the steering shaft.

INSTRUMENT PANEL AIRBAG REPLACEMENT

Fig. 15: Instrument Panel Airbag

Courtesy of GENERAL MOTORS COMPANY

Callout

Component Name

WARNING:

Refer to SIR Inflator Module Handling and Storage Warning .

WARNING:

Refer to SIR Warning .

Preliminary Procedures

1. Disable the SIR system. SIR Disabling and Enabling

2. Instrument Panel Assembly Replacement

Instrument Panel Airbag

Procedure

1. Inflatable Restraint Module Handling and Scrapping

Callout

Component Name

2. Insert a wood straight edge, one per side behind all locking tabs, to simultaneously release the instrument panel airbag housing from the instrument panel chute without overextending the airbag locking tabs. Use a wood straight edge that is approximately

50.8 cm (20 in) long and 5 mm (0.20 in) thick with a rounded edge.

3. Enable the SIR System. SIR Disabling and Enabling

INSTRUMENT PANEL LOWER AIRBAG REPLACEMENT - DRIVER SIDE

Fig. 16: Instrument Panel Lower Airbag - Driver Side Courtesy of GENERAL MOTORS COMPANY

Callout

Component Name

WARNING:

Refer to SIR Inflator Module Handling and Storage Warning .

WARNING:

Refer to SIR Warning .

Callout

Component Name

Preliminary Procedure

1. Disable the SIR system. SIR Disabling and Enabling

2. Instrument Panel Knee Bolster Replacement

Instrument Panel Lower Airbag Nut (Qty: 2)

CAUTION:

Refer to Fastener Caution .

Tighten

9 N.m (80 lb in)

Instrument Panel Lower Airbag - Driver Side

Procedure

1. Disconnect the electrical connector.

2. Inflatable Restraint Module Handling and Scrapping

3. Enable the SIR System. SIR Disabling and Enabling

NOTE:

Instrument panel airbag lower bracket shares the same fasteners and will need to be reinstalled in the correct direction.

INSTRUMENT PANEL LOWER AIRBAG REPLACEMENT - PASSENGER SIDE

Fig. 17: Instrument Panel Lower Airbag - Passenger Side Courtesy of GENERAL MOTORS COMPANY

Callout

Component Name

WARNING:

Refer to SIR Inflator Module Handling and Storage Warning .

WARNING:

Refer to SIR Warning .

Preliminary Procedure SIR Disabling and Enabling

Instrument Panel Lower Airbag Nut (Qty: 2)

CAUTION:

Refer to Fastener Caution .

Tighten

Callout

Component Name

9 N.m (80 lb in)

Instrument Panel Lower Airbag - Passenger Side

Procedure

1. Disconnect the electrical connector.

2. Inflatable Restraint Module Handling and Scrapping

3. SIR Disabling and Enabling

AIRBAG FRONT PASSENGER PRESENCE MODULE REPLACEMENT

Fig. 18: Airbag Front Passenger Presence Module Courtesy of GENERAL MOTORS COMPANY

Callout

Component Name

WARNING:

Refer to SIR Warning .

WARNING:

To avoid personal injuries, re- zero the

Callout	Component Name
passenger presence system whenever you remove or replace the seat cushion or trim. Failure to do so may cause the system to malfunction. Preliminary Procedure Front Seat Cushion Cover and Pad Replacement
1	Front Seat Cushion Cover
2	Front Seat Cushion Pad
3	Airbag Front Passenger Presence Module Assembly Procedure 1. Remove the hog rings that attach the passenger presence system to the foam cushion pad. 2. Remove the passenger presence system from the foam cushion pad and heater assembly, if equipped. 3. Note the routing of the wiring harness and connector location for installation. 4. Control Module References for programming or setup information, if required.

FRONT AND REAR ROW SEAT ROOF RAIL AIRBAG REPLACEMENT

Fig. 19: Front And Rear Row Seat Roof Rail Airbag Courtesy of GENERAL MOTORS COMPANY

Callout

Component Name

WARNING:

Refer to SIR Warning .

WARNING:

Refer to SIR Inflator Module Handling and Storage Warning .

Preliminary Procedures

1. SIR Disabling and Enabling

Callout	Component Name
2. It is only necessary to lower the headliner. Only do those steps in headliner replacement that will lower the headliner enough to gain access to the part. Headlining Trim Panel Replacement
1	Front and Rear Row Seat Roof Rail Airbag Fastener (Qty: 8) CAUTION: Refer to Fastener Caution . Tighten 9 N.m (80 lb in)
2	Front and Rear Row Seat Roof Rail Airbag Retainer (Qty: 8)
3	Front and Rear Row Seat Roof Rail Airbag Procedure 1. Disconnect the electrical connector. 2. Remove the roof side rail inflatable restraint module from the vehicle. 3. Inflatable Restraint Module Handling and Scrapping

FRONT SEAT OUTBOARD SEAT BACK AIRBAG REPLACEMENT

Fig. 20: Front Seat Outboard Seat Back Airbag Courtesy of GENERAL MOTORS COMPANY

Callout

Component Name

WARNING:

Following the deployment of a side impact air bag, inspect the following parts for damage.

Replace these parts if necessary:

The seat cushion frame

The seat recliner, if equipped

The seat adjuster

The seat back frame

Failure to do so may cause future personal injury.

Preliminary Procedure Driver or Passenger Seat Back Cover and Pad Replacement

Front Seat Outboard Seat Back Airbag Nut (Qty: 2)

CAUTION:

Refer to Fastener Caution .

Procedure

1. Reposition the wiring harness.

Callout

Component Name

2. Remove the protective caps from the nuts.

Tighten

3.5 N.m (31 lb in)

Front Seat Outboard Seat Back Airbag

Procedure

1. Remove the connector position assurance (CPA) from the module electrical connector.

2. Disconnect the electrical connector.

3. Inflatable Restraint Module Handling and Scrapping

REAR SEAT BOLSTER AIRBAG REPLACEMENT

Fig. 21: Rear Seat Bolster Airbag

Courtesy of GENERAL MOTORS COMPANY

Callout

Component Name

WARNING:

Refer to SIR Warning .

WARNING:

Callout

Component Name

Following the deployment of a rear seat side air bag, inspect the following parts for damage.

Replace these parts if necessary:

The rear seat side bolster, attachments, brackets and wiring

The rear seat back frame, cushion and cover

The rear seat cushion frame, cushion and cover

Failure to do so may cause future personal injury.

Preliminary Procedure Rear Seat Back Bolster Replacement

Rear Seat Back Bolster

Rear Seat Bolster Airbag Nut (Qty: 2)

CAUTION:

Refer to Fastener Caution .

Tighten

3.25 N.m (29 lb in)

Rear Seat Bolster Airbag

Procedure

Callout

Component Name

1. Disconnect the electrical connector.

2. Inflatable Restraint Module Handling and Scrapping.

AIRBAG SIDE IMPACT REAR SENSOR REPLACEMENT

Fig. 22: Airbag Side Impact Rear Sensor Courtesy of GENERAL MOTORS COMPANY

Callout

Component Name

WARNING:

Refer to SIR Warning .

WARNING:

Refer to SIR Inflator Module Handling and Storage Warning .

WARNING:

Callout

Component Name

Following the deployment of a side impact air bag, inspect the following parts for damage.

Replace these parts if necessary:

The seat cushion frame

The seat recliner, if equipped

The seat adjuster

The seat back frame

Failure to do so may cause future personal injury.

Preliminary Procedures

1. SIR Disabling and Enabling

2. Rear Seat Back Bolster Replacement

Airbag Side Impact Rear Sensor

CAUTION:

Refer to Fastener Caution .

Procedure

1. Disconnect the electrical connector.

2. Loosen the fastener and slide the sensor out of the keyhole slot.

Callout

Component Name

NOTE:

Tighten

7.5 N.m (66 lb in)

FRONT SEAT BELT RETRACTOR REPLACEMENT

Fig. 23: Front Seat Belt Retractor Components Courtesy of GENERAL MOTORS COMPANY

Callout

Component Name

Callout

Component Name

WARNING:

Refer to SIR Warning .

WARNING:

Refer to SIR Inflator Module Handling and Storage Warning .

WARNING:

In order to prevent accidental deployment and the risk of personal injury, do not dispose of an undeployed inflatable restraint seat belt pretensioner as normal shop waste. Undeployed seat belt pretensioners contain substances that could cause severe illness or personal injury if their sealed containers are damaged during disposal. Use the following deployment procedures to safely

Callout

Component Name

dispose of an undeployed seat belt pretensioner. Failure to observe the following disposal methods may be a violation of appropriate country, regional or local laws.

Preliminary Procedures

1. SIR Disabling and Enabling

2. Center Pillar Upper Trim Panel Replacement

3. Move the front seat to a full forward and full up position.

Front Seat Belt Anchor Plate Tensioner Cover

Front Seat Belt Anchor Plate Tensioner Cover Bolt

CAUTION:

Refer to Fastener Caution .

Tighten

6 N.m (53 lb in)

Front Seat Belt Retractor D Ring Bolt

Tighten

45 N.m (33 lb ft)

Front Seat Belt Intermediate Guide Retainer

Front Seat Belt Retractor Bolt - Upper

Tighten

9 N.m (80 lb in)

Front Seat Belt Retractor Bolt - Lower

Tighten

45 N.m (33 lb ft)

Front Seat Belt Retractor

1. Disconnect the electrical connector.

Callout	Component Name
	2. Pretensioner Handling and Scrapping

FRONT SEAT BELT ANCHOR PLATE TENSIONER REPLACEMENT

Fig. 24: Front Seat Belt Anchor Plate Tensioner Courtesy of GENERAL MOTORS COMPANY

Callout

Component Name

WARNING:

Refer to SIR Warning .

WARNING:

Refer to SIR Inflator Module Handling and Storage Warning .

Preliminary Procedures

1. SIR Disabling and Enabling

2. Driver or Passenger Seat Removal and Installation

Callout

Component Name

3. Front Seat Belt Anchor Plate Tensioner Cover Replacement

Front Seat Belt Anchor Plate Tensioner Bolt

CAUTION:

Refer to Fastener Caution .

Tighten

45 N.m (33 lb ft)

Front Seat Belt Anchor Plate Tensioner

Procedure

Disconnect the electrical connector.

REPAIRS AND INSPECTIONS REQUIRED AFTER A COLLISION

Accident With or Without Air Bag Deployment - Component Inspections

WARNING: Proper operation of the Supplemental Inflatable Restraint (SIR) sensing system requires that any repairs to the vehicle structure return the vehicle structure to the original production configuration. Not properly repairing the vehicle structure could cause non-deployment of the air bag(s) in a frontal collision or deployment of the air bag(s) for conditions less severe than intended.

After any collision, inspect the following components as indicated. If you detect any damage, replace the component. If you detect any damage to the mounting points or mounting hardware, repair the component or replace the hardware as needed.

The high voltage system - Inspect the high voltage system. Refer to High Voltage System Inspection .

The steering column - Inspect the steering column for bending, twisting, buckling or any type of damage. The instrument panel knee bolsters and mounting points - Inspect the knee bolsters for bending, twisting,

buckling, or any other type of damage.

The instrument panel brackets, braces, etc. - Inspect for bending, twisting, buckling, or any other type of damage.

The seat belts - Perform the seat belt operational and functional checks. Refer to Repairs and Inspections Required After a Collision .

The instrument panel cross car beam - Inspect for bending, twisting, buckling, or any other type of damage.

The instrument panel mounting points and brackets - Inspect for bending, twisting, buckling, or any other type of damage.

The seats and seat mounting points - Inspect for bending, twisting, buckling, or any other type of damage. The roof and headliner mounting points.

The brake pedal --Inspect the brake pedal for bending, twisting, buckling or any type of damage.

Accident With Frontal Air Bag Deployment - Component Replacement and Inspections

After a collision involving air bag deployment, replace the following components.

Driver steering wheel air bag

Passenger instrument panel air bag, if deployed

Inflatable Restraint Sensing and Diagnostic Module (SDM), if the Inflatable Restraint Sensing and Diagnostic Module has set DTC B0052 and will not clear

Front and/or side impact sensors

Driver/Passenger seat side air bag, if deployed Seat back cover if side seat air bag is deployed

Driver/Passenger seat belt anchor and/or retractor pretensioners

Perform additional inspections on the following components.

Steering wheel air bag coil and the coil wiring pigtail - Inspect for melting, scorching, or other damage due to excessive heat.

Mounting points or mounting hardware for the passenger instrument panel air bag, steering wheel air bag, SDM, seat side air bag (if deployed) and seat belt anchor and/or retractor pretensioners - Inspect for any damage and repair or replace each component as needed.

Accident With Side Seat Air Bag Deployment - Component Replacement and Inspections

After a collision involving driver/passenger side seat air bag deployment, replace the following components.

Left/right side impact sensors on the side of the impact. Left/right roof rail air bag on the side of the impact.

Inflatable Restraint Sensing and Diagnostic Module (SDM), if the Inflatable Restraint Sensing and Diagnostic Module has set DTC B0052 and will not clear

Inflatable restraint seat belt anchor and/or retractor pretensioner. Driver or passenger seat back cushion cover replacement.

WARNING: Do not repair or replace the seat stitching or seams in the seat back trim cover with an internal mounted seat side airbag module. Replace the complete seat back trim cover from the OEM. Non-OEM seat stitching may cause improper airbag deployment which could result in personal injury.

Perform additional inspections on the following components.

Mounting points or mounting hardware for the side impact sensors, and driver/passenger side seat air bags on the side of impact - Inspect for any damage and repair or replace each component as needed.

Mounting points, mounting hardware, headliner and trim pieces for the left/right roof rail air bag on the side of impact - Inspect for any damage and repair or replace each component as needed.

Mounting points or mounting hardware for the SDM and seat belt anchor and/or retractor pretensioners - Inspect for any damage and repair or replace each component as needed.

The seat cushion frame

The seat recliner and cover, if equipped The seat adjuster

The seat back frame Door trim assembly

Impacted seat cushion side covers and switches

Impact Sensor Replacement Guidelines

The impact sensor replacement policy requires replacing sensors in the area of the accident damage. The area of accident damage is defined as the portion of the vehicle which is crushed, bent, or damaged due to a collision. An example of this would be a moderate collision where the front of the vehicle impacts a object. If the vehicle has an impact sensor mounted forward of the radiator, it must be replaced.

Replace the impact sensor whether or not the air bags have deployed. Replace the impact sensor even if it appears to be undamaged.

Impact sensor damage which is not visible, such as slight bending of the mounting bracket or cuts in the wire insulation, can cause improper operation of the SIR system. Do not try to determine whether the impact sensor is undamaged, replace the impact sensor. Also, if you follow a diagnostic trouble code (DTC) procedure and a malfunctioning impact sensor is indicated, replace the impact sensor.

INFLATABLE RESTRAINT MODULE HANDLING AND SCRAPPING

Special Tools

EL-38826 SIR Deployment Harness

EL-39401-B SIR Deployment Fixture

For equivalent regional tools, refer to Special Tools.

Live and Undeployed Air Bag

WARNING: Refer to SIR Inflator Module Handling and Storage Warning .

Take special care when handling or storing an undeployed air bag. An air bag deployment produces a rapid generation of gas. This may cause the air bag, or an object in front of the air bag, to project through the air in the event of an unlikely deployment.

Dual Stage Air Bags

Dual stage air bags have two deployment stages. If stage 1 was used to deploy a dual stage air bag, stage 2 may still be active. Therefore, a deployed dual stage air bag must be treated as an active air bag. If disposal of a dual stage air bag is required, both deployment loops must be energized to deploy the air bag.

Scrapping Procedure

During the course of a vehicle's useful life, certain situations may arise which will require the disposal of a live and undeployed air bag. Do NOT dispose a live and undeployed air bag through normal disposal channels until the air bag has been deployed.

Do not deploy the air bag in the following situations:

After replacement of an air bag under warranty - the air bag may need to be returned undeployed to the manufacturer.

If the vehicle is the subject of a product liability claim, related to the SIR system and is subject to a preliminary investigation - do NOT alter the SIR system in any manner.

If the vehicle is involved in a campaign affecting the air bags - follow the instructions in the campaign service bulletin for proper SIR handling procedures.

Deployment Procedures

NOTE: Some countries, states or localities may not allow service deployment of air bags without special permission or training. Local laws regarding deploying and scrapping of air bags/devices with pyrotechnics must be followed.

You can deploy the air bag either inside or outside of the vehicle. The method used depends upon the final disposition of the vehicle. Review the following procedures in order to determine which will work best in a given situation:

Deployment Outside Vehicle - Steering Wheel Air Bag, Instrument Panel Air Bag, and Roof Rail Air Bag

Deploy the air bag outside of the vehicle when the vehicle will be returned to service. Situations that require deployment outside of the vehicle include the following:

Using the SIR diagnostics, you determine that the air bag is malfunctioning. The air bag is cosmetically damaged, scratched, or ripped.

The air bag pigtail is damaged.

The air bag connector is damaged.

The air bag connector terminals are damaged.

Deployment and disposal of a malfunctioning air bag is subject to any required retention period.

WARNING: Refer to SIR Inflator Module Disposal Warning .

1. Vehicle OFF.

WARNING: Refer to SIR Inflator Module Handling and Storage Warning .

2. Remove the air bag.

Fig. 25: Identifying Clearance For Deployment Of Inflator Module Courtesy of GENERAL MOTORS COMPANY

3. Clear a space on the ground about 1.85 m (6 ft) in diameter for deployment of the air bag or deployment fixture. If possible, use a paved, outdoor location free of activity. Otherwise, use a space free of activity on the shop floor. Ensure you have sufficient ventilation.

4. Clear the area of loose or flammable objects.

NOTE: Dual stage deployments are only used in steering wheel and instrument panel air bags. If stage 1 was used to deploy a dual stage air bag, stage 2 may still be active. If disposal of a dual stage air bag is required, both deployment loops must be energized to deploy the air bag.

5. If you are deploying a steering wheel air bag, place the air bag in the center of the space with the vinyl trim cover facing up and away from the surface.

Fig. 26: Identifying I/P Module Components Courtesy of GENERAL MOTORS COMPANY

6. When deploying an instrument panel air bag, perform the following instructions:

1. Place the EL-39401-B fixture in the center of the cleared area.

2. Fill the deployment fixture with water or sand.

3. Using the proper nuts and bolts, mount the instrument panel air bag (1) to the deployment fixture (2), with the vinyl trim facing up.

4. Securely tighten all fasteners that hold the instrument panel air bag (1) to the deployment fixture (2).

Fig. 27: Identifying Fasteners Holding Side Impact Module To Deployment Fixture Courtesy of GENERAL MOTORS COMPANY

7. When deploying a roof rail air bag, perform the following instructions:

1. Place the EL-39401-B fixture (3) in the center of the cleared area.

2. Fill the deployment fixture with water or sand to provide sufficient stabilization of fixture during deployment.

3. Adjust and secure the fixture arms (4) to the deployment fixture (3), using the proper nuts and bolts.

4. Attach the roof rail air bag in the deployment fixture and securely tighten all fasteners.

Fig. 28: Identifying SIR Deployment Harness & Adapter Courtesy of GENERAL MOTORS COMPANY

8. Inspect the EL-38826 harness and the appropriate pigtail adapter (2) for damage. Replace as needed.

9. Short the 2 SIR deployment harness leads (1) together using one banana plug seated into the other.

10. Connect the appropriate pigtail adapter (2) to the SIR deployment harness (1).

Fig. 29: Extending SIR Deployment Harness & Adapter Courtesy of GENERAL MOTORS COMPANY

11. Extend the SIR deployment harness and adapter to the full length from the deployment fixture or area.

Fig. 30: Identifying Inflator Module, SIR Deployment Harness & Adapter Courtesy of GENERAL MOTORS COMPANY

NOTE: On a dual stage air bag, both connectors must be attached to the deployment harness adapter. This will ensure that both stage 1 and stage 2 of the deployment loops are energized, regardless of the deployment state.

12. Connect the air bag (1) to the adapter (2) on the SIR deployment harness (3).

NOTE: The rapid expansion of gas involved with deploying an air bag is very loud. Notify all the people in the immediate area that you intend to deploy the air bag.

When the air bag deploys, the deployment fixture may jump about 30 cm (1 ft) vertically. This is a normal reaction of the air bag due to the force of the rapid expansion of gas inside the air bag.

If you are deploying a dual stage air bag with stage 1 already deployed, the fixture may not move and the noise may have been

reduced.

13. Clear the area of people.

Fig. 31: Separating Banana Plugs

Courtesy of GENERAL MOTORS COMPANY

14. Separate the 2 banana plugs on the SIR deployment harness that were shorted together earlier in the procedure.

Fig. 32: Identifying SIR Deployment Harness Wires To Power Source Courtesy of GENERAL MOTORS COMPANY

15. Place a 12 V minimum/2A minimum power source, such as a vehicle battery, near the shorted end of the harness.

16. Connect the SIR deployment harness wires to the power source. Deployment of the air bag will occur when contact is made.

Fig. 33: View Of Deployment Harness Leads Courtesy of GENERAL MOTORS COMPANY

17. Disconnect the SIR deployment harness from the power source after the air bag deploys.

18. If the air bag did not deploy, disconnect the adapter and discontinue the procedure and contact the Technical Assistance Group.

If deployment was successful, proceed to the following steps.

WARNING: Refer to SIR Deployed Inflator Modules Are Hot Warning .

19. Seat one banana plug into the other in order to short the deployment harness leads.

20. Put on a pair of shop gloves.

21. Disconnect the pigtail adapter from the air bag as soon as possible.

22. Inspect the pigtail adapter and the SIR deployment harness. Replace as needed.

23. Dispose of the deployed air bag through normal refuse channels.

24. Wash your hands with a mild soap.

Deployment Inside Vehicle - Vehicle Scrapping Procedure

Deploy the air bags inside of the vehicle when destroying the vehicle or when salvaging the vehicle for parts. This includes, but is not limited to, the following situations:

The vehicle has completed all useful life.

Irrepairable damage occurred to the vehicle in a non-deployment type accident. Irrepairable damage occurred to the vehicle during a theft.

The vehicle is being salvaged for parts to be used on a vehicle with a different VIN, as opposed to rebuilding as the same VIN.

WARNING: Refer to SIR Inflatable Module Deployment Outside Vehicle Warning .

1. Lower the driver and passenger windows.

2. Vehicle OFF, and remove the key(s) from vehicle.

3. Check that all air bags which will be deployed are mounted securely.

4. Remove all loose objects from the front seats.

Fig. 34: Identifying I/P Module Connector To Vehicle Harness Connector (LH Side I/P) Courtesy of GENERAL MOTORS COMPANY

WARNING: A deployed dual stage inflator module will look the same whether one or both stages were used. Always assume a deployed dual stage inflator module has an active stage 2. Improper handling or servicing can activate the inflator module and cause personal injury.

5. Disconnect the steering wheel air bag yellow connector (1) from vehicle harness yellow connector (3).

Fig. 35: Stripping SIR Wires

Courtesy of GENERAL MOTORS COMPANY

NOTE: If the vehicle is equipped with dual stage air bags the steering wheel air bag and instrument panel air bag will each have 4 wires. Refer to COMPONENT CONNECTOR END VIEWS - INDEX for determining high and low circuits.

6. Cut the yellow harness connector out of the vehicle, leaving at least 16 cm (6 in) of wire at the connector.

7. Strip 13 mm (0.5 in) of insulation from each of the connector wire leads.

Fig. 36: Fabricating 20 Ft. Deployment Harness Courtesy of GENERAL MOTORS COMPANY

8. Cut two 6.1 m (20 ft) deployment wires from a 0.8 mm (18 gauge) or thicker multi-strand wire. Use these wires to fabricate the driver deployment harness.

9. Strip 13 mm (0.5 in) of insulation from both ends of the wires.

10. Twist together one end from each of the wires in order to short the wires. Deployment wires shall remain shorted, and not connected to a power source until you are ready to deploy the air bag.

Fig. 37: Twisting Connector Wire Leads (High Circuits) To Deployment Harness Wire Courtesy of GENERAL MOTORS COMPANY

11. Twist together the 2 connector wire leads from the high circuits from both stages of the steering wheel air bag, to one set of deployment wires. Refer to COMPONENT CONNECTOR END VIEWS - INDEX in order to determine the correct circuits.

12. Inspect that the 3-wire connection is secure.

13. Secure and insulate the 3-wire connection to the deployment harness using electrical tape.

Fig. 38: Twisting Connector Wire Leads (Low Circuits) To Deployment Harness Wire Courtesy of GENERAL MOTORS COMPANY

14. Twist together the 2 connector wire leads from the low circuits from both stages of the steering wheel air bag, to one set of deployment wires. Refer to COMPONENT CONNECTOR END VIEWS - INDEX in order to determine the correct circuits.

15. Inspect that the 3-wire connection is secure.

16. Secure and insulate the 3-wire connection to the deployment harness using electrical tape.

17. Connect the deployment harness to the connector on the steering wheel air bag.

18. Route the deployment harness out of the driver side of the vehicle.

19. Disconnect the yellow left roof rail harness connector from the vehicle harness connector.

20. Cut the harness connector out of the vehicle, leaving at least 16 cm (6 in) of wire at the connector.

21. Strip 13 mm (0.5 in) of insulation from each of the connector wire leads.

22. Cut two 6.1 m (20 ft) deployment wires from a 0.8 mm (18 gauge) or thicker multi-strand wire. These wires will be used to fabricate the roof rail air bag deployment harness.

23. Strip 13 mm (0.5 in) of insulation from both ends of the wires.

24. Twist together one end from each of the wires in order to short the wires.

25. Twist together one connector wire lead to one deployment wire.

26. Secure and insulate the connection using electrical tape.

27. Twist together and tape the remaining connector wire lead to the remaining deployment wire.

28. Connect the deployment harness to the yellow connector of the roof rail air bag.

29. Route the deployment harness out of the driver side of the vehicle.

Fig. 39: Identifying I/P Module Connector To Vehicle Harness Connector Courtesy of GENERAL MOTORS COMPANY

30. Disconnect the instrument panel air bag yellow harness connector (1) from the vehicle harness connector (2).

31. Cut the yellow harness connector out of the vehicle, leaving at least 16 cm (6 in) of wire at the connector.

32. Strip 13 mm (0.5 in) of insulation from each of the connector wire leads.

33. Cut two 6.1 m (20 ft) deployment wires from a 0.8 mm (18 gauge) or thicker multi-strand wire. These wires will be used to fabricate the passenger deployment harness.

34. Strip 13 mm (0.5 in) of insulation from both ends of the wires.

35. Twist together one end from each of the wires in order to short the wires.

36. Twist together the 2 connector wire leads from the high circuits from both stages of the instrument panel air bag to one set of deployment wires. Refer to COMPONENT CONNECTOR END VIEWS - INDEX in order to determine the correct circuits.

37. Inspect that the 3-wire connection is secure.

38. Secure and insulate the 3-wire connection to the deployment harness using electrical tape.

39. Twist together the 2 connector wire leads from the low circuits from both stages of the instrument panel air bag to one set of deployment wires. Refer to COMPONENT CONNECTOR END VIEWS - INDEX in order to determine the correct circuits.

40. Inspect that the 3-wire connection is secure.

41. Secure and insulate the 3-wire connection to the deployment harness using electrical tape.

42. Connect the deployment harness to the instrument panel air bag in-line connector.

43. Route the deployment harness out of the passenger side of the vehicle.

44. Disconnect the yellow harness connector to the right roof rail air bag from the vehicle harness connector.

45. Cut the harness connector out of the vehicle, leaving at least 16 cm (6 in) of wire at the connector.

46. Strip 13 mm (0.5 in) of insulation from each of the connector wire leads.

47. Cut two 6.1 m (20 ft) deployment wires from a 0.8 mm (18 gauge) or thicker multi-strand wire. These wires will be used to fabricate the roof rail air bag deployment harness.

48. Strip 13 mm (0.5 in) of insulation from both ends of the wires.

49. Twist together one end from each of the wires in order to short the wires.

50. Twist together one connector wire lead to one deployment wire.

51. Secure and insulate the connection using electrical tape.

52. Twist together and tape the remaining connector wire lead to the remaining deployment wire.

53. Connect the deployment harness to the roof rail air bag yellow connector.

54. Route the deployment harness out of the passenger side of the vehicle.

55. Completely cover the windshield and the front door window openings with a drop cloth.

56. Stretch to the full length all of the deployment harness wires on the right side of the vehicle.

57. Deploy each deployment loop one at a time.

58. Place a power source, 12 V minimum/2A minimum, such as a vehicle battery, near the shorted end of the harnesses.

59. Separate one set of wires and touch the wire ends to the power source in order to deploy the selected air bag.

60. Disconnect the deployment harness from the power source and twist the wire ends together.

61. Continue the same process with the remaining deployment harnesses.

62. Disconnect all harnesses from the vehicle.

63. Discard the harnesses.

64. Scrap the vehicle in the same manner as a non-SIR equipped vehicle.

65. If one or all of the air bags did not deploy, remove the undeployed air bags from the vehicle.

PRETENSIONER HANDLING AND SCRAPPING

Scrapping Procedure

During the course of a vehicles useful life, certain situations may arise which will necessitate the disposal of a live (undeployed) pretensioner. The following information covers the proper procedures for the disposing of a live (undeployed) pretensioner. Deploy the pretensioner before disposal. Do not dispose of a live (undeployed) pretensioner through normal disposal channels until the pretensioner has been deployed. The following information covers the proper procedures for the disposing of a live (undeployed) pretensioner.

After replacement of a pretensioner under warranty. The pretensioner may need to be returned undeployed to the original manufacturer of pretensioner.

If the vehicle is the subject of a Product Liability report related to the SIR system and is subject to a Preliminary Investigation (GM-1241). Do not alter the SIR system in any manner.

If the vehicle is involved in a campaign affecting the pretensioners. Follow the instructions in the Campaign Service Bulletin for proper SIR handling procedures.

Deployment Procedures

The pretensioner can be deployed inside or outside of the vehicle. The method used depends upon the final disposition of the vehicle. Review the following procedures in order to determine which will work best in a given situation.

Deployment Inside the Vehicle

Refer to Inflatable Restraint Module Handling and Scrapping for deploying the pretensioner inside vehicle under Vehicle Scrapping Procedure.

Deployment Outside Vehicle for Seat Belt Pretensioners

Deploy the seat belt pretensioners outside of the vehicle when the vehicle will be returned to service. Situations that require deployment outside of the vehicle include the following:

Using the SIR diagnostics, you determine that the seat belt pretensioner is malfunctioning. The pretensioner pigtail (if equipped) is damaged.

The pretensioner connector is damaged.

The pretensioner connector terminal is damaged.

Deployment and disposal of a malfunctioning seat belt pretensioner is subject to any required retention period.

WARNING: In order to prevent accidental deployment of the pretensioner which could cause personal injury, do not dispose of an undeployed pretensioner as normal shop waste. The undeployed pretensioner contains substances that could

cause severe illness or personal injury if the sealed container is damaged during disposal. Use the following deployment procedures to safely dispose of an undeployed pretensioner. Failure to dispose of a pretensioner as instructed may be a violation of federal, state, or local laws.

WARNING: When you are deploying a pretensioner for disposal, perform the deployment procedures in the order listed. Failure to follow the procedures in the order listed may result in personal injury.

Special Tools

EL-39401-B SIR Deployment Fixture

EL-38826 SIR Deployment Harness

Fig. 40: Proper Pretensioner Carrying Courtesy of GENERAL MOTORS COMPANY

1. Turn the ignition switch to the OFF position.

2. Remove the ignition key.

3. Put on safety glasses.

4. Remove the seat belt pretensioner from the vehicle.

5. When carrying a pretensioner to the deployment area keep the open end of pretensioner pointed away from the body.

Fig. 41: Pretensioner Deployment Area Courtesy of GENERAL MOTORS COMPANY

6. Clear a space on the ground about 1.85 M (6 ft) in diameter for deployment of the pretensioner. If possible, use a paved, outdoor location free of activity. Otherwise, use a space free of activity on the shop floor. Make sure you have sufficient ventilation.

7. Make sure no loose or flammable objects are in the area.

8. Place the EL-39401-B SIR deployment fixture in the center of the cleared area.

9. Fill the fixture plastic reservoir with water or sand.

Fig. 42: Mounting Pretensioner In SIR Deployment Fixture Courtesy of GENERAL MOTORS COMPANY

10. Mount the pretensioner (1) in the SIR deployment fixture (3) with the open end facing up using the following mounting method.

1. Adjust and secure the EL-39401-B arms (4) to the deployment fixture (3).

2. To mount, use the proper size bolt (2) and nut (5) with washers in order to secure the pretensioner

(1) to the deployment fixture brackets (4).

3. Securely tighten all fasteners prior to deployment.

Fig. 43: Identifying SIR Deployment Harness & Adapter Courtesy of GENERAL MOTORS COMPANY

11. Inspect the EL-38826 SIR deployment harness and the appropriate pigtail adapter for damage. Replace as needed.

12. Short the 2 SIR deployment harness (1) leads together using one banana plug seated into the other.

13. Connect the appropriate pigtail adapter (2) to the SIR deployment harness (1).

Fig. 44: Extending SIR Deployment Harness & Adapter Courtesy of GENERAL MOTORS COMPANY

14. Extend the SIR deployment harness and adapter to full length from the deployment fixture.

Fig. 45: Connecting Pretensioner To Adapter Courtesy of GENERAL MOTORS COMPANY

15. Connect the pretensioner (1) to the adapter (2) on the deployment harness (3).

NOTE: The rapid gas expansion involved with deploying a pretensioner is very loud. Notify all the people in the immediate area that you intend to deploy the seat belt pretensioner.

16. Clear the area of people.

Fig. 46: Separating Banana Plugs

Courtesy of GENERAL MOTORS COMPANY

WARNING: When you are deploying a pretensioner for disposal, perform the deployment procedures in the order listed. Failure to follow the procedures in the order listed may result in personal injury.

17. Separate the 2 banana plugs on the SIR deployment harness.

Fig. 47: Deploying Pretensioner

Courtesy of GENERAL MOTORS COMPANY

NOTE: When the seat belt pretensioner deploys, the deployment fixture may jump about 30 cm (1 ft) vertically. This is a normal reaction of the seat belt pretensioner due to the force of the rapid expansion of gas inside the pretensioner.

18. Place a 12 V minimum/2 A minimum power source (i.e., vehicle battery) near the shorted end of the harness.

19. Connect the SIR deployment harness wires to the power source. Pretensioner deployment will occur when contact is made.

20. Disconnect the SIR deployment harness from the power source after the pretensioner deploys.

Fig. 48: View Of Deployment Harness Leads Courtesy of GENERAL MOTORS COMPANY

21. Seat one banana plug into the other in order to short the deployment harness leads.

22. If the pretensioner did not deploy, disconnect the adapter and discontinue the procedure. Contact the Technical Assistance Group. Otherwise, proceed to the following steps.

23. Put on a pair of shop gloves.

24. Disconnect the pigtail adapter from the pretensioner as soon as possible.

25. Inspect the pigtail adapter and the SIR deployment harness. Replace as needed.

26. Dispose of the deployed pretensioner through normal refuse channels.

27. Wash hands with a mild soap.

DESCRIPTION AND OPERATION

SUPPLEMENTAL INFLATABLE RESTRAINT SYSTEM DESCRIPTION AND OPERATION

SIR System Overview

The supplemental inflatable restraint (SIR) system supplements the protection offered by the seat belts. The SIR system contains an inflatable restraint sensing and diagnostic module (SDM), air bags, seat belt pretensioners (anchor and retractor), and impact sensors. The SDM determines the severity of a collision with the assistance of impact sensors located at strategic points on the vehicle. When the SDM detects a collision, the SDM will process the information provided by the impact sensors to further support air bag or pretensioner deployment.

The SDM will deploy the air bags and pretensioners if it detects a collision of sufficient force. If the force of the impact is not sufficient to warrant air bag deployment, the SDM may still deploy the seat belt pretensioners. The SDM contains a sensing device that converts vehicle velocity changes to an electrical signal. The SDM compares these signals to values stored in memory. If the signals exceed a stored value, the SDM will determine the severity of the impact and either cause current to flow through the frontal deployment loops deploying the frontal air bags and pretensioners, or it will deploy the pretensioners only. The SDM continuously monitors the deployment loops for malfunctions and illuminates the AIR BAG indicator if a fault is detected.The SDM performs continuous diagnostic monitoring of the SIR system electrical components. Upon detection of a circuit malfunction, the SDM will set a DTC and inform the driver by illuminating the AIR BAG indicator. The steering column and knee bolsters are designed to absorb energy and compress during frontal collisions in order to limit leg movement and decrease the chance of injury to the driver and passenger.

AIR BAG Indicator (Driver)

The AIR BAG indicator, located in the instrument cluster, is used to notify the driver of SIR system malfunctions and to verify that the inflatable restraint sensing and diagnostic module (SDM) is communicating with the instrument cluster. When the ignition is turned ON, the SDM is supplied with ignition positive voltage. The instrument cluster will momentarily turn on the AIR BAG indicator. While the indicator is on, the SDM conducts tests on all SIR system components and circuits. If no malfunctions are detected the SDM will communicate with the instrument cluster through the serial data circuit and command the AIR BAG indicator OFF. The SDM provides continuous monitoring of the air bag circuits by conducting a sequence of checks. If a malfunction is detected the SDM will store a diagnostic trouble code (DTC) and command the instrument cluster to illuminate the AIR BAG indicator via serial data. The presence of a SIR system malfunction could result in non-deployment of the air bags or deployment in conditions less severe than intended. The AIR BAG indicator will remain ON until the malfunction has been repaired.

Inflatable Restraint Sensing and Diagnostic Module (SDM)

The inflatable restraint sensing and diagnostic module (SDM) is a microprocessor and the control center for the supplemental inflatable restraint (SIR) system. The SDM contains internal sensors along with external impact sensors, mounted at strategic locations on the vehicle. In the event of a collision, the SDM compares the signals from the internal and external impact sensors to a value stored in memory. When the generated signals exceed the stored value, the SDM will cause current to flow through the appropriate deployment loops to deploy the air bags. The SDM records the SIR system status when a deployment occurs and illuminates the AIR BAG indicator located in the instrument cluster. The SDM performs continuous diagnostic monitoring of the SIR system electrical components and circuitry when the ignition is turned ON. If the SDM detects a malfunction, a DTC will be stored and the SDM will request the instrument cluster to illuminate the AIR BAG indicator, notifying the driver that a malfunction exists. In the event that ignition positive voltage is lost during a collision, the SDM maintains a 23-volt loop reserve for deployment of the air bags. It is important when disabling the SIR system for servicing or rescue operations to allow the 23-volt loop reserve to dissipate, which could take up to 1 minute.

Air Bags

This vehicle may contain up to 10 air bags. The 10 air bags are located in the steering wheel (dual air bags), instrument panel (passenger side) (dual air bags), driver seat side (B-pillar), passenger seat side (B-pillar), left rear seat side, right rear seat side, left roof rail, right roof rail, driver knee (instrument panel), passenger knee (instrument panel). To view the locations of the air bags refer to Master Electrical Component List . Air bags contain a housing, inflatable air bag, two initiating devices (if dual air bag), canister of gas generating material and, in some cases, stored compressed gas. The deployment loops supply current through the air bags to deploy the air bags. The steering wheel and passenger instrument panel air bags have two stages of deployment, which varies the amount of restraint to the occupant according to the collision severity. For moderate frontal collisions the air bags deploy at less than full deployment which consists of stage 1 of the air bag. For more severe frontal collisions a full deployment is initiated which consists of stage 1 and stage 2 of the air bag. The current passing through the air bags ignite the material in the canister producing a rapid generation of gas and is some cases, the release of compressed gas. The gas produced from this reaction rapidly inflates the air bag. Once the air bag is inflated it quickly deflates through the air bag vent holes and/or the bag fabric. Each air bag is equipped with a shorting bar located in the connectors of the air bag. The shorting bar shorts the air bag deployment loop circuitry to prevent unwanted deployment of the air bag when it is disconnected.

Seat Belt Pretensioners (Anchor and Retractor)

The seat belt pretensioners (driver and passenger) consist of a housing, seat belt retractor (located in the

B-pillar), seat belt anchor (located on the floor), seat belt webbing, an initiator, and a canister of gas generating materials. To view the locations of the seat belt pretentioners refer to Master Electrical Component List . The initiator is part of the seat belt pretensioner deployment loop. When the vehicle is involved in a collision of sufficient force, the SDM causes current to flow through the seat belt deployment loops to the initiator. Current passing through the initiator ignites the material in the canister producing a rapid generation of gas. The gas produced from this reaction deploys the seat belt pretensioners which removes all of the slack in the seat belts. Depending on the severity of the collision, the seat belt pretensioners may deploy without the frontal air bags deploying, or they will deploy immediately before the frontal air bags deploy. Each seat belt pretensioner is equipped with a shorting bar that is located in the connector of the seat belt pretensioner. The shorting bar shorts the seat belt pretensioner circuitry to prevent unwanted deployment of the seat belt pretensioner when the connector is disconnected.

Impact Sensors

There are multiple impact sensors which may be located in the front of the vehicle, in the front doors or on the B-pillar, and on the C-pillar depending on the vehicle configuration. To view the locations of the impact sensors refer to Master Electrical Component List . The front of vehicle, B-pillar, and C-pillar impact sensors contain a sensing device which monitors vehicle acceleration to detect collisions that are severe enough to warrant air bag deployment. The front door impact sensors contain a sensing device which monitors the door cavity air pressure change to detect side collisions that are severe enough to warrant air bag deployment. It is important when working on components in the door to make sure any items which have a sealing impact on the door (water deflector, exterior door handle, speaker, door harness grommet, or sealing strip) are securely fastened when reinstalled. The impact sensors are not part of the deployment loop, but instead provide input to the Inflatable Restraint Sensing and Diagnostic Module (SDM). The Inflatable Restraint Sensing and Diagnostic Module contains a microprocessor that performs calculations using the measured inputs from acceleration and pressure sensors. When the generated calculations exceed the stored value, the Inflatable Restraint Sensing and Diagnostic Module will cause current to flow through the deployment loops deploying the appropriate air bags.

Passenger Presence Detection System and Air Bag Indicator (Passenger)

NOTE: The passenger presence system (PPS) is a calibrated unit. When replacing the assembly all parts in the service kit must remain together. Do not mix any of the old parts with the new parts. After repairing or replacing the PPS, the preload test must be performed in order to function properly.

The passenger presence detection system (PPS) is used to monitor the type of occupant that is sitting in the front passenger seat and communicate the status to the inflatable restraint sensing and diagnostic module (SDM). The SDM then uses this information to determine whether to enable or suppress the deployment of the passenger instrument panel air bag. The PPS consists of an electronic control module, a sensor mat in the seat, a harness, and PASSENGER AIR BAG ON/OFF indicators. The PPS transmits and receives a low-level electric field. The measured capacitance value of this field is used to determine the type of occupant sitting in the front passenger seat. If the measured capacitance is less than a calibrated value, then the passenger presence module will send a serial data signal to the SDM to disable the passenger instrument panel air bag. If the measured capacitance is greater than a calibrated value, then the passenger presence module will send a serial data signal to the SDM to enable the passenger instrument panel air bag. The SDM will notify the customer of the enable/disable status by illuminating one of the PASSENGER AIR BAG ON/OFF indicator. PPS monitors itself for faults and will displays diagnostic trouble codes (DTCs) onthe scan tool. When a fault is detected, the passenger presence module sends out a message to the SDM. The SDM responds by sending a command message to the IPC to illuminate the AIR BAG indicator.

Seat Belt Indicators

The seat belt indicators are controlled through the inflatable restraint sensing and diagnostic module (SDM). For further information on seat belt indicators refer to Seat Belt System Description and Operation .

SPECIAL TOOLS AND EQUIPMENT

SPECIAL TOOLS

Illustration

Tool Number/

Description

Illustration

Tool Number/ Description