Air Bag Control Module: Service and Repair
INFLATABLE RESTRAINT SENSING AND DIAGNOSTIC MODULE REPLACEMENTREMOVAL PROCEDURE
CAUTION:
- 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.
- If the vehicle interior is exposed to moisture and becomes soaked up to the level of the sensing and diagnostic module (SDM), the SDM and SDM harness connector must be replaced. The SDM could be activated when powered, which could cause airbag deployment and result in personal injury.
1. Disable the SIR system. Refer to SIR Disabling and Enabling Zone 7 or SIR Disabling and Enabling Zone 9.
2. Remove the passenger front seat.
3. Remove the passenger front carpet retainer, then roll back the carpet.
4. Push the locking tab and release the connector position assurance (CPA) from the inflatable restraint sensing and diagnostic module (SDM) wiring harness connector (2).
5. Disconnect the SDM wiring harness connector (3) from the SDM (1).
6. Remove the SDM mounting fasteners (1).
7. Remove the SDM (2) from the vehicle.
INSTALLATION PROCEDURE
NOTE: Refer to Fastener Notice in Service Precautions.
1. Install the SDM (2) to the vehicle.
2. Install the SDM mounting fasteners (1).
Tighten
Tighten fasteners to 10 N.m (89 lb in).
First Repair
IMPORTANT: The following repair procedures should only be used in the event that the inflatable restraint sensing and diagnostic module (SDM) mounting studs and/or fasteners are damaged to the extent that the SDM can no longer be properly mounted.
2.1. Remove and discard the fastener.
2.2. Use a new fastener GM P/N 10156138.
NOTE: Refer to Fastener Notice in Service Precautions.
2.3. Install the SDM mounting fasteners (1).
Tighten
Tighten fasteners to 10 N.mm (89 lb in).
Second Repair
2.1. Remove and discard the fastener.
2.2. Use a larger fastener GM P/N 10267482 with washer GM P/N 11500305.
2.3. Install the SDM mounting fasteners (1).
Tighten
Tighten fasteners to 15 N.m (134 lb in).
3. Install the SDM wiring harness connector (3) to the SDM (1).
4. Install the connector position assurance (CPA) to the SDM wiring harness connector (2).
5. Position the carpet to cover the SDM then install the carpet retainer.
6. Install the passenger front seat.
IMPORTANT: The AIR BAG indicator may remain ON after the SDM has been replaced. DTC B1001 may set requiring the SDM part number to be set in multiple modules. If the indicator remains ON after enabling the SIR system, perform the diagnostic system check and follow the steps thoroughly to ensure that the SDM is set properly.
7. Enable the SIR system. Refer to SIR Disabling and Enabling Zone 7 or SIR Disabling and Enabling Zone 9.