Inspection And Verification

AIR BAG AND SAFETY BELT PRETENSIONER SUPPLEMENTAL RESTRAINT SYSTEM (SRS) INSPECTION AND VERIFICATION

1. Verify the customer concern by checking the air bag warning indicator in the Instrument Cluster (IC). Refer to Prove Out Procedure, see Diagnostic Instructions.

2. Visually inspect for obvious signs of mechanical or electrical damage. Do not disconnect electrical connectors until directed to do so within the pinpoint test.





3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.

NOTE:Make sure to use the latest scan tool software release.
4. If the cause is not visually evident, connect the scan tool to the DLC.

NOTE:The vehicle communication module (VCM) LED prove-out confirms power and ground from the DLC are provided to the VCM.
5. If the scan tool does not communicate with the VCM:

- check the VCM connection to the vehicle.
- check the scan tool connection to the VCM.
- See - Communications Network - Troubleshooting, No Power To The Scan Tool, to diagnose no communication with the scan tool.

6. If the scan tool does not communicate with the vehicle:

- verify the ignition key is in the ON position.
- verify the scan tool operation with a known good vehicle.
- See - Communications Network - Troubleshooting, to diagnose no response from the PCM.

7. Carry out the network test.

- If the scan tool responds with no communication for one or more modules, see - Communications Network - Troubleshooting.
- If the network test passes, retrieve and record on-demand and continuous memory DTCs from the RCM and occupant classification sensor (OCS) module.

8. If the DTCs retrieved are related to the concern, see - Supplemental Restraint System (SRS), Restraints Control Module (RCM) - DTC Chart or - Supplemental Restraint System (SRS), Occupant Classification System Module (OCSM) - DTC Chart. For all other DTCs, see - Diagnostic Trouble Code (DTC) Chart - B, C And U Codes.

9. If no DTCs related to the concern are retrieved, see - Symptom Related Diagnostic Procedures.