Air Bag Systems: Service Precautions

These diagnostic procedures will help you in order to find and repair SIR system malfunctions. This service category also contains information for repairing SIR system malfunctions. For best results, use the diagnostic tables, and follow the sequence listed below:

Important: All SIR diagnostics must begin with the SIR diagnostic system check.

1. Perform the SIR diagnostic system check. The SIR diagnostic system check determines the following items:

^ The proper AIR BAG warning lamp operation.

^ The ability of the SDM in order to communicate through the Data Link Connector (DLC).

^ The existence of the SIR diagnostic trouble codes (DTC).

2. Refer to the diagnostic table as directed by the SIR diagnostic system check. The diagnostic tables will help enable you in order to diagnose any SIR system malfunction. Bypassing these procedures may result in the following conditions:

^ Extended diagnostic time

^ Incorrect diagnosis

^ Incorrect parts replacement

3. Repeat the SIR diagnostic system check after you perform any repair or diagnostic procedures. This will verify that you correctly performed the repair. This will also ensure that no other malfunctions exist.