Diagnostic Procedure
WARNING: This page is about a different car, the 2003 Buick Regal and 2003 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
- Observe AIR BAG warning light when turning ignition on. If AIR BAG warning light flashes 7 times, go to next step. If AIR BAG warning light does not flash 7 times, inspect vehicle for damage to wiring system, visible body damage, faulty or intermittent electrical connections or addition of aftermarket devices which could affect SIR operation. Diagnose AIR BAG warning light malfunction. See AIR BAG WARNING LIGHT CIRCUIT MALFUNCTION .
- Install scan tool to Data Link Connector (DLC), located under left side of instrument panel, to right of steering column. If scan tool powers up, go to next step. If scan tool does not power up, inspect and repair data link communication circuits.
- If scan tool communicates with SDM, go to next step. If scan tool does not communicate with SDM, inspect and repair data link communication circuits.
- Select SIR DTC function on scan tool. If scan tool displays history or current SIR DTC's, go to next step. If scan tool does not display any history or current SIR DTC's, system is okay.
- If scan tool displays any DTC's that begin with "U", inspect and repair applicable data link communication circuits and components. If no DTC's are displayed that begin with "U", go to next step.
- If scan tool displays DTC B1000, go to DTC B1000 . If scan tool displays other DTC's, diagnose and repair applicable SIR DTC's. See DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION table.
DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| Trouble Code | Possible Cause |
|---|---|
| B0016 | Passenger deployment loop resistance low |
| B0017 | Passenger deployment loop high |
| B0018 | Passenger deployment loop short to ground or voltage |
| B0022 | Driver deployment loop resistance low |
| B0024 | Driver deployment loop short to ground or voltage |
| B0026 | Driver deployment loop resistance high |
| B0040 | Driver side impact deployment loop resistance low |
| B0041 | Driver side impact deployment resistance high |
| B0045 | Driver side impact deployment loop short to ground or voltage |
| B0051 | Deployment commanded |
| B0053 | Deployment commanded with loop malfunction |
| B0077 | Driver SIS valid identification message not received |
| B0079 | Driver SIS identification not correct |
| B0080 | Driver SIS NOK message |
| B1000 | SDM malfunction |
| B1001 | Option configuration error |