Diagnostic Procedure

WARNING: This page is about a different car, the 2002 Pontiac Montana, 2002 Oldsmobile Silhouette, and 2002 Chevrolet Venture. 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 and goes off, go to next step. If AIR BAG warning light does not flash 7 times and go off, 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. 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 communications circuits.
Using scan tool, request SIR DTC display. If scan tool displays history or current SIR DTC's, go to next step. If scan tool does not display any 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: SDM MALFUNCTION . 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
B0012	Passenger Stage 2 deployment loop resistance low
B0013	Passenger Stage 2 deployment loop resistance high
B0014	Passenger Stage 2 deployment loop voltage high
B0016	Passenger Stage 1 deployment loop resistance low
B0017	Passenger Stage 1 deployment loop resistance high
B0018	Passenger Stage 1 deployment loop voltage high
B0022	Driver Stage 1 deployment loop resistance low
B0024	Driver Stage 2 deployment loop voltage high
B0026	Driver Stage 2 deployment loop resistance high
B0028	Passenger side impact deployment loop resistance low
B0029	Passenger side impact deployment loop resistance high
B0030	Passenger side impact deployment loop voltage high
B0040	Driver side impact deployment loop resistance low
B0041	Driver side impact deployment resistance high
B0042	Driver Stage 2 deployment loop resistance low
B0043	Driver Stage 2 deployment loop voltage high
B0044	Driver Stage 2 deployment loop resistance high
B0045	Driver side impact deployment loop voltage high
B0051	Deployment commanded
B0053	Deployment commanded with loop malfunction
B0057	Passenger-side seat belt pretensioner deployment loop resistance low
B0058	Passenger-side seat belt pretensioner deployment loop resistance high
B0059	Passenger-side seat belt pretensioner deployment loop voltage high
B0064	Driver-side seat belt pretensioner deployment loop resistance low
B0065	Driver-side seat belt pretensioner deployment loop resistance high
B0066	Driver-side seat belt pretensioner deployment loop voltage high
B0077	Driver-side SIS valid identification message not received
B0078	Passenger-side SIS valid identification message not received
B0079	Driver-side SIS identification not correct
B0080	Driver-side SIS NOK message
B0081	Passenger-side SIS identification not correct
B0082	Passenger-side SIS NOK message
B0100	Driver-side EFS valid identification message not received
B0101	Driver-side EFS NOK message
B0102	Passenger-side EFS incorrect identification message
B0103	Passenger-side EFS valid identification message not received
B0104	Passenger-side EFS NOK message
B0105	Driver-side EFS incorrect identification message
B1000	SDM malfunction
B1001	Option configuration error