Seat Belt Indicator/Chime Always On
- If seat belt diagnostic system check has been performed, go to next step. If seat belt diagnostic system check has not been performed, go to SEAT BELT DIAGNOSTIC SYSTEM CHECK
under SELF-DIAGNOSTIC SYSTEM.
- Connect scan tool to Data Link Connector (DLC). See Figure
. Turn ignition on. Select Inflatable Restraint Sensing And Diagnostic Module (SDM) data list. Monitor DRIVER SEAT BELT status. Buckle driver's seat belt. If DRIVER SEAT BELT status is BUCKLED, go to next step. If DRIVER SEAT BELT status is not BUCKLED, go to step 4
.
- Turn ignition off and back on. This will activate bulb check. Monitor seat belt indicator on Instrument Panel Cluster (IPC) during bulb check. If seat belt indicator illuminates during the bulb check and then turns off, check for intermittent or poor connections at IPC. If seat belt indicator illuminates during the bulb check and does not turn off, go to step 10
.
- Turn ignition off. Unbuckle driver's seat belt. Disconnect driver seat belt switch connector located at base of seat belt buckle at floor. Connect a 3-amp fused jumper between seat belt switch connector terminals. Turn ignition on. Monitor DRIVER SEAT BELT status. If DRIVER SEAT BELT status is not BUCKLED, go to next step. If DRIVER SEAT BELT status is BUCKLED, go to step 8
.
- Check for open or high resistance in Black wire between seat belt switch connector terminal "A" and ground G302. See Figure
. If circuit is okay, go to next step. If faulty circuit is found and repaired, go to step 12
.
- Check for open, short to voltage or high resistance in Black/White wire between seat belt switch connector terminal "B" and SDM connector terminal A15. See Fig 1
. If circuit is okay, go to next step. If faulty circuit is found and repaired, go to step 12
.
- Check for poor connections at SDM connector. See Fig 2
. If connections are okay, go to step 9
. If faulty connections are found and repaired, go to step 12
.
- Check for poor connections at driver seat belt switch. If connections are okay, go to step 11
. If faulty connections are found and repaired, go to step 12
.
- Replace SDM. See appropriate AIR BAG RESTRAINT SYSTEMS article. After repairs, go to step 12
.
- Replace Instrument Panel Cluster (IPC). See INSTRUMENT PANEL CLUSTER
under REMOVAL & INSTALLATION. After repairs, go to step 12
.
- Replace driver seat belt switch. See SEAT BELT SWITCH
under REMOVAL & INSTALLATION. After repairs, go to next step.
- Recheck seat belt indicator operation. If seat belt indicator operates properly, repair is complete. If seat belt indicator does not operate properly, go to step 2
.
Courtesy of GENERAL MOTORS CORP.
Courtesy of GENERAL MOTORS CORP.