Seat Belt Warning Lamp Does Not Turn On
DescriptionWhen the ignition key is turned from OFF to ON the seat belt warning lamp should illuminate. If no malfunction is detected and the driver's seat belt is fastened it should go off after about 7 seconds. The seat belt warning lamp is illuminated by power supply from a fuse in the fuse panel and a ground from the air bag diagnosis sensor unit. An out of order air bag diagnosis sensor unit may cause the seat belt warning lamp to remain ON or not turn ON at all.
CAUTION: Do not use electrical test equipment on any circuit related to the SRS unless instructed to in the service procedures. Spiral cable and wiring harnesses can be identified by yellow harness connector (and with yellow harness protector or yellow insulation tape before the harness connectors). Do not attempt to repair, splice or modify the SRS wiring harness. If the harness is damaged, replace it with a new one. Always mount the air bag diagnosis sensor unit with the forward mark to the front. Replace previously used special bolts and ground bolt with new ones. Keep ground connections clean.
Possible Cause
- Power Supply
- Seat Belt Warning Lamp
- Harness or Harness Connections
- Air Bag Diagnosis Sensor Unit
- Combination Meter
CAUTION: Before servicing the SRS system turn the ignition key OFF, disconnect both battery cables and wait at least 3 minutes.
NOTE: Perform the following repair procedures in order. After each item is completed recheck the warning lamp operation. If the malfunction is still present proceed to the next item. When the malfunction is eliminated further repair is not needed.