Diesel Data: Automotive Repair

Seat Belt Indicator Inoperative

*SEAT BELT INDICATOR INOPERATIVE


Seat Belt Indicator Inoperative:




POSSIBLE CAUSES
- Indicator circuit open
- Indicator lamp
- Driver seat belt switch
- Instrument cluster

DIAGNOSTIC TEST

1. SEAT BELT INDICATOR SWITCH





Turn the ignition off.
Disconnect the Seat Belt Indicator Switch harness connector.

NOTE: Check connectors - Clean/repair as necessary.

Connect a jumper wire between cavity 1 and cavity 2 of the Driver Seat Belt Switch harness connector.
Turn the ignition on.

Q: Is the Seat Belt Indicator Lamp on?

YES: Replace the Seat Belt Indicator Switch.
Perform BODY VERIFICATION TEST. Body Verification Test
NO: Go to 2

2. SEAT BELT INDICATOR CIRCUIT





Turn the ignition off.
Disconnect the Instrument Cluster C2 harness connector.

NOTE: Check connectors - Clean/repair as necessary.

Measure the resistance between ground and the Seat Belt Indicator circuit.

Q: Is the resistance below 5.0 ohms?

YES: Check the Seat Belt Indicator lamp. If the lamp is OK, replace the Instrument Cluster.
Perform BODY VERIFICATION TEST. Body Verification Test
NO: Repair the Seat Belt Indicator circuit for an open.
Perform BODY VERIFICATION TEST. Body Verification Test