Seat Belt Indicator Not Operating Properly
NOTE:
After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.
- Turn the ignition off. Perform the instrument cluster self test. Press and hold the trip reset button. Turn the ignition on. If the seat belt indicator illuminated go to step 3. If the seat belt indicator did not illuminate go to the next step.
- Turn the ignition off. Remove the instrument cluster. See INSTRUMENT CLUSTER under REMOVAL & INSTALLATION in appropriate ANALOG INSTRUMENT PANELS article. Remove the inoperative indicator. See INSTRUMENT CLUSTER BULBS & LED under REMOVAL & INSTALLATION in appropriate ANALOG INSTRUMENT PANELS article. Using a DVOM, select DIODE MODE, and attach the leads across the LED. Ensure that the Red lead is on the positive of the LED. If the LED illuminated, go to the next step. If the LED did not illuminate, replace the seat belt indicator LED.
- Turn the ignition off. Disconnect the instrument cluster C1 harness connector. See Figure. Disconnect the seat belt switch harness connector. Measure the resistance of the seat belt switch sense circuit. If the resistance is below 5.0 ohms, go to the next step. If the resistance is above 5.0 ohms, repair the seat belt switch sense circuit for an open.
- Turn the ignition off. Disconnect the seat belt switch harness connector. See Fig 1. Measure the resistance between ground and the seat belt switch ground circuit. If the resistance is below 5.0 ohms, go to the next step. If the resistance is above 5.0 ohms, repair the seat belt switch ground circuit for an open.
- Turn the ignition off. Disconnect the seat belt switch harness connector. Measure the resistance of the seat belt switch between the indicator circuit pin and the ground circuit pin. If the resistance is below 5.0 ohms, replace the instrument cluster. See INSTRUMENT CLUSTER under REMOVAL & INSTALLATION in appropriate ANALOG INSTRUMENT PANELS article. If the resistance is above 5.0 ohms replace the seat belt switch.