Brake System Indicator Does Not Come ON (Check Bulb Operation With Parking Brake)

Brake system indicator does not come on (Check bulb operation with parking brake)

1. With the parking brake applied, turn the ignition switch ON (II), and watch the brake system indicator.
Does the brake system indicator come on?
YES - Go to step 3.
NO - Go to step 2.

2. Turn the ignition switch OFF then turn it ON (II) again.
Does the ABS indicator come on for several seconds?
YES - Replace the gauge control module.
NO - Repair open in the indicator power source circuit. If necessary, substitute a known-good gauge control module, and recheck.

3. Turn the ignition switch OFF.
4. Release the parking brake.
5. Turn the ignition switch ON (II).
Does the brake system indicator come on for several seconds then go off?
YES - Go to step 6.
NO - Check for loose terminals in the gauge control module connectors. If necessary, substitute a known-good gauge control module, and recheck.

6. Apply the parking brake. Does the brake system indicator come on?
YES - Intermittent failure, the system is OK at this time.
NO - Go to step 7.

7. Turn the ignition switch OFF.
8. Disconnect the parking brake switch connector.
9. Turn the ignition switch ON (II).
10. Measure the voltage between the parking brake switch connector terminal and body ground.
Is there battery voltage?
YES - Replace the parking brake switch.
NO - Go to step 11.

11. Turn the ignition switch OFF.
12. Remove the gauge control module, and leave the gauge control module connectors.
13. Connect gauge control module connector B (36P) terminal No. 5 and body ground with a jumper wire.





14. Turn the ignition switch ON (II).
Does the brake system indicator come on and stay on?
YES - Repair open in the wire between the gauge control module, and the parking brake switch.
NO - Replace the gauge control module.