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

Symptom Troubleshooting: 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 to ON (II), and watch the brake system indicator.

Does the brake system indicator come on?
YES - The brake system indicator is OK at this time.

NO - Go to step 2.


2. Turn the ignition switch to LOCK (0), then turn it to ON (II) again.

Does the ABS indicator come on for several seconds?
YES - Go to step 3.

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 to LOCK (0).

4. Release the parking brake.

5. Turn the ignition switch to ON (II).

Does the brake system indicator come on for several seconds?
YES - Go to step 6.

NO - Check for loose terminals or poor connections at the gauge control module connectors. If connections are good, replace the gauge control module, and recheck.


6. Apply the parking brake.

Does the brake system indicator come on?
YES - The system is OK at this time. Refer to intermittent failures. Initial Inspection and Diagnostic Overview

NO - Go to step 7.


7. Turn the ignition switch to LOCK (0).

8. Disconnect the parking brake switch connector. Testing and Inspection

9. Turn the ignition switch to 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. Testing and Inspection

NO - Go to step 11.


11. Turn the ignition switch to LOCK (0).

12. Remove the gauge control module. Service and Repair Leave the gauge control module connectors connected.

13. Connect gauge control module connector B (28P) terminal No. 14 to body ground with a jumper wire.

14. Turn the ignition switch to 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. Service and Repair