Brake System Indicator Does Not Come On

Brake system indicator does not come on
1. With the parking brake released, 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 ON (II) again.
Does the ABS indicator come on?
YES - Go to step 12.
NO - Repair open in the indicator power source circuit.
^ Blown BACK UP LIGHT (10A) fuse.
^ Open in the wire between the BACK UP LIGHT (10A) fuse and the gauge assembly.
^ Open circuit inside the fuse box.
3. Start the engine, and apply the parking brake.
Does the brake system indicator come on?
YES - The system is OK at this time.
NO - Go to step 4.
4. Turn the ignition switch OFF.
5. Disconnect the parking brake switch connector from the switch (see step 1).
6. Turn the ignition switch ON (II).
7. Measure 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 8.
8. Turn the ignition switch OFF.
9. Remove the gauge assembly.





10. Connect the gauge assembly connector B (18P) terminal No. 4 and body ground with a jumper wire.
11. Turn the ignition switch ON (II).
Does the parking brake indicator come on?
YES - Repair open in the GRN/RED wire between the gauge assembly and the parking brake switch.
NO - Replace the printed circuit board in the gauge assembly.
12. Start the engine, and apply the parking brake.
Does the brake system indicator come on?
YES - Go to step 16.
NO - Go to step 13.
13. Turn the ignition switch OFF.
14. Remove the gauge assembly.
15. Check the brake system indicator bulb.
Is the bulb OK?
YES - Replace the printed circuit board in the gauge assembly.
NO - Replace the brake system indicator bulb.
16. Turn the ignition switch OFF.
17. Disconnect the alternator connector (4P).





18. Connect the alternator connector (4P) WHT/BLU terminal and body ground with a jumper wire.
19. Turn the ignition switch ON (II).
Does the brake system indicator come on?
YES - Replace the alternator or repair the charging system circuited
NO - Go to step 20.
20. Turn the ignition switch OFF.
21. Remove the gauge assembly.





22. Connect the gauge assembly connector A (30P) terminal No. 21 and body ground with a jumper wire
23. Turn the ignition switch ON (II).
Does the brake system indicator come on?
YES - Repair open in the WHT/BLU wire between the alternator and the gauge assembly.
NO - Replace the printed circuit board in the gauge assembly.