Symptom Troubleshooting

Symptom Troubleshooting: ABS indicator and brake system indicator do not go off

ABS indicator and brake system indicator do not go off

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

2. Check the No. 11 (7.5 A) fuse in the under-dash fuse/relay box.

Is the fuse blown?
YES - Go to step 3.

NO - Reinstall the checked fuse, then go to step 8.


3. Disconnect the ABS modulator-control unit 25P connector. Service and Repair

4. Check for continuity between ABS modulator-control unit 25P connector terminal No. 16 and body ground.

Is there continuity?
YES - Repair short to body ground in the wire between the No. 11 (7.5 A) fuse in the under-dash fuse/relay box and the ABS modulator-control unit.

NO - Install a new No. 11 (7.5 A) fuse in the under-dash fuse/relay box, then go to step 5.






5. Reconnect the ABS modulator-control unit 25P connector.

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

7. Check the ABS indicator and brake system indicator for several seconds when the ignition switch is turned to ON (II).

Do the indicators come on then go off?
YES - Replace the ABS modulator-control unit. Service and Repair

NO - The system is OK at this time.


8. Disconnect the ABS modulator-control unit 25P connector. Service and Repair

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

10. Measure the voltage between ABS modulator-control unit 25P connector terminal No. 16 and body ground.

Is there battery voltage?
YES - Go to step 11.

NO - Repair open in the wire between the No. 11 (7.5 A) fuse in the under-dash fuse/relay box and the ABS modulator-control unit.






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

12. Check for continuity between ABS modulator-control unit 25P connector terminal No. 24 and body ground.

Is there continuity?
YES - Go to step 13.

NO - Repair open in the wire between the ABS modulator-control unit and body ground (G202).






13. Disconnect the gauge control module 32P connector. Service and Repair

14. Check for continuity between the ABS modulator-control unit 25P connector terminal and gauge control module 32P connector terminal (see table).





Is there continuity?
YES - Check for loose terminals in the ABS modulator-control unit 25P connector. Clean terminal G202 and recheck. If necessary, substitute a known-good ABS modulator-control unit, Service and Repair and reset.

NO - Repair open in the wire between the gauge control module and the ABS modulator-control unit.