## ABS Indicator Circuit Troubleshooting

### ABS indicator does not come on

1. | Turn the ignition switch OFF then ON (II) again. Does the brake system indicator come on? YES - Go to 2. NO - Repair open in the indicator power source circuit:n Blown No. 3 (7.5 A) fuse. Open in the wire between the No. 3 (7.5 A) fuse and gauge assembly. Open circuit inside the fuse box.

2. | Turn the ignition switch OFF.

3. | Disconnect the ABS control unit 25P connector.

4. | Turn the ignition switch ON (II). Does the ABS indicator come on? YES - Check for loose terminals in the ABS control unit 25P connector. If necessary, substitute a known-good ABS modulator-control unit, and recheck.n NO - Go to 5.

5. | Turn the ignition switch OFF.

6. | Remove the gauge assembly.

7. | Disconnect the gauge assembly connector C (30P).

8. | Check for continuity between the gauge assembly connector C (30P) terminal No. 28 and body ground. Is there continuity? YES - Repair short to body ground in the wire between the gauge assembly and the ABS modulator-control unit.n NO - Go to 9.

9. | Connect the gauge assembly connector C (30P), and disconnect the gauge assembly connector A (20P).

10. | Check for continuity between the gauge assembly connector A (20P) terminal No. 19 and body ground. Is there continuity? YES - Check for loose terminals in the gauge assembly connectors. If the connector is OK, replace the gauge assembly.n NO - Repair open in the wire between the gauge assembly and body ground (G502).n

### ABS indicator does not go off

1. | Disconnect the negative cable from the battery.

2. | Disconnect the ABS control unit 25P connector.

3. | Reconnect the battery cable.

4. | Turn the ignition switch ON (II).

5. | Measure the voltage between the ABS control unit 25P connector terminal No. 4 and body ground. Is there battery voltage? YES - Go to 6. NO - Repair open in the wire between the No. 25 (7.5 A) fuse and the ABS modulator-control unit.n

6. | Turn the ignition switch OFF.

7. | Check for continuity between the ABS control unit 25P connector terminal No. 8 and body ground. Is there continuity? YES - Go to 8. NO - Repair open in the wire between the ABS modulator-control unit and body ground (G202).n

8. | Turn the ignition switch ON (II).

9. | Connect ABS control unit 25P connector terminal No. 7 and body ground with a jumper wire. Does the ABS indicator go off? YES - Check for loose terminals in the ABS control unit 25P connector. If necessary, substitute a known-good ABS modulator-control unit, and recheck.n NO - Go to 10.

10. | Remove the jumper wire from the ABS control unit 25P connector.

11. | Remove the gauge assembly.

12. | Connect the gauge assembly connector C (30P) terminal No. 28 and body ground. Does the ABS indicator go off? YES - Repair open in the wire between the gauge assembly and the ABS modulator-control unit.n NO - Check for loose terminals in the gauge assembly connectors. If the connectors are OK, replace the gauge assembly.n