## Brake System Indicator Circuit Troubleshooting

### Brake system indicator does not come on

1. | Do the gauge assembly self-diagnosis function. Is gauge assembly OK? YES - Go to 2. NO - Replace gauge assembly.n

2. | Turn the ignition switch OFF.

3. | Disconnect the VSA control unit 46P connector.

4. | Connect the VSA control unit 46P connector terminal No. 16 and body ground with a jumper wire.

5. | Turn the ignition switch ON (II). Doest the brake system indicator come on? YES - Check for loose or poor connections in the VSA control unit 46P connector. If connections are good, replace the VSA modulator-control unit.n NO - Repair open in the wire between gauge assembly and VSA modulator-control unit.n

### Brake system indicator does not go off

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

2. | Release the parking brake. Does the brake system indicator go off after several seconds? YES - The system is OK at this time.n NO - Go to 3.

3. | Check the brake fluid level. Is the level OK? YES - Go to 4. NO - Refill the brake fluid, and recheck.n

4. | Check the ABS indicator. Does the ABS indicator stay on? YES - Read the ABS DTC, and do the applicable troubleshooting for the DTC.n NO - Go to 5.

5. | Turn the ignition switch OFF.

6. | Disconnect the VSA control unit 46P connector.

7. | Turn the ignition switch ON (II), and check the brake system indicator. Does the brake system indicator go off? YES - Replace the VSA modulator-control unit.n NO - Go to 8.

8. | Turn the ignition switch OFF.

9. | Remove the gauge assembly.

10. | Disconnect gauge assembly connector C (40P).

11. | Check for continuity between the VSA control unit 46P connector terminal No. 16 and body ground. Is there continuity? YES - Repair short to body ground in the wire between the gauge control module and the VSA modulator-control unit.n NO - Check for a short to body ground in the brake system indicator circuit.n