| 1. | With the parking brake applied, turn ignition switch ON (II), and watch the brake system indicator. Does the brake system indicator come on? YES - Replace the gauge control module.n NO - Go to 2. |
| 2. | Turn the ignition switch OFF then ON (II) again. Does the ABS indicator come on? YES - Replace the gauge control module.n NO - Repair open in the indicator power source circuit, If necessary, substitute a known-good gauge control module, and recheck.n |
| 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 ABS control unit 25P connector. |
| 7. | Turn the ignition switch ON (II), and check the brake system indicator. Does the brake system indicator go off? YES - Replace the ABS modulator-control unit.n NO - Go to 8. |
| 8. | Turn the ignition switch OFF. |
| 9. | Remove the gauge control module. |
| 10. | Disconnect gauge control module connector B (30P). |
| 11. | Check for continuity between the ABS control unit 25P connector terminal No. 21 and body ground. Is there continuity? YES - Repair short to body ground in the wire between the gauge control module and the ABS control unit.n NO - Check for a short to body ground in the brake system indicator circuit.n |