Brake System Indicator Does Not GO Off, and No DTCs Are Stored
'03-05 Models: Brake System indicator does not go off, and no DTCs are stored1. Release the parking brake.
2. Start the engine.
Does the brake system indicator go off?
YES- The system is OK at this time.
NO- Go to step 3.
3. Check the brake fluid level.
Is the level OK?
YES- Go to step 4.
NO- Inspect the brake system for fluid leaks. If no leaks are found, replace the worn brake pads/shoes.
4. Check the ABS indicator.
Does the ABS indicator stay on?
YES- Read the ABS DTC, and do applicable troubleshooting for the DTC.
NO- Go to step 5.
5. Turn the ignition switch OFF.
6. Disconnect the ABS control unit 31P connector.
7. Connect the ABS control unit 31P connector terminal No. 21 and body ground with a jumper wire.
8. Start the engine.
9. Check the brake system indicator.
Does the brake system indicator go off?
YES- Replace the ABS modulator-control unit.
NO- Go to step 10.
10. Turn the ignition switch OFF.
11. Connect the multiplex control unit 13P connector terminal No. 1 and body ground with a jumper wire.
12. Start the engine.
13. Check the brake system indicator.
Does the brake system indicator go off?
YES- Repair open in the wire between the multiplex control unit and the ABS control unit.
NO- Go to multiplex control system troubleshooting.