Operation CHARM: Car repair manuals for everyone.

Brake System Indicator Does Not GO Off, and No DTCs Are Stored

Brake system indicator does not go off, and no DTCs are stored
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.
NO-Go to step 3.
3. Check the brake fluid level.
Is the lever OK?
YES-Go to step 4.
NO-Inspect the brake system for leaks. If no leaks are found, replace the worn brake pads or shoes, and recheck.
4. Check the ABS indicator.
Does the ABS indicator stay on?
YES-Read the ABS DTC and do the 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. Turn the ignition switch ON (II).
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. Turn the ignition switch ON (II).
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.