ABS Indicator Always On

ABS Indicator Always On

Circuit Description

Battery voltage is supplied to the antilock brake system (ABS) warning lamp with the ignition switch in the ON or START position. The warning lamp should be activated only by the ABS control module internally supplying ground to terminal 20.

This procedure checks for a short to ground in the wiring or a defective electronic brake control module (EBCM).

Conditions for Setting the DTC

* There is a short to ground in the circuit between the cluster terminal A13 and the electronic brake control (EBCM) terminal 20.
* The EBCM is faulty.

Test Description

The numbers below refer to the step numbers on the diagnostic table.
3. This step determines whether the EBCM is faulty.
5. This begins a search for a short to ground in the circuit between the ABS indicator lamp and the EBCM.