Code A015 - Enable Relay Contacts Shorted To Battery: Notes

Ignition voltage is supplied through terminal No. A2 of ABS enable relay. EBCM energizes pull-in coil by completing ground circuit at pin No. 22 of EBCM. The magnetic field created will close enable relay contacts to supply battery voltage to Electro-Mechanical Brake (EMB) and EBCM, providing power to motors and solenoids.

This test determines if enable relay is energized when required. Fault Code A015 prevents enable relay from removing power from ABS system. If a second fault occurs and turns enable relay off, fault cannot be removed if relay cannot be controlled.

1. This step determines if EBCM is capable of controlling enable relay.
2. This step checks for short to battery in circuit No. 850 (Red/White wire).
3. This step checks if EBCM and circuit No. 879 (Purple/White wire) are shorted to ground. A short to ground in either circuit causes enable relay to be continuously energized.