Code A018, Enable Relay Coil Circuit Shorted To Battery: Notes

Ignition voltage is supplied through terminal No. 5 of enable relay. EBCM energizes enable relay pull-in coil by completing ground circuit at EBCM terminal No. 22. The magnetic field created will close enable relay contacts to supply battery voltage to EBCM, providing power to motors and solenoids.

This code checks availability of voltage and current to motors and solenoids. Code A018 will disable ABS function.

1. Determines if EBCM is capable of controlling enable relay.
2. Checks if voltage is present at enable relay connector terminal No. 2 with enable relay removed. If voltage is present, circuit No. 879 (Purple/White wire) is shorted to battery.
3. Checks for open circuit in EBCM quad driver.