A017

Circuit Description
Ignition voltage is supplied through terminal "1" of the ABS enable relay. The EBCM then is able to energize the pull-in coil by completing the ground circuit at pin "22" of the EBCM. The magnetic field created closes the ABS enable relay contacts and allows battery voltage and current to be supplied to the EBCM. which supplies power to the motors and solenoids.

Failure Condition
DTC A017 can be set before the EBCM commands the ABS enable relay on. This test determines if the relay is energized when it should not he. This malfunction would not allow the ABS enable relay to remove power to the ABS. if a second malfunction were to occur that requires the relay to be tuned off that malfunction can not be removed if the relay can not be controlled.

Action Taken
A DTC A017 is stored. ABS is not disabled. however the "ABS" indicator flashes to indicated that a malfunction exists.

Test Description
Number(s) below refer to circled number(s) on the diagnostic chart.
1. This step indicates if the EBCM is capable of controlling the ABS enable relay as commanded.
2. This checks to ensure the ABS enable relay or control CKT 879 are not shorted to ground.
3. This step ensures DTC was not set due to a poor connection.

Diagnostic Aids
An "intermittent" malfunction may be caused by a poor connection, rubbed through wire insulation or a wire that is broken inside the insulation.

The frequency of the malfunction can be checked by using the enhanced diagnostic function of the TECH 1 as described in "Enhanced Diagnostics."

Any circuitry that is suspected of causing the intermittent complaint should be thoroughly checked for backed out terminals, improper mating, broken locks, improperly formed or damaged terminals, poor terminal-to-wiring connections or physical damage to the wiring hamess.