C1215

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CIRCUIT DESCRIPTION
Ignition voltage is supplied to terminal 86 of the Electronic Brake Control Relay. The EBCM is then able to energize the pull-in coil by completing the ground circuit at terminal 2 of the EBCM. The magnetic field created closes the Electronic Brake Control Relay contacts and allows battery voltage and current to be supplied to the EBCM, which supplies power to the motors and solenoids.

CONDITIONS FOR SETTING THE DTC
DTC C1215 can be set only before the EBCM commands the relay ON. This test determines if the Electronic Brake Control Relay is energized when it should not be. This malfunction would not allow the Electronic Brake Control Relay to remove power to the ABS system. If a second malfunction were to occur that requires the Electronic Brake Control Relay to be turned OFF, that malfunction cannot be removed if the relay cannot be controlled. The malfunction must be present for three consecutive ignition cycles before the DTC is set.

ACTION TAKEN WHEN THE DTC SETS
A malfunction DTC is stored. ABS is not disabled, and the ABS indicator lamp will remain

CONDITIONS FOR CLEARING THE DTC
Conditions for the malfunction are no longer present and the scan tool CLEAR DTCs function is used. One hundred ignition switch key cycles have passed with no malfunctions detected.

DIAGNOSTIC AIDS
An intermittent malfunction is most likely 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 scan tool.

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 harness.