C1214

DTC C1214





Test 1-3





Test 4-9

Circuit Description
The pump motor is grounded through the ground stud on the BPMV. The EBCM controls the pump motor by energizing the pump motor relay. The pump motor relay then supplies voltage to the pump motor. The pump serves 2 purposes:
^ Transfers brake fluid from the brake calipers to the master cylinder reservoir during pressure decrease events.
^ Transfers brake fluid from the master cylinder reservoir to the brake calipers during pressure increase events.

Conditions for Running the DTC
^ The ignition voltage is greater than 10.5 volts.
^ The relay is commanded ON.

Conditions for Setting the DTC
The relay voltage is less than 8 volts.

Action Taken When the DTC Sets
If equipped, the following actions occur:
^ The EBCM disables the ABS/TCS/VSES for the duration of the ignition cycle.
^ The ABS indicator turns ON.
^ The Traction Control indicator turns ON.
^ The DIC displays the Service Stability System message.

Conditions for Clearing the DTC
^ The condition for the DTC is no longer present (the DTC is not current) and you used the scan tool Clear DTC function.
^ The condition for the DTC is no longer present (the DTC is not current) and you used the On-Board Diagnostics Clear DTC function.
^ The EBCM automatically clears the history DTC when a current DTC is not detected in 50 consecutive drive cycles.

Diagnostic Aids
The relays are integral to the EBCM. The relays are not serviceable.

Test Description
The number below refers to step number on the diagnostic table.
5. Tests for an internal short in the BPMV.