C1214

DTC C1214





Circuit Description
The system relay is energized when the ignition is ON. The system relay supplies voltage to the solenoid valves and the pump motor. This voltage is referred to as the system voltage.
The EBCM controls each solenoid valve by grounding the solenoid.
The EBCM controls the pump motor by grounding the control circuit. 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 system relay is commanded ON.
^ For Criteria 2, one of the following conditions exists:
- The pump motor is OFF.
- During initialization, the pump motor is ON.

Conditions for Setting the DTC
One of the following conditions exists for 0.23 seconds:
Criteria 1
The system voltage is less than 8 volts.
Criteria 2
The difference between the ignition voltage and system voltage is greater than 1.9 volts.

Action Taken When the DTC Sets
^ The EBCM disables the ABS for the duration of the ignition cycle.
^ The ABS indicator turns ON.
^ The DRP does not function optimally.

Conditions for Clearing the DTC
^ The condition for the DTC is no longer present and you used the scan tool Clear DTC function.
^ The EBCM automatically clears the history DTC when a current DTC is not detected in 100 consecutive drive cycles.

Diagnostic Aids
The system relay is integral to the EBCM. The relay is not serviceable.

Test Description
The number below refers to the step number on the diagnostic table.
2. Determines whether the DTC is current.