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 electronic brake control module (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.
Conditions for Setting the DTC
The system voltage is less than 8 volts for 0.23 seconds.
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 DRP does not function optimally.
|
• | The ABS indicator turns ON.
|
• | The Traction Control and Active Handling indicator turns ON.
|
• | The DIC displays the following messages:
|
- | Service Traction System
|
- | Service Active Handling
|
Conditions for Clearing the DTC
- The condition for the DTC is no longer present and the DTC is cleared with a scan tool.
- 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.
Determines whether the DTC is current.
