C0256
DTC C0226-C0256
Circuit Description
The solenoid valves are part of the brake pressure modulator valve (BPMV). The BPMV turns ON and OFF the solenoid valves as deemed necessary to modulate hydraulic pressure to the wheel brakes during an ABS stop.
DTC Descriptors
This diagnostic procedure supports the following DTCs:
* DTC C0226 Right Front Solenoid Circuit Malfunction
* DTC C0236 Left Front Solenoid Circuit Malfunction
* DTC C0246 Right Rear Solenoid Circuit Malfunction
* DTC C0256 Left Rear Solenoid Circuit Malfunction
Conditions for Running the DTC
DTCs C0226-C0256 can be set anytime the ignition switch is in the ON position.
Conditions for Setting the DTC
The electronic brake control module (EBCM) detects one of the following conditions in the solenoid circuitry:
* An open
* A short to ground
* A short to voltage
Action Taken When the DTC Sets
* The ABS is disabled.
* The ABS warning indicator turns ON.
Conditions for Clearing the DTC
The condition responsible for setting the DTC no longer exists and the scan tool Clear DTCs function is used.
Diagnostic Aids
Thoroughly inspect the wiring and the connectors. An incomplete inspection of the wiring and the connectors may result in a misdiagnosis, causing a part replacement with the reappearance of the malfunction.
The following are possible causes of the malfunction:
* An open, high resistance, or a short to ground in the battery positive voltage circuits
* An open or high resistance in the solenoid ground circuit
* An internal EBCM malfunction
If an intermittent malfunction exists, refer to Testing for Intermittent Conditions and Poor Connections. Component Tests and General Diagnostics
Test Description
The number below refers to step number on the diagnostic table.
2. This step determines if the DTC is current.
