C1268

DTC C1261-C1274





Circuit Description
The system relay is energized when the ignition is ON. The system relay supplies voltage to the valve solenoids and the pump motor. This voltage is referred to as the system voltage. The EBCM microprocessor activates the valve solenoids by grounding the control circuit.

Conditions for Running the DTC
^ The system voltage is greater than 8 volts.
^ The ignition voltage is greater than 9 volts.

Conditions for Setting the DTC
The commanded state of the driver and the actual state of the control circuit do not match for 0.03 seconds.

Action Taken When the DTC Sets
If equipped, the following actions occur:
^ The EBCM disables the ABS for the duration of the ignition cycle.
^ The EBCM disables the TCS (w/NW9) for the duration of the ignition cycle.
^ The DRP does not function optimally, or with ignition voltage less than 8.5 volts, the EBCM disables the DRP for the duration of the ignition cycle.
^ The ABS indicator turns ON.
^ The Traction Off indicator turns ON.

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 solenoid valve circuit is internal to the EBCM. The solenoid valve circuit is not diagnosable external to the EBCM. The DTC sets when there is a malfunction in the solenoid circuit internal to the EBCM.

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