C1242

Circuit Description
The pump motor is an integral part of the Brake Pressure Modulator Valve (BPMV). The electronic brake control relay supplies power to the solenoid valves and pump motor. This voltage is referred to as the system voltage. The electronic brake control relay, located in the EBCM, is activated whenever the ignition switch is in the ON position and no faults are present. The electronic brake control relay remains engaged until the ignition switch is turned off or a failure is detected.

Conditions for Running the DTC
^ The system voltage is greater than 8.0 volts.
^ The system relay is ON.
^ The pump motor is commanded OFF.

Conditions for Setting the DTC
The voltage across the pump motor is between 1.67 and 10.16 volts for 2.0 seconds.

Action Taken When the DTC Sets
^ ABS/ETS/TCS is disabled.
^ ABS/ETS/TCS indicators are fumed on.

Conditions for Clearing the DTC
^ Condition for DTC is no longer present and scan tool clear DTC function is used.
- 100 ignition cycles have passed with no DTCs detected.

Diagnostic Aids
^ Possible causes for DTC C1242 to set are:
- The pump motor internals has a open.
- The pump motor circuit is open.

^ The pump motor is part of Brake Pressure Modulator Valve (BPMV) and is not serviceable separately.
^ The solenoid valve control relay is integral to the EBCM and is not serviceable separately.
^ It is very important that a thorough inspection of the wiring and connectors be performed. Failure to carefully and fully inspect wiring and connectors may result in misdiagnosis, causing part replacement with reappearance of the malfunction.
^ If an intermittent malfunction exists refer to Testing for Intermittent and Poor Connections.