C1242

CIRCUIT DESCRIPTION
The Brake Pressure Modulator Valve (BPMV) pump motor ground is supplied through a ground stud on the pump motor to a good ground.

CONDITIONS FOR SETTING THE DTC
Diagnostic Trouble Code (DTC) C1242 can be set when the pump relay is commanded off. A malfunction exists if the pump motor ground CKT 1250 resistance is greater than 6900 ohms.

ACTION TAKEN WHEN THE DTC SETS
ABS/TCS/Active Handling (if equipped with RPO JL4) are disabled.
^ Indicators that turn on:
- ABS indicator
- Car Icon (TCS indicator)
^ Messages displayed on the Driver Information Center (DIC):
- Service ABS
- Service Traction System
- Service Active HNDLG (if equipped with Active Handling RPO JL4)

CONDITIONS FOR CLEARING THE DTC
^ Condition for Diagnostic Trouble Code (DTC) is no longer present and Scan tool clear DTC function is used.
^ Fifty ignition cycles have passed with no DTCs detected.

DIAGNOSTIC AIDS
^ 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.
^ An intermittent malfunction can be caused by poor connections, broken insulation, or a wire that is broken inside the insulation.
^ If an intermittent malfunction exists refer to Testing for Electrical Intermittents in Diagnostic Aids.

TEST DESCRIPTION
The numbers below refer to step numbers on the diagnostic table.
2. Checks for good pump motor ground.
4. Checks for good pump motor ground through the Brake Pressure Modulator Valve (BPMV).





DTC C1242 BPMV PUMP MOTOR GROUND CIRCUIT OPEN