C1251

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Schematic Diagram:

CIRCUIT DESCRIPTION
Voltage is applied to the normally open inlet valves whenever the main relay is energized. An inlet valve closes when the Electronic Brake/Traction Control Module (EBCM/EBTCM) supplies a ground path at the inlet valve control terminal. The EBCM/EBTCM closes the inlet valve for short periods to maintain (hold) or reduce pressure at the RR wheel.

CONDITIONS FOR SETTING THE DTC
DTC C1251 sets when the EBCM/EBTCM detects an open or short to ground in the RR inlet valve circuit.

ACTION TAKEN WHEN THE DTC SETS
A malfunction DTC is stored, ABS is disabled and the ANTILOCK indicator lamp is turned ON.

CONDITIONS FOR CLEARING THE DTC
^ Conditions for the malfunction are no longer present and scan tool clear DTCs function is used.

^ 100 ignition switch key cycles have passed with no malfunctions detected.

DIAGNOSTIC AIDS
It is very important that a thorough inspection of the wiring and connectors be performed. Failure to carefully inspect wiring may result in misdiagnosis, causing part replacement with reappearance of the malfunction.