C1256

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(Part 2 Of 2):

Schematic Diagram:

CIRCUIT DESCRIPTION
The normally closed outlet valves operate similarly to the inlet valves, except that when the Electronic Brake/Traction Control Module (EBCM/EBTCM) grounds an outlet valve, the valve opens instead of closes. The EBCM/EBTCM opens the outlet valve for short periods to reduce pressure at the LR wheel.

CONDITIONS FOR SETTING THE DTC
DTC C1256 sets when the EBCM/EBTCM detects an open or short to ground in the LR outlet 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.