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Home >> GMC >> 2002 >> Jimmy 2D Utility, Part Time, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 1415 (Antilock Brake System And Traction Control System) >> Diagnostic Information and Procedures >> DTC C0298 or P0856: Requested Torque Signal Circuit >> Circuit Description >> P0856

Circuit Description: P0856

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The PCM supplies 5 volts through an internal resistor, to the EBCM on the requested torque signal circuit. The EBCM toggles this voltage to ground to create the requested torque signal at the PCM.