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• When Monitored: • Set Condition: Possible Causes INTERMITTENT DTC (F856) 5 VOLT SUPPLY CIRCUIT OPEN OR HIGH RESISTANCE (K23) APP SIGNAL 1 CIRCUIT OPEN OR HIGH RESISTANCE (K167) APP SENSOR GROUND 1 CIRCUIT OPEN OR HIGH RESISTANCE (K858) 5 VOLT SUPPLY CIRCUIT OPEN OR HIGH RESISTANCE (K29) APP SIGNAL 2 CIRCUIT OPEN OR HIGH RESISTANCE (K400) APP SENSOR GROUND 2 CIRCUIT OPEN OR HIGH RESISTANCE ACCELERATOR PEDAL POSITION SENSOR POWERTRAIN CONTROL MODULE (PCM) Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE - Diagnostic Test 1. DTC IS ACTIVE Ignition on, engine not running. NOTE: Diagnose and repair any APPS, system voltage, or sensor supply voltage DTCs before continuing Is the status Active for this DTC? Yes >> Go to 2 No >> Refer to the *CHECKING FOR AN INTERMITTENT DTC Diagnostic Procedure. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING) PM ENGINE ELECTRICAL DIAGNOSTICS - GPEC 9 - 815 |