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Symptom List: P1222-ACC PEDAL POSITION SENSOR 1 CKT PLAUSIBILITY Test Note: All symptoms listed above are diagnosed using the same tests. The title for the tests will be P1222-ACC PEDAL POSITION POSSIBLE CAUSES ACCELERATOR PEDAL POSITION SENSOR ECM - APP SENSOR 1 5-VOLT SUPPLY CIRCUIT SENSOR GROUND OPEN (APP SENSOR) INTERMITTENT CONDITION APP SENSOR 5-VOLT SUPPLY CIRCUIT OPEN APP SENSOR SIGNAL CIRCUIT OPEN APP SENSOR 5-VOLT SUPPLY CIRCUIT SHORTED TO SENSOR GROUND APP SENSOR SIGNAL CIRCUIT SHORTED TO GROUND APP SENSOR 5-VOLT SUPPLY CIRCUIT SHORTED TO GROUND VERIFY APP SENSOR OPERATION APP SENSOR SIGNAL CIRCUIT SHORTED TO THE SENSOR GROUND CIRCUIT APP SENSOR 5-VOLT SUPPLY CIRCUIT SHORTED TO VOLTAGE ECM - SENSOR GROUND OPEN APP SENSOR CIRCUIT SHORTED TO VOLTAGE APP SENSOR GROUND CIRCUIT SHORTED TO VOLTAGE ECM - APP SENSOR SIGNAL CIRCUIT 73 DRIVEABILITY - DIESEL |