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• When Monitored: • Set Condition: Possible Causes 5-VOLT SUPPLY CIRCUIT OPEN BCM - OIL PRESSURE SENSOR SIGNAL CIRCUIT SHORTED TO VOLTAGE BCM - OIL PRESSURE SENSOR SIGNAL SHORT TO GROUND MECHANICAL PROBLEM OIL PRESSURE SENSOR FAILURE OIL PRESSURE SENSOR SIGNAL CIRCUIT OPEN OIL PRESSURE SENSOR SIGNAL CIRCUIT SHORTED TO GROUND OIL PRESSURE SENSOR SIGNAL CIRCUIT SHORTED TO SENSOR GROUND OIL PRESSURE SENSOR SIGNAL CIRCUIT SHORTED TO VOLTAGE SENSOR GROUND CIRCUIT OPEN INTERMITTENT CONDITION Diagnostic Test 1. CHECKING FOR CURRENT DTC NOTE: If DTC P0641 or P0651 is present with this DTC, diagnose DTCs P0641 and P0651 before diagnosing NOTE: If the ECM detects and stores a DTC, the ECM also stores the engine/vehicle operating conditions NOTE: Before erasing stored DTCs, record these conditions. Attempting to duplicate these conditions may With the scan tool, erase ECM DTCs. Start the engine several times, letting the engine run for at least 30 seconds at a time. With the scan tool, read ECM DTCs. Did this DTC set again? Yes >> Go To 2 No >> Refer to the *CHECKING FOR AN INTERMITTENT DTC Diagnostic Procedure. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING) 2. MECHANICAL PROBLEM Refer to the Service Information and perform the Oil Pressure Test. Is the oil pressure within specification? Yes >> Go To 3 No >> Repair as necessary. Perform the ECM Verification Test Ver. 1 (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING). 9 - 1018 ENGINE DIESEL DIAG KJ |