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P0521-ENGINE OIL PRESSURE SENSOR PERFORMANCE (CONTINUED) For the Engine System Schematic circuit diagram (Refer to 9 - ENGINE - SCHEMATICS AND DIAGRAMS). For a complete wiring diagram Refer to Section 8W. • When Monitored: • Set Condition: Possible Causes ENGINE OIL/ENGINE MECHANICAL (G6) ENGINE OIL PRESSURE SENSOR SIGNAL CIRCUIT SHORTED TO BATTERY VOLTAGE RESISTANCE (G6) ENGINE OIL PRESSURE SENSOR SIGNAL CIRCUIT (G6) ENGINE OIL PRESSURE SENSOR SIGNAL CIRCUIT SHORTED TO GROUND RESISTANCE IN (F855) 5-VOLT SUPPLY CIRCUIT (F855) 5-VOLT SUPPLY CIRCUIT SHORTED TO GROUND RESISTANCE IN THE (K900) SENSOR RETURN CIRCUIT ENGINE OIL PRESSURE SENSOR PCM Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE - Diagnostic Test 1. ACTIVE DTC NOTE: Make sure that the engine oil is at the proper level. Also, check the customers oil change history to With a scan tool, read DTCs. Is the DTC active at this time? Yes >> Go To 2 No >> Refer to the INTERMITTENT CONDITION Diagnostic Procedure. Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) 9 - 568 ENGINE ELECTRICAL DIAGNOSTICS WK |