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P0533-A/C PRESSURE SENSOR CIRCUIT HIGH (CONTINUED) For the Engine circuit diagram (Refer to 9 - ENGINE - SCHEMATICS AND DIAGRAMS). For a complete wiring diagram Refer to Section 8W. • When Monitored: • Set Condition: Possible Causes (C18) A/C PRESSURE SIGNAL CIRCUIT SHORTED TO BATTERY VOLTAGE (C18) A/C PRESSURE SIGNAL CIRCUIT OPEN (C18) A/C PRESSURE SIGNAL CIRCUIT SHORTED TO THE (T103) 5-VOLT SUPPLY CIRCUIT (G180) SENSOR RETURN CIRCUIT OPEN A/C PRESSURE TRANSDUCER FCM Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE - Diagnostic Test 1. A/C PRESSURE TRANSDUCER VOLTAGE ABOVE 4.9 VOLTS NOTE: Make sure the A/C refrigerant System is properly charged per Service Information. With a scan tool, read the A/C Pressure Sensor voltage. Is the voltage above 4.9 volts? Yes >> Go To 2 No >> Refer to the INTERMITTENT CONDITION Diagnostic Procedure. Perform POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) 9 - 522 ENGINE ELECTRICAL DIAGNOSTICS ND |