DTC P0533-A/C Pressure Sensor Circuit High: Notes

Fig 1: A/C Pressure Sensor Circuit - Circuit Diagram

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article.

When Monitored:
Engine running and the AC Clutch Relay energized.
Set Condition:
The A/C pressure transducer signal at the PCM goes above 4.92 volts. One trip Fault. Three good trips to turn off the MIL.

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