Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2002 Chrysler Intrepid BaseFACTORY OEM SERVICE PROCEDURE
DTC P0533: A/C Pressure Sensor High: Testing
- Start the engine. With the DRBIII®, read the A/C Pressure Sensor voltage. Is the voltage above 4.9 volts? If yes, go to next step. If no, go to step 8.
- Turn the ignition off. Disconnect the A/C Pressure Sensor harness connector. A/C pressure sensor has a Gray connector and is located on A/C discharge refrigerant line, near compressor. Disconnect the PCM harness connectors. Measure the resistance between the A/C Pressure Sensor Signal circuit and the 5-Volt Supply circuit in the A/C Pressure Sensor harness connector. Is the resistance below 100 ohms? If yes, repair the A/C Pressure Sensor Signal circuit for a short to the 5-Volt Supply circuit. If no, go to next step.
- Turn the ignition off. Reconnect PCM harness connectors. Turn ignition on, engine not running. Measure the voltage of the A/C Pressure Sensor Signal circuit in the A/C Pressure Sensor harness connector. Is the voltage above 5.2 volts? If yes, repair the A/C Pressure Sensor Signal circuit for a short to battery voltage. If no, go to next step.
- Turn the ignition off. Connect a jumper wire between the A/C Pressure Sensor Signal circuit and the Sensor Ground circuit in the A/C Pressure Sensor harness connector. With the DRBIII®, monitor the A/C Pressure Sensor voltage. Turn ignition on, engine not running. Is the voltage below 1.0 volt? If yes, replace the A/C Pressure Sensor. If no, go to next step.
- Turn the ignition off. Disconnect the PCM harness connectors. Measure the resistance of the A/C Pressure Sensor circuit from the A/C Pressure Sensor harness connector to the appropriate terminal of the Miller Special Tool. Is the resistance below 5.0 ohms? If yes, go to next step. If no, repair the open in the A/C Pressure Sensor Signal circuit.
- Measure the resistance of the Sensor Ground circuit from the A/C Pressure Sensor harness connector to the appropriate terminal of the Miller Special Tool. Is the resistance below 5.0 ohms? If yes, go to next step. If no, repair the open in the Sensor Ground circuit.
- There are no possible causes remaining, replace PCM. Program the new PCM. See PROGRAMMING .
NOTE:
Ensure the A/C system is properly charged with refrigerant.
CAUTION:
Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal-to-pin connection. Use Miller Special Tool (8815) when performing diagnosis at PCM harness connectors.
NOTE:
Before continuing, check the PCM harness connectors for corrosion, damage or terminal push out. Repair as necessary.
NOTE:
Ensure the A/C refrigerant system is properly charged
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.