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DTC P0522: Oil Pressure Sensor Volts Low: Testing

  1. Start the engine. With the DRBIII® in Sensors, read the Oil Pressure Sensor voltage. Is the Oil Pressure Sensor voltage above 0.1 volt? If yes, go to next step. If no, go to INTERMITTENT CONDITION  under SELF-DIAGNOSTIC SYSTEM.
  2. Turn the ignition off. Disconnect the Oil Pressure Sensor harness connector. Check connectors and clean/repair as necessary. Turn ignition on, engine not running. Measure the voltage on the 5-Volt Supply circuit. Is the voltage between 4.8 and 5.2 volts? If yes, go to next step. If no, repair the Oil Pressure Sensor 5-Volt Supply circuit for an open.
  3. Turn the ignition off. Disconnect the PCM harness connectors. Measure the resistance between ground and the Oil Pressure Sensor Signal circuit at the Oil Pressure Sensor harness connector. Is the resistance below 100 ohms? If yes, repair the Oil Pressure Sensor Signal circuit for a short to ground. If no, go to next step.
  4. Measure the resistance between the Oil Pressure Sensor Signal circuit and the Sensor ground circuit at the Oil Pressure Sensor harness connector. Is the resistance below 100 ohms? If yes, repair the Oil Pressure Sensor Signal circuit that is shorted to the Sensor ground circuit. If no, go to next step.
  5. Turn the ignition off. Reconnect PCM connectors. Turn ignition on, engine not running. With the DRBIII® in Sensors, read the Oil Pressure Sensor voltage. Is the voltage above 4.5 volts? If yes, replace the Oil Pressure Sensor. If no, replace PCM. Program the new PCM. See PROGRAMMING .
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