LEMON Manuals: Even more car manuals for everyone
Home >> Jeep >> 2002 >> Wrangler X, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P0522: Oil Pressure Sensor Volts Low >> Testing

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 step  6.
  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 .
    6. WARNING: When the engine is operating, do not stand in a direct line with the fan. Do not put your hands near the pulleys, belts or fan. Do not wear loose clothing.
  6. The conditions that set the DTC are not present at this time. The following may help in identifying the intermittent condition. With the engine running at normal operating temperature, monitor the DRBIII® parameters related to the DTC while wiggling the wiring harness. Look for parameter values to change and/or a DTC to set. Review the DRBIII® Freeze Frame information. If possible, try to duplicate the conditions under which the DTC was set. Refer to any Technical Service Bulletins (TSB) that may apply. With the DRBIII® as a Dual Channel Lab Scope and the Miller Special Tool (6801), backprobe the Oil Pressure Signal circuit at the Oil Pressure Sensor connector and the PCM connector. Start the engine and look for any differences in the two patterns. Visually inspect the related wire harness. Look for any chafed, pierced, pinched, or partially broken wires. Visually inspect the related wire harness connectors. Look for broken, bent, pushed out, or corroded terminals. Were any of the above conditions present? If yes, repair as necessary. If no, test is complete.
scientia non olet · About LEMON Manuals