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Home >> Dodge and Ram >> 2023 >> ProMaster 2500 >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> 3.6L - DTCS P0501 To P0601 >> DTC Troubleshooting >> P0523-Engine Oil Pressure Sensor Circuit High >> Diagnostic Test

Diagnostic Test

  1. CHECK FOR AN ACTIVE DTC 
    1. Turn the ignition on.
    2. With the scan tool, read DTCs and record on the repair order.

      Is the DTC active or pending?

      Yes 

      • Go To  2

      No 

  2. CHECK THE (G6) OIL PRESSURE SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE 
    1. Turn the ignition off.
    2. Disconnect the EOP Sensor harness connector.
    3. Turn the ignition on.
    4. Measure the voltage on the (G6) Oil Pressure Signal circuit at the EOP Sensor harness connector.

      Is there any voltage present?

      Yes 

      • Repair the (G6) Oil Pressure Signal circuit for a short to voltage.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

      No 

      • Go To  3
  3. CHECK THE (K900) SENSOR GROUND CIRCUIT FOR AN OPEN/HIGH RESISTANCE 
    1. Turn the ignition off.
    2. Disconnect the PCM C2 harness connector.
    3. Measure the resistance of the (K900) Sensor Ground circuit between the EOP Sensor harness connector and the PCM C2 harness connector.

      Is the resistance below 3.0 Ohms?

      Yes 

      • Go To  4

      No 

      • Repair the (K900) Sensor Ground circuit for an open or high resistance.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  4. CHECK FOR THE (G6) OIL PRESSURE SIGNAL CIRCUIT SHORTED TO THE (F855) 5-VOLT SUPPLY CIRCUIT 
    1. Check for continuity between the (G6) Oil Pressure Signal circuit and the (F855) 5-Volt Supply circuit at the EOP Sensor harness connector.

      Is there continuity between the (G6) Oil Pressure Signal circuit and the (F855) 5-Volt Supply circuit?

      Yes 

      • Repair the short between the (G6) Oil Pressure Signal circuit and the (F855) 5-Volt Supply circuit.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

      No 

      • Go To  5
  5. CHECK THE EOP SENSOR FOR PROPER OPERATION USING A JUMPER 
    1. Reconnect the PCM C2 harness connector.
    2. Connect a jumper between the (G6) Oil Pressure Signal circuit and the (K900) Sensor Ground circuit at the EOP Sensor harness connector.
    3. Turn the ignition on.
    4. With the scan tool, read DTCs and record on the repair order.
      NOTE:

      The P0522-ENGINE OIL TEMPERATURE SENSOR SIGNAL CIRCUIT LOW DTC should be active or pending with the jumper in place.

      Does the scan tool display as described above?

      Yes 

      • Verify that there is good pin to terminal contact in the EOP Sensor and PCM connectors. If no problems were found, replace the Engine Oil Pressure (EOP) Sensor in accordance with the Service Information. Refer to SENSOR, OIL PRESSURE, REMOVAL .
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

      No 

      • Go To  6
        NOTE:

        Remove the jumper before continuing.

  6. CHECK RELATED HARNESS CONNECTIONS 
    1. Disconnect all PCM harness connectors.
    2. Disconnect all related in-line harness connections (if equipped).
    3. 1

      Disconnect the related component harness connectors.

    4. Inspect harness connectors, component connectors, and all male and female terminals for the following conditions:
      • Proper connector installation.
      • Damaged connector locks.
      • Corrosion.
      • Other signs of water intrusion.
      • Weather seal damage (if equipped).
      • Bent terminals.
      • Overheating due to a poor connection (terminal may be discolored due to excessive current draw).
      • Terminals that have been pushed back into the connector cavity.
      • Check for spread terminals and verify proper terminal tension.

      Repair any conditions that are found.

    5. Connect all PCM harness connectors. Be certain that all harness connectors are fully seated and the connector locks are fully engaged.
    6. Connect all in-line harness connectors (if equipped). Be certain that all connectors are fully seated and the connector locks are fully engaged.
    7. Connect all related component harness connectors. Be certain that all connectors are fully seated and the connector locks are fully engaged.
    8. With the scan tool, erase DTCs.
    9. Test drive or operate the vehicle in accordance with the when monitored and set conditions.
    10. With the scan tool, read DTCs.

      Did the DTC return?

      Yes 

      No 

      • The wiring or poor connection problem has been repaired.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
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