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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 76 (3.7L/4.7L/5.7L - DTCS P0503 To P0703 - NGC - 1500 & 2500) >> Diagnosis and Testing >> P0522-Oil Pressure Too Low 3.7L, 4.7L >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2011 RAM Pickup. However, it is still accessible from the selected car via links, so may be relevant.
  1. ACTIVE DTC 
    NOTE:

    Make sure that the engine oil is at the proper level. Also, check the customers oil change history to ensure that the oil is being changed at the correct intervals and that the proper oil viscosity is being used.

    1. Start the engine and allow it to reach normal operating temperature.
      WARNING:

      When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts or fan. Do not wear loose clothing. Failure to follow these instructions may result in possible serious or fatal injury.

      NOTE:

      Diagnose and repair any system voltage or sensor supply voltage DTCs before continuing with this test.

      Is the DTC Active at this time?

      Yes 

      • Go To  2.

      No 

  2. OIL PRESSURE SWITCH 
    Fig 1: Oil Pressure Switch Harness Connector
    GC0090850Courtesy of CHRYSLER LLC
    1. Turn the ignition off.
    2. Disconnect the Oil Pressure Switch harness connector.
    3. Ignition on, engine not running.
    4. Connect a jumper wire to the (G6) Oil Pressure Signal circuit in the Sensor harness connector.
    5. With the scan tool monitor the Oil Pressure Switch state.
    6. Touch the other end of the jumper wire to a known good Ground several times.

      Did the Oil Pressure Switch state change from High to Low when connecting and disconnecting the jumper wire to ground?

      Yes 

      • Verify that there is good pin to terminal contact in the Oil Pressure Switch and the Powertrain Control Module connectors. Replace the Engine Oil Pressure Switch if no problems were found with the connectors.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

      No 

      • Go To  3.
        NOTE:

        Remove the jumper wire before continuing.

  3. (G6) OIL PRESSURE SIGNAL CIRCUIT SHORTED TO VOLTAGE 
    Fig 2: Measuring Voltage On (G6) Oil Pressure Signal Circuit In Switch Harness Connector
    GC0090851Courtesy of CHRYSLER LLC
    1. Turn the ignition off.
    2. Disconnect the C1 PCM harness connector.
    3. Ignition on, engine not running.
    4. Measure the voltage on the (G6) Oil Pressure Signal circuit in the Switch harness connector.
      NOTE:

      The sensor voltage should be approximately 5.0 Volts (plus or minus.1 of a volt) with the connector disconnected.

      Does the scan tool display the voltage as described above?

      Yes 

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

      No 

      • Go To  4.
  4. (G6) OIL PRESSURE SWITCH SIGNAL CIRCUIT OPEN 
    Fig 3: Measuring Resistance Of (G6) Oil Pressure Signal Circuit From Oil Pressure Switch Harness Connector To Appropriate Terminal Of PCM Pinout Box 8815
    GC0090852Courtesy of CHRYSLER LLC
    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. Install the PCM Pinout Box (special tool #8815A, Kit, NGC, 38 Position) to perform diagnosis.

    1. Measure the resistance of the (G6) Oil Pressure Signal circuit from the Oil Pressure Switch harness connector to the appropriate terminal of PCM Pinout Box (special tool #8815A, Kit, NGC, 38 Position).

      Is the resistance below 5.0 Ohms?

      Yes 

      • Go To  5.

      No 

      • Repair the open in the (G6) Oil Pressure Signal circuit.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  5. (G6) SIGNAL CIRCUIT SHORTED TO GROUND 
    Fig 4: Measuring Resistance Between Known Good Ground And (G6) Oil Pressure Signal Circuit In Switch Connector
    GC0090853Courtesy of CHRYSLER LLC
    1. Measure the resistance between a known good ground and the (G6) Oil Pressure Signal circuit in the Switch connector.

      Is the resistance below 100 Ohms?

      Yes 

      • Repair the short to ground in the (G6) Oil Pressure Signal circuit.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

      No 

      • Go To  6.
  6. POWERTRAIN CONTROL MODULE (PCM) 
    1. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the related Oil Pressure Switch and the Powertrain Control Module (PCM).
    2. Look for any chafed, pierced, pinched or partially broken wires.
    3. Look for broken, bent, pushed out or corroded terminals. Verify that there is good pin to terminal contact in the Oil Pressure Switch and the Powertrain Control Module connectors.
    4. Refer to any Technical Service Bulletins that may apply.

      Were there any problems found?

      Yes 

      No 

      • Replace and program the Powertrain Control Module in accordance with the Service Information.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
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