ECD SYSTEM (w/ DPF), Diagnostic DTC:P0522, P0523

DTC Code DTC Name
P0522 Engine Oil Pressure Sensor / Switch Low
P0523 Engine Oil Pressure Sensor / Switch High

DESCRIPTION

Refer to DTC P0524 Click here

P0522
DTC Detection Drive Pattern DTC Detection Condition Trouble Area
Idling for 5 second

Conditions (a) and (b) continue for 0.5 seconds or more (1 trip detection logic):

(a) Engine switch is on (IG).

(b) Oil pressure sender gauge assembly voltage is 0.5 V or less.

  • Open or short in oil pressure sender gauge assembly circuit

  • Oil pressure sender gauge assembly

  • ECM
P0523
DTC Detection Drive Pattern DTC Detection Condition Trouble Area
Idling for 5 second

Conditions (a) and (b) continue for 0.5 seconds or more (1 trip detection logic):

(a) Engine switch is on (IG).

(b) Oil pressure sender gauge assembly voltage is 4.6 V or higher.

  • Open or short in oil pressure sender gauge assembly circuit

  • Oil pressure sender gauge assembly

  • ECM
Related Data List
DTC No. Data List

P0522

P0523

 Engine Oil Pressure

WIRING DIAGRAM

A00O5YBE01

INSPECTION PROCEDURE

Note


  • After replacing the ECM, the new ECM needs registration Click here and initialization Click here.

  • After replacing the fuel supply pump assembly, the ECM needs initialization Click here.

  • After replacing an injector assembly, the ECM needs registration Click here.

Tech Tips

Read freeze frame data using the intelligent tester. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, and other data from the time the malfunction occurred.

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR


    1. Disconnect the oil pressure sender gauge assembly connector.

    2. Disconnect the ECM connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      C123-3 (VC) - C91-13 (VCPX) Always Below 1 Ω
      C123-2 (VOUT) - C91-4 (POP) Always Below 1 Ω
      C123-1 (GND) - C91-14 (EPEX) Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      C123-3 (VC) or C91-13 (VCPX) - Body ground Always 10 kΩ or higher
      C123-2 (VOUT) or C91-4 (POP) - Body ground Always 10 kΩ or higher
      C123-1 (GND) or C91-14 (EPEX) - Body ground Always 10 kΩ or higher

    4. Reconnect the ECM connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR Click here

    OK

  2. CHECK ECM TERMINAL VOLTAGE (VC TERMINAL)


    1. A00O624E01
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Oil Pressure Sender Gauge Assembly)

      Disconnect the oil pressure sender gauge assembly connector.

    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      C123-3 (VC) - Body ground Engine switch on (IG) 4.5 to 5.5 V

    3. Reconnect the oil pressure sender gauge assembly connector.


    NG

    REPLACE ECM Click here

    OK

  3. REPLACE OIL PRESSURE SENDER GAUGE ASSEMBLY


    1. Replace the oil pressure sender gauge assembly Click here.


    NEXT

  4. CHECK WHETHER DTC OUTPUT RECURS (P0522 AND/OR P0523)


    1. Connect the intelligent tester to the DLC3.

    2. Clear the DTCs Click here.

    3. Turn the engine switch off for 30 seconds or more.

    4. Turn the engine switch on (IG) and start the engine.

    5. Start the engine and idle it for 5 second or more.

    6. Enter the following menus: Powertrain / Engine and ECT / DTC.

    7. Read the DTCs.

      Result
      Result Proceed to
      P0522 or P0523 is output A
      No DTC is output B

    B

    END

    A

  5. REPLACE ECM


    1. Replace the ECM Click here.


    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Click here

  6. REPAIR OR REPLACE HARNESS OR CONNECTOR


    1. Repair or replace the harness or connector.


    NEXT

  7. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED


    1. Connect the intelligent tester to the DLC3.

    2. Clear the DTCs Click here.

    3. Turn the engine switch off for 30 seconds or more.

    4. Turn the engine switch on (IG) and start the engine.

    5. Start the engine and idle it for 5 second or more.

    6. Enter the following menus: Powertrain / Engine and ECT / DTC.

    7. Confirm that the DTC is not output again.


    NEXT

    END