ECD SYSTEM, Diagnostic DTC:P0522, P0523

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

DESCRIPTION

The oil pressure control system reduces and increases engine oil pressure using the oil pressure switching valve in the timing chain cover assembly. When the engine speed reaches 2600 rpm while racing the engine after warming it up, the oil pressure switching valve operates and the engine oil pressure system changes from low pressure control mode to high pressure control mode. When the engine speed drops to 2400 rpm, the engine oil pressure system changes from high pressure control mode to low pressure control mode *1. The oil pressure sender gauge assembly detects the engine oil pressure.

*1: If the oil temperature is presumed high, the high pressure control mode remains at all engine speed.

A005KMLE04
*1 High Oil Pressure
*2 Engine Oil Pressure
*3 Low Oil Pressure
*4 Engine Speed
P0522
DTC Detection Drive Pattern DTC Detection Condition Trouble Area
Ignition switch ON for 1.5 seconds

Oil pressure sender gauge assembly output voltage is 0.04V or less.

(2 trip detection logic)

  • 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
Ignition switch ON for 4 seconds

Oil pressure sender gauge assembly output voltage is 4.7V or more.

(2 trip detection logic)

  • 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

A005IJNE03

CAUTION / NOTICE / HINT

Note


  • Inspect the fuses for circuits related to this system before performing the following inspection procedure.

  • When replacing the ECM, the ECM needs Registration and initialization 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 (OIL PRESSURE SENDER GAGE ASSEMBLY - ECM)


    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
      B28-3 (VC) - A59-74 (VC) Always Below 1 Ω
      B28-2 (VOUT) - A59-73 (POP) Always Below 1 Ω
      B28-1 (GND) - A59-75 (E2) Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      B28-3 (VC) or A59-74 (VC) - Body ground Always 10 kΩ or higher
      B28-2 (VOUT) or A59-73 (POP) - Body ground Always 10 kΩ or higher
      B28-1 (GND) or A59-75 (E2) - Body ground Always 10 kΩ or higher

    4. Reconnect the oil pressure sender gauge assembly connector.

    5. Reconnect the ECM connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR Click here

    OK

  2. CHECK ECM TERMINAL VOLTAGE (VC TERMINAL)


    1. A005LEVE01
      *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
      B28-2 (VC) - Body ground Ignition switch ON 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 GAGE 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 ignition switch off and wait for 30 seconds or more.

    4. Turn the ignition switch to ON and wait for 4 seconds or more.

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

    6. 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


    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 ignition switch off and wait for 30 seconds or more.

    4. Turn the ignition switch to ON and wait for 4 seconds or more.

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

    6. Confirm that the DTC is not output again.


    NEXT

    END