ECD SYSTEM(w/o Glow Plug Controller), Diagnostic DTC:P0524

DTC Code DTC Name
P0524 Engine Oil Pressure Too Low

DESCRIPTION

Refer to DTC P0522.

Click here

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

P0524

Engine Oil Pressure Too Low

All of the following conditions are met: (1 trip detection logic)

  • Battery voltage is 11 V or higher.

  • Engine oil pressure is less than 140 to 270 kPa.

  • Oil pressure switching valve assembly turned from on to off.

  • Oil pressure switching valve assembly off for 1 second.

  • Oil pressure sender gauge assembly

  • Oil pressure switching valve assembly

  • Oil pump assembly (oil pump drive and driven rotor)

  • ECM

Comes on

DTC stored
Table 1. DTC Detection Drive Pattern

DTC No.

DTC Detection Drive Pattern

P0524

Engine running at 1500 to 2800 rpm or more for 30 seconds*

*: Using the GTS, the oil pressure control system can be inspected by performing Engine Oil Pressure Control Check. Enter the following menus: Powertrain / Engine and ECT/ Utility / Engine Oil Pressure Control Check.

Tip:

Checking the state of the oil level warning light and oil pressure warning light (message) will help in under standing why this DTC was stored.

Click here

Table 2. Related Data List

DTC No.

Data List

P0524

  • Engine Oil Pressure

  • Eng Oil Press Switch Valve

WIRING DIAGRAM

Refer to DTC P0522.

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CAUTION / NOTICE / HINT

Note:

  • When replacing the ECM, perform ECM Initialization and Registration.

    Click hereClick here

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

Tip:

  • When the ECM must be replaced, before replacing the ECM, perform the "Learning Values Save" function using the GTS. Then after installing a new ECM, perform all of the initialization and registration procedures for the "Learning Values Write" function by following the instructions shown on the GTS display.

  • Read freeze frame data using the GTS. 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 ENGINE OIL LEVEL

    1. Check the engine oil level.

      Click here

    2. Check the state of the oil level warning light (message).

      Result

      Result

      Proceed to

      Engine oil level is low and oil level warning light (message) is illuminated

      A

      Engine oil level is within the specified range and oil level warning light (message) is not illuminated

      B
      Tip:

      If the oil level warning light (message) is not illuminated even though the engine oil level is lower than the Low mark, or the oil level warning light (message) is illuminated even though the engine oil level is within the specified range, inspect the oil level sensor and related parts for malfunctions.

    B

    PERFORM ENGINE OIL PRESSURE CONTROL SYSTEM CHECKClick here

    A

  2. CHECK ENGINE OIL LEAKS

    1. Check for engine oil leaks.

      Tip:

      If there are engine oil leaks, perform repairs.

    Result

    Proceed to

    NEXT
    NEXT

  3. ADD ENGINE OIL

    1. Add engine oil.

    Result

    Proceed to

    NEXT
    NEXT

  4. PERFORM ENGINE OIL PRESSURE CONTROL SYSTEM CHECK

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON and turn the GTS on.

    3. Start the engine and warm it up.

    4. Enter the following menus: Powertrain / Engine and ECT / Utility / Engine Oil Pressure Control Check.

      Click hereClick hereClick here

      Powertrain > Engine and ECT > Utility

      Tester Display

      Engine Oil Pressure Control Check

    5. Compare the "valve off" (high pressure control mode) and "valve on" (low pressure control mode) oil pressure values and check the difference.

      Standard

      24.5 kPa or higher.

    Result

    Proceed to

    OK

    NG
    OK

    END

    NG

  5. PERFORM ENGINE OIL PRESSURE CONTROL SYSTEM CHECK

    1. Disconnect the connector of the oil pressure switching valve assembly.

      Note:

      • Make sure that the engine is stopped before disconnecting the connector of the oil pressure switching valve assembly.

      • Make sure that the disconnected connector does not get caught in moving engine parts.

    2. Connect the GTS to the DLC3.

    3. Turn the ignition switch to ON and turn the GTS on.

    4. Start the engine and warm it up.

    5. Enter the following menus: Powertrain / Engine and ECT / Utility / Engine Oil Pressure Control Check.

      Click hereClick hereClick here

      Powertrain > Engine and ECT > Utility

      Tester Display

      Engine Oil Pressure Control Check

    6. Check the engine oil pressure value.

      Result

      Result

      Proceed to

      Engine oil pressure rises to between 120 and 430 kPa

      A

      Except above

      B
      Tip:

      Low oil pressure control mode is not performed when the connector of the oil pressure switching valve assembly is disconnected. Therefore, if the measurement results from Engine Oil Pressure Control Check all indicate oil pressure values which are high, it can be determined that there is an electrical malfunction.

    B

    INSPECT ENGINE OIL PRESSUREClick here

    A

  6. CHECK HARNESS AND CONNECTOR (OIL PRESSURE SWITCHING VALVE ASSEMBLY - ECM)

    1. Disconnect the oil pressure switching valve assembly connector.

    2. Disconnect the ECM connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      B130-2 (OSVG) - Body ground*

      Always

      10 kΩ or higher
      Tip:

      *: Make sure that there are no short circuits to +B.

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTORClick here

    OK

  7. REPLACE ECM

    1. Replace the ECM.

      Click here

    Result

    Proceed to

    NEXT
    NEXT

  8. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON and turn the GTS on.

    3. Start the engine and warm it up.

    4. Enter the following menus: Powertrain / Engine and ECT / Utility / Engine Oil Pressure Control Check.

      Click hereClick hereClick here

      Powertrain > Engine and ECT > Utility

      Tester Display

      Engine Oil Pressure Control Check

    5. Compare the "valve off" (high pressure control mode) and "valve on" (low pressure control mode) oil pressure values and check that the oil pressure has risen.

    Result

    Proceed to

    NEXT
    NEXT

    END

  9. REPAIR OR REPLACE HARNESS OR CONNECTOR

    Result

    Proceed to

    NEXT
    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIREDClick here

  10. INSPECT ENGINE OIL PRESSURE

    1. Inspect the engine oil pressure.

      Click here

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE OIL PRESSURE SWITCHING VALVE ASSEMBLYClick here

    OK

  11. REPLACE OIL PRESSURE SENDER GAUGE ASSEMBLY

    1. Replace the oil pressure sender gauge assembly.

      Click here

    Result

    Proceed to

    NEXT
    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIREDClick here

  12. REPLACE OIL PRESSURE SWITCHING VALVE ASSEMBLY

    1. Replace the oil pressure switching valve assembly.

      Click here

    Result

    Proceed to

    NEXT
    NEXT

  13. PERFORM ENGINE OIL PRESSURE CONTROL SYSTEM CHECK

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON and turn the GTS on.

    3. Start the engine and warm it up.

    4. Enter the following menus: Powertrain / Engine and ECT / Utility / Engine Oil Pressure Control Check.

      Click hereClick hereClick here

      Powertrain > Engine and ECT > Utility

      Tester Display

      Engine Oil Pressure Control Check

    5. Compare the "valve off" (high pressure control mode) and "valve on" (low pressure control mode) oil pressure values and check that the oil pressure has risen.

      Standard

      24.5 kPa or higher.

    Result

    Proceed to

    OK

    NG
    OK

    END

    NG

  14. REPAIR OR REPLACE OIL PUMP ASSEMBLY (OIL PUMP DRIVE AND DRIVEN ROTOR)

    1. Repair or replace the oil pump assembly (oil pump drive and driven rotor).

      Tip:

      If the oil pressure does not rise after disconnecting the connector of the oil pressure switching valve assembly, or if the oil pressure changes, but the difference between the low oil pressure and high oil pressure is small, a mechanical malfunction is probably the cause.

      • The sleeve is stuck due to foreign matter.

      • The oil pressure relief valve is stuck due to foreign matter.

      • The check valve is stuck.

    Result

    Proceed to

    NEXT
    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIREDClick here