ECD SYSTEM, Diagnostic DTC:P0524

DTC Code DTC Name
P0524 Engine Oil Pressure Too Low

DESCRIPTION

The oil pressure control system reduces and increases engine oil pressure using the oil pressure switching valve assembly in the oil filter bracket. When the engine speed reaches 2200 rpm while racing the engine after warming it up, the oil pressure switching valve assembly operates and the engine oil pressure system changes from low pressure control mode to high pressure control mode. When the engine speed drops to 2100 rpm, the engine oil pressure system changes from high pressure control mode to low pressure control mode. The oil pressure sender gauge assembly detects the engine oil pressure.

A250712E02

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

P0524

Engine Oil Pressure Too Low

Conditions (a) and (b) continue for 5 seconds or more (1 trip detection logic):

(a) 0.3 seconds have elapsed after sending a command to change from low oil pressure control mode to high oil pressure control mode.

(b) The oil pressure control system does not change to high oil pressure control mode.

  • Short in oil pressure sender gauge assembly circuit

  • Oil pressure sender gauge assembly

  • Oil pressure switching valve assembly

  • ECM

  • Oil pump assembly

  • Engine oil amount insufficient

Comes on

DTC stored
Tip:

Checking the state of the oil level warning light and oil pressure warning light will help in understanding why this DTC was stored.

Click here

Table 1. Related Data List

DTC No.

Data List

P0524

Engine Oil Pressure

Eng Oil Press Switch Valve

CONFIRMATION DRIVING PATTERN

DTC No.

DTC Detection Drive Pattern

P0524

After warming up the engine, race the engine at 2200 rpm or higher.*

*: 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.

WIRING DIAGRAM

Refer to DTC P0522.

Click here

CAUTION / NOTICE / HINT

Note:

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

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

Tip:

  • 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.

  • An output DTC does not necessarily indicate that there is a malfunction. DTCs may have been stored due to an insufficient engine oil amount even though the oil level warning light is currently not illuminated, such as when engine oil is added by the customer.

PROCEDURE

  1. CHECK FOR ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0524)

    1. Connect the GTS to the DLC3.

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

    3. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

    4. Read the DTCs.

      Powertrain > Engine > Trouble Codes

      Result

      Result

      Proceed to

      DTC P0524 is output

      A

      DTC P0524 and other DTCs are output

      B
      Tip:

      If any DTCs other than P0524 are output, troubleshoot those DTCs first.

    B

    GO TO DTC CHART

    Click hereClick here

    A

  2. CHECK ENGINE OIL LEVEL

    1. Check the engine oil level.

      Click here

    2. Check the state of the oil level warning light.

      Result

      Result

      Proceed to

      Engine oil level is low and oil level warning light is illuminated

      A

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

      B
      Tip:

      If the oil level warning light is not illuminated even though the engine oil level is lower than the Low mark, or the oil level warning light 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

  3. CHECK ENGINE OIL LEAKS

    1. Check for engine oil leaks.

      Result

      If there are engine oil leaks, perform repairs.

    Result

    Proceed to

    NEXT
    NEXT

  4. ADD ENGINE OIL

    1. Add engine oil.

    Result

    Proceed to

    NEXT
    NEXT

  5. 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 here

      Powertrain > Engine > Utility

      Tester Display

      Engine Oil Pressure Control Check

    5. Compare the "Valve OFF: Hi Oil press" (high pressure control mode) and "Valve ON: Low Oil press" (low pressure control mode) oil pressure values and check the difference.

      Standard

      50 kPa or higher.

    Result

    Proceed to

    OK

    NG
    OK

    END

    NG

  6. 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

  7. 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

  8. REPLACE OIL PRESSURE SWITCHING VALVE ASSEMBLY

    1. Replace the oil pressure switching valve assembly.

      Click here

    Result

    Proceed to

    NEXT
    NEXT

  9. 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 here

      Powertrain > Engine > Utility

      Tester Display

      Engine Oil Pressure Control Check

    5. Compare the "Valve OFF: High Oil press" (high pressure control mode) and "Valve ON: Low Oil press" (low pressure control mode) oil pressure values and check the difference.

      Standard

      50 kPa or higher.

    Result

    Proceed to

    OK

    NG
    OK

    END

    NG

  10. REPAIR OR REPLACE OIL PUMP ASSEMBLY

    1. Repair or replace the oil pump assembly.

      Click here

      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 locked due to foreign matter.

      • The oil pressure relief valve is locked due to foreign matter

      • The check valve is stuck.

    Result

    Proceed to

    NEXT
    NEXT

  11. 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 here

      Powertrain > Engine > Utility

      Tester Display

      Engine Oil Pressure Control Check

    5. Compare the "Valve OFF: Hi Oil press" (high pressure control mode) and "Valve ON: Low Oil press" (low pressure control mode) oil pressure values and check that the oil pressure has risen.

    Result

    Proceed to

    NEXT
    NEXT

    END