СИСТЕМА ECD, 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.

A012I40E02
Table 1.
*1 High Oil Pressure
*2 Engine Oil Pressure
*3 Low Oil Pressure
*4 Engine Speed
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 engine oil level warning light*1 or ENGINE OIL LOW warning message*2, and engine oil pressure warning light*1 or engine oil pressure low symbol*2 will help in understanding why this DTC was stored.

Click hereНажмите здесь

  • *1: w/ multi-information display (segment LCD type)

  • *2: w/ multi-information display (dot LCD type)

Table 2. 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 hereНажмите здесь

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 hereНажмите здесь).

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 engine oil level warning light is currently not illuminated*1 or ENGINE OIL LOW warning message is currently not displayed*2, such as when engine oil is added by the customer.

  • *1: w/ multi-information display (segment LCD type)

  • *2: w/ multi-information display (dot LCD type)

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 and ECT > Trouble Codes
      Result
      ResultProceed to
      DTC P0524 is outputA
      DTC P0524 and other DTCs are outputB
      Tip:

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

    B

    GO TO DTC CHART Click here Нажмите здесь

    A

  2. CHECK ENGINE OIL LEVEL

    1. Check the engine oil level.

      Click hereНажмите здесь

    2. Check the state of the engine oil level warning light*1 or ENGINE OIL LOW warning message*2.

      Result
      Result Proceed to
      Engine oil level is low, and engine oil level warning light is illuminated*1 or ENGINE OIL LOW warning message is displayed*2 A
      Engine oil level is within the specified range, and engine oil level warning light is not illuminated*1 or ENGINE OIL LOW warning message is not displayed*2 B
      Tip:

      • If the engine oil level warning light is not illuminated*1 or ENGINE OIL LOW warning message is not displayed*2 even though the engine oil level is lower than the Low mark, or the engine oil level warning light is illuminated*1 or ENGINE OIL LOW warning message is displayed*2 even though the engine oil level is within the specified range, inspect the oil level sensor and related parts for malfunctions.

      • *1: w/ multi-information display (segment LCD type)

      • *2: w/ multi-information display (dot LCD type)

    B Нажмите здесь

    GO TO STEP 5

    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 hereНажмите здесь

      Powertrain > Engine and ECT > 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 hereНажмите здесь

      Result
      Proceed to
      OK
      NG
    NG Нажмите здесь

    OK

  7. REPLACE OIL PRESSURE SENDER GAUGE ASSEMBLY

    1. Replace the oil pressure sender gauge assembly.

      Click hereНажмите здесь

      Result
      Proceed to
      NEXT
    NEXT Нажмите здесь

    GO TO STEP 11

  8. REPLACE OIL PRESSURE SWITCHING VALVE ASSEMBLY

    1. Replace the oil pressure switching valve assembly.

      Click hereНажмите здесь

      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 hereНажмите здесь

      Powertrain > Engine and ECT > 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 hereНажмите здесь

      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 hereНажмите здесь

      Powertrain > Engine and ECT > 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