Toyota Corolla Cross: Engine Oil Pressure Sensor/Switch "A" Signal Stuck High (P052024,P05202A)

DESCRIPTION

Refer to DTC P052012.

Click here

MONITOR DESCRIPTION

The ECM calculates the engine oil pressure based on the output voltage of the oil pressure sensor. If any of the following are detected, the ECM will illuminate the MIL and store a DTC.

• The oil pressure sensor output value differs from the specified value for a given engine speed (P052024).
• The oil pressure sensor output voltage does not change for a certain period of time (P05202A).

MONITOR STRATEGY

TYPICAL ENABLING CONDITIONS

TYPICAL MALFUNCTION THRESHOLDS

CONFIRMATION DRIVING PATTERN

HINT:

• After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.

  Click here

• When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.

  Click here

1. Connect the GTS to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the GTS on.
4. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
5. Turn the ignition switch off and wait for at least 30 seconds.
6. Turn the ignition switch to ON.
7. Turn the GTS on.
8. Start the engine and warm it up until the engine coolant temperature is 75°C (167°F) or higher with all the accessories switched off [A].
9. When the vehicle is stationery, gently depress the accelerator pedal until the engine speed increases to 4000 rpm for 1 minute, then release the accelerator pedal to return to the idling speed [B].
10. Repeat step [B] 3 times or more.
11. Enter the following menus: Powertrain / Engine / Trouble Codes [C].
12. Read the pending DTCs.

    HINT:

    • If a pending DTC is output, the system is malfunctioning.
    • If a pending DTC is not output, perform the following procedure.
13. Enter the following menus: Powertrain / Engine / Utility / All Readiness.
14. Input the DTC: P052024 or P05202A.
15. Check the DTC judgment result.

    GTS Display	Description
    NORMAL	DTC judgment completed System normal
    ABNORMAL	DTC judgment completed System abnormal
    INCOMPLETE	DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions

    HINT:

    • If the judgment result is NORMAL, the system is normal.
    • If the judgment result is ABNORMAL, the system is malfunctioning.
    • If the judgment result is INCOMPLETE, perform steps [B] through [C] again.
    • [A] to [C]: Normal judgment procedure.

      The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.

    • When clearing the permanent DTCs, do not disconnect the cable from the auxiliary battery terminal or attempt to clear the DTCs during this procedure, as doing so will clear the universal trip and normal judgment histories.

CAUTION / NOTICE / HINT

HINT:

Read Freeze Frame Data using the GTS. The ECM records vehicle and driving condition information as Freeze Frame Data the moment a DTC is stored. When troubleshooting, Freeze Frame Data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

PROCEDURE

(a) Read the DTCs.

HINT:

If any DTCs other than P052024 or P05202A are output, troubleshoot those DTCs first.

B

GO TO DTC CHART

A

(a) Read the value displayed on the GTS.

(1) Disconnect the oil pressure control valve assembly connector.

(2) Start the engine.

(3) Enter the following menus.

(4) With the engine oil temperature at 75 to 85°C (167 to 185°F), read the "Engine Oil Pressure" with the engine speed at 2000 rpm.

(b) Read the oil pressure using an oil pressure gauge with adapter.

(1) Install the oil pressure gauge with adapter.

Click here

(2) Start the engine.

(3) Enter the following menus.

HINT:

When the engine oil pressure and temperature sensor is removed, the engine oil temperature cannot be checked, so refer to "Coolant Temperature".

(4) Maintain "Coolant Temperature" at 90 to 95°C (194 to 203°F) for 3 minutes, and then read the oil pressure gauge value at 2000 rpm.

HINT:

• Race the engine as necessary to maintain "Coolant Temperature" at 90 to 95°C (194 to 203°F).
• If maintained for 3 minutes or more, the engine oil temperature may exceed 85°C (185°F).

(c) Compare the Data List value and the oil pressure gauge reading.

OK:

Data List value and gauge reading are within +/-50 kPa (7.3 psi) of each other

HINT:

Be sure to clear the DTCs after reinstalling the oil pressure and temperature sensor or reconnecting the oil pressure and temperature sensor or oil pressure control valve assembly connector, as DTCs may be stored.

OK

REPLACE ECM

NG

REPLACE OIL PRESSURE AND TEMPERATURE SENSOR

READ NEXT: