Toyota Yaris: Sfi System / Engine Oil Pressure Sensor/Switch "A" Circuit Short to Battery (P052012,P052014)

Toyota Yaris XP210 (2020-2024) Reapir and Service Manual / Engine & Hybrid System / G16e-gts (engine Control) / Sfi System / Engine Oil Pressure Sensor/Switch "A" Circuit Short to Battery (P052012,P052014)

DESCRIPTION

The oil pressure sensor (engine oil pressure and temperature sensor) utilizes a semiconductor type pressure sensor that changes resistance in accordance with changes in pressure. An internal electrical signal that varies with the change in resistance is amplified and sent to the ECM as the engine oil pressure signal.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Note

P052012

Engine Oil Pressure Sensor/Switch "A" Circuit Short to Battery

The oil pressure sensor (engine oil pressure and temperature sensor) output voltage is higher than 4.495 V for 5 seconds or more (1 trip detection logic).
  • Open or short in oil pressure sensor (engine oil pressure and temperature sensor) circuit
  • Oil pressure sensor (engine oil pressure and temperature sensor)
  • ECM

Comes on

SAE: P0523

P052014

Engine Oil Pressure Sensor/Switch "A" Circuit Short to Ground or Open

The oil pressure sensor (engine oil pressure and temperature sensor) output voltage is below 0.159 V for 5 seconds or more (1 trip detection logic).
  • Open or short in oil pressure sensor (engine oil pressure and temperature sensor) circuit
  • Oil pressure sensor (engine oil pressure and temperature sensor)
  • ECM

Comes on

SAE: P0522
Related Data List

DTC No.

Data List

P052012

Engine Oil Pressure

P052014

MONITOR DESCRIPTION

The ECM calculates the engine oil pressure based on the output voltage of the oil pressure sensor (engine oil pressure and temperature sensor). If the signal output from the oil pressure sensor is outside of the specified range, the MIL is illuminated and a DTC is stored.

MONITOR STRATEGY

Frequency of Operation

Continuous

CONFIRMATION DRIVING PATTERN

  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. Wait 10 seconds or more.
  9. Enter the following menus: Powertrain / Engine / Trouble Codes.
  10. 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.
  11. Enter the following menus: Powertrain / Engine / Utility / All Readiness.
  12. Input the DTC: P052012 or P052014.
  13. 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.

WIRING DIAGRAM

Production date from 2021/04 to 2021/07 Production date from 2021/07

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

1.

CHECK VEHICLE SPECIFICATION

(a) Check the vehicle specification

Result

Proceed to

Production date from 2021/04 to 2021/07

A

Production date from 2021/07

B
B

GO TO STEP 4

A

2.

CHECK HARNESS AND CONNECTOR

HINT:

Make sure that the connector is properly connected. If it is not, securely connect it and check for DTCs again.

(a) Disconnect the oil pressure sensor (engine oil pressure and temperature sensor) connector.

(b) Turn the ignition switch to ON.

(c) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Condition

Specified Condition

f2-3(VC) - Body ground

Ignition switch ON

4.5 to 5.5 V

f2-1(PEO) - Body ground

Ignition switch ON

Below 0.1 V

*a

Front view of wire harness connector

Oil Pressure Sensor (Engine Oil Pressure And Temperature Sensor)

(d) Turn the ignition switch off and wait for at least 30 seconds.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

f2-1(PEO) - f2-2(E2)

Ignition switch off

190 to 210 kΩ

f2-2(E2) - Body ground

Always

Below 1 Ω
OK

REPLACE OIL PRESSURE SENSOR (ENGINE OIL PRESSURE AND TEMPERATURE SENSOR)

NG

3.

CHECK HARNESS AND CONNECTOR (OIL PRESSURE SENSOR (ENGINE OIL PRESSURE AND TEMPERATURE SENSOR) - ECM)

(a) Disconnect the oil pressure sensor (engine oil pressure and temperature sensor) connector.

(b) Disconnect the ECM connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

f2-2(E2) - D104-78(EPEO)

Always

Below 1 Ω

f2-1(PEO) - D104-100(PEO)

Always

Below 1 Ω

f2-3(VC) - D104-77(VCPE)

Always

Below 1 Ω

f2-2(E2) or D104-78(EPEO) - Body ground and other terminals

Always

10 kΩ or higher

f2-1(PEO) or D104-100(PEO) - Body ground and other terminals

Always

10 kΩ or higher

f2-3(VC) or D104-77(VCPE) - Body ground and other terminals

Always

10 kΩ or higher
OK

REPLACE ECM

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.

CHECK HARNESS AND CONNECTOR

HINT:

Make sure that the connector is properly connected. If it is not, securely connect it and check for DTCs again.

(a) Disconnect the oil pressure sensor (engine oil pressure and temperature sensor) connector.

(b) Turn the ignition switch to ON.

(c) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Condition

Specified Condition

D110-3(VC) - Body ground

Ignition switch ON

4.5 to 5.5 V

D110-1(PEO) - Body ground

Ignition switch ON

Below 0.1 V

*a

Front view of wire harness connector

Oil Pressure Sensor (Engine Oil Pressure And Temperature Sensor)

(d) Turn the ignition switch off and wait for at least 30 seconds.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

D110-1(PEO) - D110-2(E2)

Ignition switch off

190 to 210 kΩ

D110-2(E2) - Body ground

Always

Below 1 Ω
OK

REPLACE OIL PRESSURE SENSOR (ENGINE OIL PRESSURE AND TEMPERATURE SENSOR)

NG

5.

CHECK HARNESS AND CONNECTOR (OIL PRESSURE SENSOR (ENGINE OIL PRESSURE AND TEMPERATURE SENSOR) - ECM)

(a) Disconnect the oil pressure sensor (engine oil pressure and temperature sensor) connector.

(b) Disconnect the ECM connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

D110-2(E2) - D104-78(EPEO)

Always

Below 1 Ω

D110-1(PEO) - D104-100(PEO)

Always

Below 1 Ω

D110-3(VC) - D104-77(VCPE)

Always

Below 1 Ω

D110-2(E2) or D104-78(EPEO) - Body ground and other terminals

Always

10 kΩ or higher

D110-1(PEO) or D104-100(PEO) - Body ground and other terminals

Always

10 kΩ or higher

D110-3(VC) or D104-77(VCPE) - Body ground and other terminals

Always

10 kΩ or higher
OK

REPLACE ECM

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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    Turning the Engine Off

    Stop the vehicle completely. Manual transaxle: Shift into neutral and set the parking brake.

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