Toyota Yaris: Sfi System / Engine Oil Temperature Sensor Circuit Short to Ground (P019511)

Toyota Yaris XP210 (2020-2022) Reapir and Service Manual / Engine & Hybrid System / G16e-gts (engine Control) / Sfi System / Engine Oil Temperature Sensor Circuit Short to Ground (P019511)

DESCRIPTION

The engine oil temperature sensor (engine oil pressure and temperature sensor) replaces the oil temperature with electrical signals and outputs them to the ECM.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Note

P019511

Engine Oil Temperature Sensor Circuit Short to Ground

The engine oil temperature sensor (engine oil pressure and temperature sensor) output voltage is below 0.535 V for 5 seconds or more (1 trip detection logic).

  • Open or short in engine oil temperature sensor (engine oil pressure and temperature sensor) circuit
  • Engine oil temperature sensor (engine oil pressure and temperature sensor)
  • ECM

-

SAE: P0197

HINT:

When a DTC is output, check the Data List item "Engine Oil Temperature Sensor" using the GTS.

Click here

DTC No.

Engine Oil Temperature Sensor

Malfunction

P019511

-40°C (-40°F)

  • Short to ground in THEO circuit
  • Short in EPEO to THEO circuit
  • Open in VCPE circuit

If the Data List displays a normal value, the normal value may be due to a temporary recovery from the malfunction condition. Check for intermittent problems.

MONITOR DESCRIPTION

The ECM monitors the engine oil temperature sensor (engine oil pressure and temperature sensor) and uses the sensor voltage to calculate the engine oil temperature. If the engine oil temperature sensor (engine oil pressure and temperature sensor) output voltage deviates from the normal operating range, the ECM determines that the engine oil temperature sensor (engine oil pressure and temperature sensor) circuit is malfunctioning and stores this DTC.

Example:

If the engine oil temperature sensor (engine oil pressure and temperature sensor) output voltage is below 0.535 V for 5 seconds or more, the ECM will store this DTC.

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: P019511.
  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 has a malfunction.

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 engine oil temperature 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

Switch Condition

Specified Condition

f2-3(VC) - f2-2(E2)

Ignition switch ON

4.5 to 5.5 V

f2-4(THEO) - f2-2(E2)

Ignition switch ON

3.0 to 5.5 V

*a

Front view of wire harness connector

(to Engine Oil Temperature 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

Switch Condition

Specified Condition

f2-3(VC) - f2-4(THEO)

Ignition switch off

171 to 189 kΩ

OK

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

NG

3.

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

(a) Disconnect the engine oil temperature 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

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

Always

Below 1 Ω

f2-4(THEO) or D104-101(THEO) - 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 engine oil temperature 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

Switch Condition

Specified Condition

D110-3(VC) - D110-2(E2)

Ignition switch ON

4.5 to 5.5 V

D110-4(THEO) - D110-2(E2)

Ignition switch ON

3.0 to 5.5 V

*a

Front view of wire harness connector

(to Engine Oil Temperature 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

Switch Condition

Specified Condition

D110-3(VC) - D110-4(THEO)

Ignition switch off

171 to 189 kΩ

OK

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

NG

5.

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

(a) Disconnect the engine oil temperature 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

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

Always

Below 1 Ω

D110-4(THEO) or D104-101(THEO) - Body ground and other terminals

Always

10 kΩ or higher

OK

REPLACE ECM

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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