Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM100000001NMOK
Model Year Start: 2021 Model: Corolla Prod Date Range: [04/2020 - 09/2022]
Title: 2ZR-FXE (ENGINE CONTROL): SFI SYSTEM: P011515; Engine Coolant Temperature Sensor 1 Circuit Short to Battery or Open; 2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]

DTC

P011515

Engine Coolant Temperature Sensor 1 Circuit Short to Battery or Open

DESCRIPTION

Refer to DTC P011511.

Click here 2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]; 2ZR-FXE (ENGINE CONTROL): SFI SYSTEM: P011511; Engine Coolant Temperature Sensor 1 Circuit Short to Ground+

HINT:

When DTC P011515 is stored, the ECM enters fail-safe mode. During fail-safe mode, the engine coolant temperature is estimated to be 80°C (176°F) by the ECM. Fail-safe mode continues until a pass condition is detected.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

Note

P011515

Engine Coolant Temperature Sensor 1 Circuit Short to Battery or Open

Diagnosis condition:

  • Power switch on (IG)

Abnormal condition:

  • The engine coolant temperature sensor output voltage is higher than 4.91 V.

Malfunction time:

  • 0.5 seconds or more

Trip logic:

  • 1 trip detection logic

Detection conditions:

  • Continuous

Sensors/components used for detection:

  • Engine coolant temperature sensor
  • Open or short in engine coolant temperature sensor circuit
  • Engine coolant temperature sensor
  • ECM

Comes on

DTC stored

  • SAE Code: P0118
  • DTC for Mexico Models: Applies

HINT:

When this DTC is output, check the engine coolant temperature in the Data List. Enter the following menus: Powertrain / Engine / Data List / Coolant Temperature.

DTC No.

Coolant Temperature

Malfunction

P011515

-40°C (-40°F)

  • Short to +B in THW circuit
  • Open in THW circuit
  • Open in ETHW circuit

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

Click here 2020 - 2025 MY Corolla Corolla HV [01/2019 -        ]; 2ZR-FXE (ENGINE CONTROL): SFI SYSTEM: CHECK FOR INTERMITTENT PROBLEMS

MONITOR DESCRIPTION

When the power switch is turned on (IG) and the output voltage of the engine coolant temperature sensor is higher than 4.91 V for 0.5 seconds or more, the ECM determines that the engine coolant temperature sensor circuit is malfunctioning and illuminates the MIL and stores a DTC.

MONITOR STRATEGY

Related DTCs

P0118: Engine coolant temperature sensor range check (high voltage)

Required Sensors/Components (Main)

Engine coolant temperature sensor

Required Sensors/Components (Related)

-

Frequency of Operation

Continuous

Duration

0.5 seconds

MIL Operation

Immediate

Sequence of Operation

None

TYPICAL ENABLING CONDITIONS

Monitor runs whenever the following DTCs are not stored

None

Both of the following conditions are met

-

Auxiliary battery voltage

8 V or higher

Power switch

On (IG)

TYPICAL MALFUNCTION THRESHOLDS

Engine coolant temperature sensor voltage [Engine coolant temperature]

Higher than 4.91 V [Less than -59°C (-74°F)]

CONFIRMATION DRIVING PATTERN

Refer to DTC P011511.

Click here 2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]; 2ZR-FXE (ENGINE CONTROL): SFI SYSTEM: P011511; Engine Coolant Temperature Sensor 1 Circuit Short to Ground+

WIRING DIAGRAM

Refer to DTC P011511.

Click here 2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]; 2ZR-FXE (ENGINE CONTROL): SFI SYSTEM: P011511; Engine Coolant Temperature Sensor 1 Circuit Short to Ground+

CAUTION / NOTICE / HINT

NOTICE:

  • Vehicle Control History may be stored in the hybrid vehicle control ECU if the engine is malfunctioning. Certain vehicle condition information is recorded when Vehicle Control History is stored. Reading the vehicle conditions recorded in both the freeze frame data and Vehicle Control History can be useful for troubleshooting.

    - for Nickel Metal Hydride Battery: Click here 2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for NICKEL METAL HYDRIDE BATTERY): VEHICLE CONTROL HISTORY

    - for Lithium-ion Battery: Click here 2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY with P610): VEHICLE CONTROL HISTORY

    (Select Powertrain in Health Check and then check the time stamp data.)

    Click here 2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; 2ZR-FXE (ENGINE CONTROL): SFI SYSTEM: DTC CHECK / CLEAR

  • If any "Engine Malfunction" Vehicle Control History item has been stored in the hybrid vehicle control ECU, make sure to clear it. However, as all Vehicle Control History items are cleared simultaneously, if any Vehicle Control History items other than "Engine Malfunction" are stored, make sure to perform any troubleshooting for them before clearing Vehicle Control History.

    - for Nickel Metal Hydride Battery: Click here 2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for NICKEL METAL HYDRIDE BATTERY): VEHICLE CONTROL HISTORY

    - for Lithium-ion Battery: Click here 2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY with P610): VEHICLE CONTROL HISTORY

HINT:

Read freeze frame data using the Techstream. 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 TERMINAL VOLTAGE (ENGINE COOLANT TEMPERATURE SENSOR)

*a

Front view of wire harness connector

(to Engine Coolant Temperature Sensor)

(a) Disconnect the engine coolant temperature sensor connector.

(b) Turn the power switch on (IG).

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

C46-2 (THW) - Body ground

Power switch on (IG)

0 to 5.5 V

NG

GO TO STEP 4

OK

2.

READ VALUE USING TECHSTREAM (COOLANT TEMPERATURE)

*1

Engine Coolant Temperature Sensor

*2

ECM

*a

Front view of wire harness connector

(to Engine Coolant Temperature Sensor)

-

-

(a) Disconnect the engine coolant temperature sensor connector.

(b) Connect terminals 2 (THW) and 1 (E2) of the engine coolant temperature sensor connector on the wire harness side.

(c) Connect the Techstream to the DLC3.

(d) Turn the power switch on (IG).

(e) Turn the Techstream on.

(f) Enter the following menus: Powertrain / Engine / Data List / Coolant Temperature.

Powertrain > Engine > Data List

Tester Display

Coolant Temperature

(g) According to the display on the Techstream, read the Data List.

OK:

Techstream Display

Specified Condition

Coolant Temperature

140°C (284°F)

HINT:

Perform "Inspection After Repair" after replacing the engine coolant temperature sensor.

Click here 2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; 2ZR-FXE (ENGINE CONTROL): SFI SYSTEM: INITIALIZATION

OK

REPLACE ENGINE COOLANT TEMPERATURE SENSOR

NG

3.

CHECK HARNESS AND CONNECTOR (ENGINE COOLANT TEMPERATURE SENSOR - ECM)

(a) Disconnect the engine coolant 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

C46-2 (THW) - C77-120 (THW)

Always

Below 1 Ω

C46-1 (E2) - C77-119 (ETHW)

Always

Below 1 Ω

OK

REPLACE ECM

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.

CHECK HARNESS AND CONNECTOR (ENGINE COOLANT TEMPERATURE SENSOR - ECM)

(a) Disconnect the engine coolant 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

C46-2 (THW) or C77-120 (THW) - Other terminals

Always

10 kΩ or higher

OK

REPLACE ECM

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR