Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: Engine Coolant Temperature Sensor 1 Circuit Short to Ground (P011511)

Toyota Corolla Cross (2022-2024) Service Manual / Engine & Hybrid System / M20a-fks (engine Control) / Sfi System / Engine Coolant Temperature Sensor 1 Circuit Short to Ground (P011511)

DESCRIPTION

A thermistor, whose resistance value varies according to the engine coolant temperature, is built into the engine coolant temperature sensor. The structure of the sensor and its connection to the ECM are the same as those of the intake air temperature sensor.

Refer to DTC P011011.

Click here

HINT:

When DTC P011511 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

Note

P011511

Engine Coolant Temperature Sensor 1 Circuit Short to Ground

Diagnosis condition:

  • Ignition switch ON

Abnormal condition:

  • The engine coolant temperature sensor output voltage is less than 0.142 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
  • Short in engine coolant temperature sensor circuit
  • Engine coolant temperature sensor
  • ECM

Comes on

  • SAE Code: P0117
  • 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

P011511

Higher than 135°C (275°F)

Short to ground in THW circuit

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

Click here

MONITOR DESCRIPTION

When the ignition switch is turned ON and the output voltage of the engine coolant temperature sensor is less than 0.142 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

P0117: Engine coolant temperature sensor range check (low 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

All of the following conditions are met

-

Auxiliary battery voltage

8 V or higher

Ignition switch

ON

Starter

Off

TYPICAL MALFUNCTION THRESHOLDS

Engine coolant temperature sensor voltage [Engine coolant temperature]

Less than 0.142 V [Higher than 135°C (275°F)]

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 [A].
  7. Turn the GTS on.
  8. Wait 0.5 seconds or more [B].
  9. Enter the following menus: Powertrain / Engine / Trouble Codes [C].
  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. Proceed to the next screen and enter the DTC to be checked.
  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.
    • [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.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

HINT:

  • If DTC P011511 is stored, check that the engine does not overheat (DTC P011511 may be stored due to engine overheating).
  • 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.

READ VALUE USING GTS (COOLANT TEMPERATURE)

*1

Engine Coolant Temperature Sensor

*2

ECM

(a) Disconnect the engine coolant temperature sensor connector.

(b) Enter the following menus.

Powertrain > Engine > Data List

Tester Display

Coolant Temperature

(c) According to the display on the GTS, read the Data List.

OK:

GTS Display

Specified Condition

Coolant Temperature

-40°C (-40°F)

HINT:

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

Click here

OK

REPLACE ENGINE COOLANT TEMPERATURE SENSOR

NG

2.

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

C48-2 or C76-125 (THW) - Body ground and other terminals

Always

10 kΩ or higher

OK

REPLACE ECM

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

    READ NEXT:

     Engine Coolant Temperature Sensor 1 Circuit Short to Battery or Open (P011515)

    DESCRIPTION Refer to DTC P011511. Click here 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

     Engine Coolant Temperature Sensor 1 Signal Stuck in Range (P01152A)

    DESCRIPTION Refer to DTC P011511. Click here DTC No. Detection Item DTC Detection Condition Trouble Area MIL Note P01152A Engine Coolant Temperature Sensor 1 Signal

     Throttle / Pedal Position Sensor / Switch "A" Circuit Short to Ground (P012011)

    DESCRIPTION The throttle position sensor is built into the throttle body with motor assembly and detects the opening angle of the throttle valve. This sensor is a non-contact type sensor. It uses Hall

    SEE MORE:

     Removal

    REMOVAL CAUTION / NOTICE / HINT COMPONENTS (REMOVAL) Procedure Part Name Code 1 PRECAUTION - - - 2 CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL - - - - 3 REAR CENTER SEAT OUTER BELT ASSEMBLY 733

     Left Side Airbag Deployment Control Circuit Short to Ground (B002011)

    DESCRIPTION DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Test Mode / Check Mode B002011 Left Side Airbag Deployment Control Circuit Short to Ground One of the following conditions is met: The airbag ECU assembly detects a

    © 2020-2024 Copyright www.tcorollacross.com