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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (2GR-FKS) - Diagnostic Codes (1 Of 6) >> SFI System >> DTC P011B-62: Engine Coolant Temperature / Intake Air Temperature Signal Compare Failure [12/2019 - 10/2022] >> Procedure

DTC P011B-62: Engine Coolant Temperature / Intake Air Temperature Signal Compare Failure [12/2019 - 10/2022]: Procedure

  1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P011B-62) 
    1. Read the DTCs.

      Powertrain > Engine > Trouble Codes 

      Result

      Result Proceed to
      DTC P011B-62 is output A
      DTC P011B-62 and other DTCs are output B

      HINT: 

      If any DTCs other than P011B-62 are output, troubleshoot those DTCs first.

    Result: 

    GO TO DTC CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART [12/2019 - 09/2020]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [09/2020 - 10/2021]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [10/2021 - 10/2022] 

    Result: 

    See step  2

  2. READ VALUE USING GTS (INTAKE AIR TEMPERATURE) 
    1. Leave the vehicle for 7 hours or more.

      HINT: 

      It is necessary to leave the vehicle for 7 hours or more to create conditions similar to the DTC detection conditions.

    2. Read the value displayed on the GTS.

      Powertrain > Engine > Data List 

      Tester Display
      Intake Air Temperature

      Standard

      Difference between the intake air temperature and the actual outside air temperature is within 10°C (18°F).

      HINT: 

      • Temperature readings on the outside temperature gauge of the vehicle (if equipped) are not suitable for comparing to the intake air temperature reading. The outside temperature gauge has a significant delay built in to prevent swings in the temperature display. Use an accurate thermometer to determine the outside air temperature.
      • Perform "Inspection After Repair" after replacing the mass air flow meter sub-assembly.

        Refer to INITIALIZATION [12/2019 - 10/2022]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE MASS AIR FLOW METER SUB-ASSEMBLY. Refer to  REMOVAL [12/2019 - 10/2022] 

    Result: 

    OK 

    See step  3

  3. READ VALUE USING GTS (COOLANT TEMPERATURE) 
    1. Read the value displayed on the GTS.

      Powertrain > Engine > Data List 

      Tester Display
      Coolant Temperature

      Standard

      The difference between the coolant temperature and the actual outside air temperature is within 10°C (18°F).

      HINT: 

      • If the result is not as specified, check that there are no heat sources such as a block heater in the engine compartment.
      • Perform "Inspection After Repair" after replacing the engine coolant temperature sensor.

        Refer to INITIALIZATION [12/2019 - 10/2022]

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE ECM. Refer to  REMOVAL [12/2019 - 09/2020]  , or refer to  REMOVAL [09/2020 - 10/2022] 

    Result: 

    NG 

    REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to  REMOVAL [12/2019 - 10/2022]