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Home >> Toyota >> 2018 >> Highlander XLE, AWD >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> SFI System [2GR-FKS] - Diagnostic Codes - (Except Hybrid) (2 Of 4) >> SFI System >> DTC P0115-2A: Engine Coolant Temperature Sensor 1 Signal Stuck in Range [11/2016 - ] >> Procedure

DTC P0115-2A: Engine Coolant Temperature Sensor 1 Signal Stuck in Range [11/2016 - ]: Procedure

  1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0115-2A) 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Turn the Techstream on.
    4. Enter the following menus: Powertrain / Engine / Trouble Codes.
    5. Read the DTCs.

      Powertrain > Engine > Trouble Codes 

      Result Proceed to
      DTC P0115-2A is output A
      DTC P0115-2A and other DTCs are output B

      HINT: 

      If any DTCs other than P0115-2A are output, troubleshoot those DTCs first.

    Result: 

    GO TO DTC CHART. 

    Refer to  DIAGNOSTIC TROUBLE CODE CHART [11/2016 - 10/2017] 

    Refer to  DIAGNOSTIC TROUBLE CODE CHART [10/2017 - ] 

    Result: 

    See step  2

  2. INSPECT WATER INLET WITH THERMOSTAT SUB-ASSEMBLY 
    1. Inspect the water inlet with thermostat sub-assembly (thermostat opening temperature).

      Refer to INSPECTION [11/2016 - ]

      HINT: 

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

      Refer to INITIALIZATION [11/2016 - ]

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE ENGINE COOLANT TEMPERATURE SENSOR. 

    Refer to  REMOVAL [11/2016 - ] 

    Result: 

    NG 

    REPLACE WATER INLET WITH THERMOSTAT SUB-ASSEMBLY. 

    Refer to  REMOVAL [11/2016 - ]