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Engine Coolant Temperature Receiver Gauge Malfunction [11/2021 - ]: Procedure

  1. CHECK CAN COMMUNICATION SYSTEM 
    1. Check if CAN communication system DTCs are output.

      for HEV Model: Refer to DIAGNOSIS SYSTEM [11/2021 - 03/2023] , or refer to DIAGNOSIS SYSTEM [03/2023 - 03/2024] , or refer to DIAGNOSIS SYSTEM [03/2024 - ]

      for Gasoline Model: Refer to DIAGNOSIS SYSTEM [11/2021 - 03/2023] , or refer to DIAGNOSIS SYSTEM [03/2023 - 03/2024] , or refer to DIAGNOSIS SYSTEM [03/2024 - ]

      Result

      Result Proceed to
      DTCs are not output A
      DTCs are output B

    Result: 

    B 

    GO TO CAN COMMUNICATION SYSTEM 

    for HEV Model: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2021 - ]

    for Gasoline Model: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2021 - ]

    Result: 

    A 

    See step  2

  2. CHECK FOR DTC (SFI SYSTEM) 
    1. Check if SFI system DTCs are output.

      Powertrain > Engine > Trouble Codes 

      Result

      Result Proceed to
      DTCs are not output A
      DTCs are output B

    Result: 

    B 

    GO TO SFI SYSTEM 

    for HEV Model (for A25A-FXS): Refer to DIAGNOSTIC TROUBLE CODE CHART [11/2021 - 03/2022] , or refer to DIAGNOSTIC TROUBLE CODE CHART [03/2022 - 03/2023] , or refer to DIAGNOSTIC TROUBLE CODE CHART [03/2023 - 03/2024] , or refer to DIAGNOSTIC TROUBLE CODE CHART [03/2024 - ]

    for Gasoline Model (for A25A-FKS): Refer to DIAGNOSTIC TROUBLE CODE CHART [11/2021 - 03/2022] , or refer to DIAGNOSTIC TROUBLE CODE CHART [03/2022 - 03/2023] , or refer to DIAGNOSTIC TROUBLE CODE CHART [03/2023 - 03/2024] , or refer to DIAGNOSTIC TROUBLE CODE CHART [03/2024 - ]

    for Gasoline Model (for T24A-FTS): Refer to DIAGNOSTIC TROUBLE CODE CHART [11/2021 - 03/2023] , or refer to DIAGNOSTIC TROUBLE CODE CHART [03/2023 - 03/2024] , or refer to DIAGNOSTIC TROUBLE CODE CHART [03/2024 - ]

    Result: 

    A 

    See step  3

  3. PERFORM ACTIVE TEST USING GTS 
    1. Perform the Active Test according to the display on the GTS.

      Body Electrical > Combination Meter > Active Test 

      Tester Display Measurement Item Control Range Diagnostic Note
      Water Temperature Meter Operation (50C, 122F) Engine coolant temperature receiver gauge
      (50°C, 122°F)
      ON See [Display 1]
      Water Temperature Meter Operation (60C, 140F) Engine coolant temperature receiver gauge
      (60°C, 140°F)
      ON See [Display 1]
      Water Temperature Meter Operation (70C, 158F) Engine coolant temperature receiver gauge
      (70°C, 158°F)
      ON See [Display 1]
      Water Temperature Meter Operation (80C, 176F) Engine coolant temperature receiver gauge
      (80°C, 176°F)
      ON See [Display 1]
      Water Temperature Meter Operation (Middle) Engine coolant temperature receiver gauge
      (Middle)
      ON See [Display 1]
      Water Temperature Meter Operation (110C, 230F) Engine coolant temperature receiver gauge
      (110°C, 230°F)
      ON See [Display 1]
      Water Temperature Meter Operation (120C, 248F) Engine coolant temperature receiver gauge
      (120°C, 248°F)
      ON See [Display 1]
      Water Temperature Meter Operation (127C, 260F) Engine coolant temperature receiver gauge
      (127°C, 260°F)
      ON See [Display 1]

      HINT: 

      [Display 1]: Water Temperature Meter Operation 

      1. GTY1069255Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Engine Coolant Temperature Receiver Gauge
        (w/ Headup Display)
        *b Engine Coolant Temperature Receiver Gauge
        (w/o Headup Display)
        *c Segments - -

        Refer to the following table for the specified engine coolant temperature receiver gauge position for each selected value:

        FOR HEV MODEL

        Tester Display Engine Coolant Temperature Receiver Gauge Indication
        Water Temperature Meter Operation
        (50C, 122F)
        Segments illuminate 3/8
        Water Temperature Meter Operation
        (60C, 140F)
        Segments illuminate 4/8
        Water Temperature Meter Operation
        (70C, 158F)
        Segments illuminate 4/8
        Water Temperature Meter Operation
        (80C, 176F)
        Segments illuminate 4/8
        Water Temperature Meter Operation
        (Middle)
        Segments illuminate 4/8
        Water Temperature Meter Operation
        (110C, 230F)
        Segments illuminate 5/8
        Water Temperature Meter Operation
        (120C, 248F)
        Segments illuminate 8/8
        Water Temperature Meter Operation
        (127C, 260F)
        Segments illuminate 8/8
        FOR GASOLINE MODEL

        Tester Display Engine Coolant Temperature Receiver Gauge Indication
        Water Temperature Meter Operation
        (50C, 122F)
        Segments illuminate 2/8
        Water Temperature Meter Operation
        (60C, 140F)
        Segments illuminate 2/8
        Water Temperature Meter Operation
        (70C, 158F)
        Segments illuminate 3/8
        Water Temperature Meter Operation
        (80C, 176F)
        Segments illuminate 4/8
        Water Temperature Meter Operation
        (Middle)
        Segments illuminate 4/8
        Water Temperature Meter Operation
        (110C, 230F)
        Segments illuminate 5/8
        Water Temperature Meter Operation
        (120C, 248F)
        Segments illuminate 8/8
        Water Temperature Meter Operation
        (127C, 260F)
        Segments illuminate 8/8

      Body Electrical > Combination Meter > Active Test 

      Tester Display
      Water Temperature Meter Operation (50C, 122F)

      Body Electrical > Combination Meter > Active Test 

      Tester Display
      Water Temperature Meter Operation (60C, 140F)

      Body Electrical > Combination Meter > Active Test 

      Tester Display
      Water Temperature Meter Operation (70C, 158F)

      Body Electrical > Combination Meter > Active Test 

      Tester Display
      Water Temperature Meter Operation (80C, 176F)

      Body Electrical > Combination Meter > Active Test 

      Tester Display
      Water Temperature Meter Operation (Middle)

      Body Electrical > Combination Meter > Active Test 

      Tester Display
      Water Temperature Meter Operation (110C, 230F)

      Body Electrical > Combination Meter > Active Test 

      Tester Display
      Water Temperature Meter Operation (120C, 248F)

      Body Electrical > Combination Meter > Active Test 

      Tester Display
      Water Temperature Meter Operation (127C, 260F)

      Result

      Result Proceed to
      Active Test can be performed correctly A
      Active Test cannot be performed correctly B

    Result: 

    A 

    REPLACE ECM 

    for HEV Model (for A25A-FXS): Refer to REMOVAL [11/2021 - ]

    for Gasoline Model (for A25A-FKS): Refer to REMOVAL [11/2021 - ]

    for Gasoline Model (for T24A-FTS): Refer to REMOVAL [11/2021 - ]

    Result: 

    B 

    REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [11/2021 - ]