METER / GAUGE SYSTEM Engine Coolant Temperature Receiver Gauge Malfunction

DESCRIPTION

The combination meter assembly receives engine coolant temperature signal from the ECM via the CAN communication line. The combination meter assembly displays an engine coolant temperature indication that is calculated based on the data received from the ECM.

WIRING DIAGRAM

A01BFXFE01

INSPECTION PROCEDURE

Note


  • Before starting following inspection, check if the SFI*1 or ECD*2 system troubleshooting.


    • *1: for 1TR-FE, 2TR-FE

    • *2: for 1KD-FTV, 2KD-FTV, 5L-E


  • The meter/gauge system uses the CAN communication system communication system. First inspect the communication systems by following How to Proceed with Troubleshooting Click here. Troubleshoot the meter/gauge system after confirming that the communication systems are functioning properly.

PROCEDURE


  1. CHECK FOR DTC (SFI SYSTEM*1 OR ECD SYSTEM*2)


    • *1: for 1TR-FE, 2TR-FE

    • *2: for 1KD-FTV, 2KD-FTV, 5L-E


    1. Clear the DTCs Click here.

    2. Check for DTCs Click here.

      OK
      SFI system*1 or ECD system*2 communication system DTCs are not output.
      Result
      Result Proceed to
      OK A
      NG (for 1TR-FE) B
      NG (for 2TR-FE)
      NG (for 1KD-FTV) C
      NG (for 2KD-FTV)
      NG (for 5L-E)

      Tech Tips

      *: Go to procedure;



    B

    GO TO SFI SYSTEM*

    C

    GO TO ECD SYSTEM*

    A

  2. PERFORM ACTIVE TEST USING GTS (WATER TEMPERATURE METER OPERATION)


    1. Use the Active Test to check the operation of the engine coolant temperature receiver gauge Click here.

      Combination Meter
      Tester Display Test Part Control Range Diagnostic Note
      Water Temperature Meter Operation Engine coolant temperature receiver gauge OFF, Low, Normal or High -
      OK
      Engine coolant temperature receiver gauge is normal.

    NG

    REPLACE COMBINATION METER ASSEMBLY Click here

    OK

  3. READ VALUE USING GTS (COOLANT TEMPERATURE)


    1. Use the Data List to check if the engine coolant temperature receiver gauge is operating properly Click here.

      Combination Meter
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Coolant Temperature Engine coolant temperature / 0 to 127.5°C (0 to 261.5°F) After warming up: 75 to 100°C (167 to 212°F) -
      OK
      Coolant temperature displayed on the tester is between 75 to 100°C (167 to 212°F) after warming up.

    NG

    REPLACE COMBINATION METER ASSEMBLY Click here

    OK

  4. READ VALUE USING GTS (COOLANT TEMP, COOLANT TEMPERATURE)


    1. Use the Data List to check if the engine coolant temperature receiver gauge is operating properly Click here.

      Engine and ECT
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Coolant Temp Engine coolant temperature / Min.: -40°C (-40°F), Max: 140°C (284°F) 75 to 100°C (167 to 212°F): After warming up -
      Combination Meter
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Coolant Temperature Engine coolant temperature / 0 to 127.5°C (0 to 261.5°F) After warming up: 75 to 100°C (167 to 212°F) -
      OK
      The data list values of the ECUs match.

      Tech Tips


      • When the Data List values of the ECUs match, an internal malfunction of the combination meter assembly is suspected.

      • *: Replacement procedure;



    NG

    REPLACE ECM*

    OK

  5. CHECK COMBINATION METER ASSEMBLY


    1. Temporarily replace the combination meter assembly with a new one or normally functioning one Click here.

    2. Check that the operation of engine coolant temperature receiver gauge returns to normal Click here.

      OK
      The operation of engine coolant temperature receiver gauge returns to normal

      Tech Tips

      *: Replacement procedure;



    NG

    REPLACE ECM*

    OK

    END (COMBINATION METER ASSEMBLY IS DEFECTIVE)