METER / GAUGE SYSTEM Engine Coolant Temperature Receiver Gauge Malfunction

DESCRIPTION

In this circuit, the combination meter assembly receives engine coolant temperature signals from the ECM via the CAN communication system. The combination meter assembly displays the engine coolant temperature that is calculated based on the data received from the ECM.

WIRING DIAGRAM

B002KJJE11
*1 Combination Meter Assembly
*2 CAN Communication Line

CAUTION / NOTICE / HINT

Note


  • When replacing the combination meter assembly, make sure to replace it with a new one.

  • If there is an open or short in the engine coolant temperature sensor circuit, the ECM stores DTCs. Troubleshoot the SFI system.

    w/ EGR System: Click here

    w/o EGR System: Click here

    w/ Canister Pump Module: Click here

PROCEDURE


  1. CHECK FOR DTC (CAN COMMUNICATION SYSTEM)


    1. Check if CAN communication DTCs are output.

      Click here

      OK
      CAN communication DTCs are not output.
      Result
      Proceed to
      OK
      NG

    NG

    GO TO CAN COMMUNICATION SYSTEM Click here

    OK

  2. CHECK FOR DTC (SFI SYSTEM)


    1. Check for DTCs.

      w/ EGR System: Click here

      w/o EGR System: Click here

      w/ Canister Pump Module: Click here


      Powertrain > Engine and ECT > Trouble Codes
      OK
      No DTCs are output.
      Result
      Result Proceed to
      OK A
      NG (w/ EGR System) B
      NG (w/ EGR System) C
      NG (w/ Canister Pump Module) D

    B

    GO TO SFI SYSTEM Click here

    C

    GO TO SFI SYSTEM Click here

    D

    GO TO SFI SYSTEM Click here

    A

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


    1. Using the GTS, perform the Active Test.

      Click here


      Body Electrical > Combination Meter > Active Test
      Tester Display Measurement Item Control Range Diagnostic Note
      Water Temperature Meter Operation Engine coolant temperature receiver gauge OFF, LOW, NORMAL, HIGH -

      Body Electrical > Combination Meter > Active Test
      Tester Display
      Water Temperature Meter Operation
      OK
      Engine coolant temperature receiver gauge indication is normal.
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE COMBINATION METER ASSEMBLY Click here

    OK

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


    1. Using the GTS, read the Data List.

      Click here


      Powertrain > Engine and ECT > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Coolant Temp Engine coolant temperature Min.: -40°C (-40°F), Max: 215°C (419°F) 75 to 100°C (167 to 212°F): After warming up engine -

      Body Electrical > Combination Meter > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Coolant Temperature Engine coolant temperature Min.: 0°C (0°F), Max.: 127.5°C (261.5°F) 75 to 100°C (167 to 212°F): After warming up engine -

      Powertrain > Engine and ECT > Data List
      Tester Display
      Coolant Temp

      Body Electrical > Combination Meter > Data List
      Tester Display
      Coolant Temperature

      Tech Tips


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

      • When the Data List values of the ECUs do not match, a signal output error of the ECM or an internal malfunction of the combination meter assembly is suspected.

      OK
      The Data List values of the ECUs do not match.
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE ECM Click here

    OK

  5. CHECK COMBINATION METER ASSEMBLY


    1. Replace the combination meter assembly.

      Click here

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

      OK
      The operation of the engine coolant temperature receiver gauge returns to normal.
      Result
      Proceed to
      OK
      NG

    OK

    END (COMBINATION METER ASSEMBLY IS DEFECTIVE)

    NG

    REPLACE ECM Click here