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 CAN communication. The combination meter assembly displays an engine coolant temperature warning based on the data received from the ECM.

WIRING DIAGRAM

B006ZDYE02
*1 CAN Communication Line
*2 Combination Meter Assembly

CAUTION / NOTICE / HINT

Note


  • When replacing the combination meter assembly, always replace it with a new one. If a combination meter assembly which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.

  • Before replacing the ECM, refer to Service Bulletin.

Tech Tips

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

for A25A-FKS: Click here

for 2GR-FKS: Click here

for 2AR-FE: Click here

PROCEDURE


  1. CHECK CAN COMMUNICATION SYSTEM


    1. Check if CAN communication system DTCs are output.

      Click here

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

    B

    GO TO CAN COMMUNICATION SYSTEM Click here

    A

  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

    B

    GO TO SFI SYSTEM for A25A-FKS: Click here
    GO TO SFI SYSTEM for 2GR-FKS: Click here
    GO TO SFI SYSTEM for 2AR-FE: Click here

    A

  3. PERFORM ACTIVE TEST USING GTS

    B006Z7UC03
    *a Water Temperature Meter Operation 50C (122F)
    *b Water Temperature Meter Operation 60C (140F)
    *c Water Temperature Meter Operation 70C (158F)
    *d Water Temperature Meter Operation 80C (176F)
    *e Water Temperature Meter Operation (Middle)
    *f Water Temperature Meter Operation 110C (230F)
    *g Water Temperature Meter Operation 120C (248F)
    *h Water Temperature Meter Operation 127C (260F)

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Combination Meter / Active Test.

    5. 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 -
      Water Temperature Meter Operation (60C,140F) Engine coolant temperature receiver gauge 60°C (140°F) ON -
      Water Temperature Meter Operation (70C,158F) Engine coolant temperature receiver gauge 70°C (158°F) ON -
      Water Temperature Meter Operation (80C,176F) Engine coolant temperature receiver gauge 80°C (176°F) ON -
      Water Temperature Meter Operation (Middle) Engine coolant temperature receiver gauge (Middle) ON -
      Water Temperature Meter Operation (110C,230F) Engine coolant temperature receiver gauge 110°C (230°F) ON -
      Water Temperature Meter Operation (120C,248F) Engine coolant temperature receiver gauge 120°C (248°F) ON -
      Water Temperature Meter Operation (127C,260F) Engine coolant temperature receiver gauge 127°C (260°F) ON -

      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)
      OK
      Engine coolant temperature receiver gauge indication is normal.
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE ECM for A25A-FKS: Click here
    REPLACE ECM for 2GR-FKS: Click here
    REPLACE ECM for 2AR-FE: Click here

    NG

    REPLACE COMBINATION METER ASSEMBLY Click here