METER / GAUGE SYSTEM Tachometer Malfunction

DESCRIPTION

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

WIRING DIAGRAM

B006XYHE83
*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.

PROCEDURE


  1. CHECK CAN COMMUNICATION SYSTEM


    1. Check if CAN communication DTCs are output.

      Click here

      Result
      Result Proceed to
      CAN communication DTCs are not output A
      CAN communication 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


    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
      TachoMeter Operation (0rpm) Tachometer (0 rpm) ON -
      TachoMeter Operation (1000rpm) Tachometer (1000 rpm) ON -
      TachoMeter Operation (2000rpm) Tachometer (2000 rpm) ON -
      TachoMeter Operation (3000rpm) Tachometer (3000 rpm) ON -
      TachoMeter Operation (4000rpm) Tachometer (4000 rpm) ON -
      TachoMeter Operation (5000rpm) Tachometer (5000 rpm) ON -
      TachoMeter Operation (6000rpm) Tachometer (6000 rpm) ON -
      TachoMeter Operation (7000rpm) Tachometer (7000 rpm) ON -

      Body Electrical > Combination Meter > Active Test
      Tester Display
      TachoMeter Operation (1000rpm)

      Body Electrical > Combination Meter > Active Test
      Tester Display
      TachoMeter Operation (2000rpm)

      Body Electrical > Combination Meter > Active Test
      Tester Display
      TachoMeter Operation (3000rpm)

      Body Electrical > Combination Meter > Active Test
      Tester Display
      TachoMeter Operation (4000rpm)

      Body Electrical > Combination Meter > Active Test
      Tester Display
      TachoMeter Operation (5000rpm)

      Body Electrical > Combination Meter > Active Test
      Tester Display
      TachoMeter Operation (6000rpm)

      Body Electrical > Combination Meter > Active Test
      Tester Display
      TachoMeter Operation (7000rpm)
      OK
      Tachometer 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