METER / GAUGE SYSTEM Tachometer Malfunction

DESCRIPTION

The combination meter assembly controls the tachometer in accordance with engine speed signals from the ECM through the CAN communication system.

WIRING DIAGRAM

A0119WEE01

INSPECTION PROCEDURE

PROCEDURE


  1. CONFIRM DTC OUTPUT (CAN COMMUNICATION SYSTEM)


    1. Check DTC Click here.

      Result
      Result Proceed to
      DTC U0100 is not output A
      DTC U0100 is output B

    B

    GO TO DIAGNOSTIC TROUBLE CODE CHART Click here

    A

  2. CONFIRM DTC OUTPUT (ENGINE CONTROL SYSTEM)


    1. Check DTC Click here.

      Result
      Result Proceed to
      Engine control DTC is not output A
      Engine control DTC is output (for 1KR-FE) B
      Engine control DTC is output (for 1NR-FE) C

    B

    GO TO DIAGNOSTIC TROUBLE CODE CHART Click here

    C

    GO TO DIAGNOSTIC TROUBLE CODE CHART Click here

    A

  3. PERFORM ACTIVE TEST USING GTS (TACHOMETER)


    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. According to the display on the GTS, perform the Active Test.

      Combination Meter
      Tester Display Test Part Control Range Diagnostic Note
      Tachometer Operation Tachometer 0/1000/2000/3000/4000/5000/ 6000/7000 rpm -
      OK
      Engine speed displayed on the GTS is approximately the same as that of the tachometer reading.

    NG

    REPLACE COMBINATION METER ASSEMBLY Click here

    OK

  4. READ VALUE USING GTS (TACHOMETER)


    1. Connect the GTS to the DLC3.

    2. Start the engine.

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Combination Meter / Data List.

    5. According to the display on the GTS, read the Data List.

      Combination Meter
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Engine Rpm

      Engine speed

      Min.: 0

      Max.: 12750

      		 Approximately same as actual engine speed (when engine is running) Unit: rpm
      OK
      Engine speed displayed on the GTS is approximately the same as that displayed on the combination meter assembly.

      Note

      Determine whether the value displayed on the GTS is within the acceptable range by referring to the reference values described in "On-Vehicle Inspection" Click here.


    NG

    REPLACE COMBINATION METER ASSEMBLY Click here

    OK

    USE SIMULATION METHOD TO CHECK Click here