METER / GAUGE SYSTEM Tachometer Malfunction

DESCRIPTION

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

WIRING DIAGRAM

A004JZ0E04
*1 CAN Communication Line
*2 Combination Meter Assembly

PROCEDURE


  1. CHECK FOR DTC (METER / GAUGE SYSTEM)


    1. Check if meter gauge system DTCs are output Click here.

      OK
      DTCs are not output.

    NG

    GO TO DIAGNOSTIC TROUBLE CODE CHART Click here

    OK

  2. CHECK FOR DTC (SFI SYSTEM)


    1. Check if the SFI system outputs DTCs Click here.

      OK
      DTCs are not output.

    NG

    GO TO SFI SYSTEM Click here

    OK

  3. PERFORM ACTIVE TEST USING GTS (TACHOMETER OPERATION)


    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 tester, 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
      The engine speed displayed on the tester is approximately the same as that of the tachometer reading.

    OK

    REPLACE ECM Click here

    NG

    REPLACE COMBINATION METER ASSEMBLY Click here