METER / GAUGE SYSTEM Tachometer Malfunction

DESCRIPTION

The combination meter receives engine speed signals from the ECM via the CAN line. The combination meter displays engine speed data that is calculated based on the data received from the ECM.

WIRING DIAGRAM

A002OZ2E02
*1 Combination Meter Assembly
*2 CAN Communication Line

PROCEDURE


  1. CHECK CAN COMMUNICATION SYSTEM


    1. Check for DTCs Click here.

      Result
      Result Proceed to
      CAN communication system DTC is not output A
      CAN communication system DTC is output B

    B

    GO TO CAN COMMUNICATION SYSTEM Click here

    A

  2. PERFORM ACTIVE TEST USING INTELLIGENT TESTER (TACHOMETER)


    1. Use the Active Test to check the operation of the tachometer Click here.

      Combination Meter
      Tester Display Test Part Control Range Diagnostic Note
      TachoMeter Operation Tachometer 0, 1000, 2000, 3000, 4000, 5000, 6000 or 7000 Perform the test with the vehicle stopped and the engine idling.

      Tech Tips

      Make sure that the vehicle is stopped and the engine is idling.

      OK
      Needle indication is normal.

    NG

    REPLACE COMBINATION METER ASSEMBLY Click here

    OK

  3. READ VALUE USING INTELLIGENT TESTER (TACHOMETER)


    1. Use the Data List to check if the tachometer is operating properly Click here.

      Combination Meter
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Engine Rpm Engine speed/Min.: 0, Max.: 12750 Idling: 700 to 800 Unit: rpm
      OK
      Engine speed displayed on the intelligent tester is almost the same as the actual engine speed.

    NG

    REPLACE COMBINATION METER ASSEMBLY Click here

    OK

  4. READ VALUE USING INTELLIGENT TESTER (ENGINE SPEED)


    1. Use the Data List to check the engine speed Click here.

      Engine (for ZR Series Engine)
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Engine Speed

      Engine speed/

      Min.: 0 rpm, Max.: 16383 rpm

      • 580 to 680 rpm: Idling (for Manual Transaxle)

      • 600 to 700 rpm: Idling (except Manual Transaxle)

      		 -
      Vehicle Speed

      Vehicle speed/

      Min.: 0 km/h, Max.: 255 km/h

      		 Actual vehicle speed The speed is indicated on the speedometer.
      Engine (for 1WW)
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Engine Speed

      Engine speed/

      Min.: 0 rpm, Max.: 16383 rpm

      		 Min.: 0 rpm, Max.: 16383 rpm When the crankshaft position sensor is malfunctioning, "Engine speed" is approximately 0 or varies greatly from the actual engine speed.
      Vehicle Speed

      Vehicle speed/

      Min.: 0 km/h, Max.: 255 km/h

      		 Actual vehicle speed -
      Result
      Result Proceed to
      Engine speed displayed on intelligent tester is almost same as actual engine speed A
      Engine speed displayed on intelligent tester is not same as actual engine speed (for ZR Series Engine) B
      Engine speed displayed on intelligent tester is not same as actual engine speed (for 1WW) C

      Tech Tips


      • for 1ZR-FAE:

        If it is necessary to refer to the SFI system, refer to the following procedures Click here.

      • for 2ZR-FAE

        If it is necessary to refer to the SFI system, refer to the following procedures Click here.

      • for 1WW:

        If it is necessary to refer to the ECD system, refer to the following procedures Click here.


    B

    GO TO SFI SYSTEM

    C

    GO TO ECD SYSTEM

    A

  5. REPLACE COMBINATION METER ASSEMBLY


    1. Temporarily replace the combination meter with a new one or normally functioning one Click here.


    NEXT

  6. CHECK COMBINATION METER ASSEMBLY


    1. Check that the operation of the combination meter returns to normal Click here.

      OK
      Operation of combination meter returns to normal.

      Tech Tips

      *: Replacement procedure:



    OK

    END (COMBINATION METER ASSEMBLY IS DEFECTIVE)

    NG

    REPLACE ECM*