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

A01EQ5CE11

INSPECTION PROCEDURE

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 (for LHD) DTC is output B
      CAN communication system (for RHD) DTC is output C

    B

    Go to CAN COMMUNICATION SYSTEM Click here

    C

    Go to CAN COMMUNICATION SYSTEM Click here

    A

  2. PERFORM ACTIVE TEST USING INTELLIGENT TESTER (TACHOMETER)


    1. Operate the intelligent tester according to the display and select the Active Test Click here.

      Combination Meter
      Tester Display Test Part Control Range Diagnostic Note
      TachoMeter Operation Tachometer 0, 1000, 2000, 3000, 4000, 5000, 6000, 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. Operate the intelligent tester according to the display and select the Data List 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 actual engine speed.

    NG

    REPLACE COMBINATION METER ASSEMBLY Click here

    OK

  4. READ VALUE USING INTELLIGENT TESTER (ENGINE SPEED)


    1. Operate the intelligent tester according to the display and select the Data List Click here [3UR-FE], Click here [1UR-FE]).

      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 (3UR-FE) B
      Engine speed displayed on intelligent tester is not same as actual engine speed (1UR-FE) C

    B

    Go to SFI SYSTEM Click here

    C

    Go to SFI SYSTEM Click here

    A

    REPLACE COMBINATION METER ASSEMBLY Click here