METER / GAUGE SYSTEM Speedometer Malfunction

DESCRIPTION

The combination meter assembly controls the speedometer in accordance with the vehicle speed signals from the skid control ECU (brake actuator assembly) through the CAN communication system.

WIRING DIAGRAM

A004IVIE11
*1 CAN Communication Line
*2 SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)
*3 COMBINATION METER ASSEMBLY

PROCEDURE


  1. CHECK CAN COMMUNICATION SYSTEM


    1. Check if CAN communication DTCs are output Click here.

      Result
      Result Proceed to
      DTCs are not output. A
      DTCs are output. B

    B

    GO TO CAN COMMUNICATION SYSTEM Click here

    A

  2. PERFORM ACTIVE TEST USING GTS (SPEED METER 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
      Speed Meter Operation Speedometer 0, 40, 80, 120, 160, 200, 240 km/h -
      OK
      The vehicle speed displayed on the tester is approximately the same as that of the speedometer reading.

    NG

    REPLACE COMBINATION METER ASSEMBLY Click here

    OK

  3. READ VALUE USING GTS (VEHICLE SPEED METER)


    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 / Data List.

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

      Combination Meter
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Vehicle Speed Meter

      Vehicle speed /

      Min.: 0 (0)

      Max.: 255 (158)

      		 Approximately same as actual vehicle speed (when vehicle is being driven) Unit km/h (mph)
      OK
      The vehicle speed displayed on the tester is approximately the same as the actual vehicle speed.

      Note

      Determine whether the value displayed on the tester 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

  4. CHECK VEHICLE STABILITY CONTROL SYSTEM


    1. Check if the vehicle stability control system outputs DTCs Click here.

      Result
      Result Proceed to
      DTCs are not output. A
      DTCs are output. B

    B

    GO TO VEHICLE STABILITY CONTROL SYSTEM Click here

    A

  5. READ VALUE USING GTS (VEHICLE SPEED)


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Chassis / ABS/VSC/TRAC / Data List.

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

      Combination Meter
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Vehicle Speed

      Vehicle speed /

      Min.: 0 (0)

      Max.: 326.4 (202.8)

      		 Approximately same as actual vehicle speed (when vehicle is being driven) Unit km/h (mph)
      OK
      The vehicle speed displayed on the tester is approximately the same as the actual vehicle speed.

      Note

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


    NG

    GO TO VEHICLE STABILITY CONTROL SYSTEM Click here

    OK

  6. REPLACE COMBINATION METER ASSEMBLY


    1. Replace the combination meter assembly with a new one Click here.

      OK
      The operation of the speedometer returns to normal.

    OK

    END

    NG

    REPLACE SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) Click here