METER / GAUGE SYSTEM Speedometer Malfunction

DESCRIPTION

The meter CPU receives vehicle speed signals from the skid control ECU via the CAN communication system. The speed sensor detects the wheel speed and sends the appropriate signals to the skid control ECU. The skid control ECU supplies power to the vehicle speed sensor. The skid control ECU detects vehicle speed signals based on the pulses of the voltage.

WIRING DIAGRAM

A01DPZBE03

INSPECTION PROCEDURE

Note

If the vehicle speed is outside the allowable range when tested, perform the on-vehicle inspection Click here.

Tech Tips

Before starting the following inspection, check tire size and tire air pressure.

PROCEDURE


  1. CHECK CAN COMMUNICATION SYSTEM


    1. Check if a CAN communication DTC is output.


      1. for LHD with Entry and Start System Click here.

      2. for LHD without Entry and Start System Click here.

      3. for RHD with Entry and Start System Click here.

      4. for RHD without Entry and Start System Click here.

        Result
        Result Proceed to
        CAN communication DTC is not output. A
        CAN communication DTC is output. (for LHD with entry and start system) B
        CAN communication DTC is output. (for LHD without entry and start system) C
        CAN communication DTC is output. (for RHD with entry and start system) D
        CAN communication DTC is output. (for RHD without entry and start system) E

    B

    GO TO CAN COMMUNICATION SYSTEM Click here

    C

    GO TO CAN COMMUNICATION SYSTEM Click here

    D

    GO TO CAN COMMUNICATION SYSTEM Click here

    E

    GO TO CAN COMMUNICATION SYSTEM Click here

    A

  2. PERFORM ACTIVE TEST USING INTELLIGENT TESTER (SPEED METER OPERATION)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the intelligent tester on.

    4. Enter the following menus: Body Electrical / Combination Meter / Active Test.

    5. Check the operation by referring to the table below.

      Combination Meter
      Tester Display Test Part Control Range Diagnostic Note
      Speed Meter Operation Speedometer 0, 40, 80, 120* (mph) Confirm that the vehicle is stopped with the engine idling.
      0, 40, 80, 120, 160, 200* (km/h)

      • *: except 5L-E

      OK
      Speedometer indication is normal.

    NG

    REPLACE COMBINATION METER ASSEMBLY Click here

    OK

  3. READ VALUE USING INTELLIGENT TESTER (VEHICLE SPEED METER)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the intelligent tester on.

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

    5. Check the values by referring to the table below.

      Combination Meter
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Vehicle Speed Meter Vehicle speed/Min.: 0 km/h (0 mph), Max.: 255 km/h (158 mph) Almost the same as actual vehicle speed (Speedometer tester) -
      OK
      Vehicle speed displayed on the intelligent tester is almost the same as the actual vehicle speed measured using a speedometer tester (calibrated chassis dynamometer).

    NG

    READ VALUE USING INTELLIGENT TESTER (FR/FL/RR/RL WHEEL SPEED) Click here

    OK

    REPLACE COMBINATION METER ASSEMBLY Click here

  4. READ VALUE USING INTELLIGENT TESTER (FR/FL/RR/RL WHEEL SPEED)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the intelligent tester on.

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

    5. Check the values by referring to the table below.

      ABS/VSC/TRC
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      FR Wheel Speed Vehicle speed/Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph) Almost the same as actual vehicle speed (Speedometer tester) -
      FL Wheel Speed Vehicle speed/Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph) Almost the same as actual vehicle speed (Speedometer tester) -
      RR Wheel Speed Vehicle speed/Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph) Almost the same as actual vehicle speed (Speedometer tester) -
      RL Wheel Speed Vehicle speed/Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph) Almost the same as actual vehicle speed (Speedometer tester) -
      OK
      Vehicle speed displayed on the intelligent tester is almost the same as the actual vehicle speed measured using a speedometer tester (calibrated chassis dynamometer).
      Result
      Result Proceed to
      OK A
      NG (for Hydraulic Brake Booster) B
      NG (for 2TR-FE, Vacuum Brake Booster) C
      NG (for 5L-E, Vacuum Brake Booster) D

    B

    GO TO VEHICLE STABILITY CONTROL SYSTEM Click here

    C

    GO TO VEHICLE STABILITY CONTROL SYSTEM Click here

    D

    GO TO ANTI-LOCK BRAKE SYSTEM Click here

    A

  5. REPLACE SKID CONTROL ECU


    1. Replace the skid control ECU with a new or normally functioning one.


      1. for LHD Hydraulic Brake Booster Click here.

      2. for RHD Hydraulic Brake Booster Click here.

      3. for 2TR-FE, 5L-E Click here.

        OK
        The operation of the speedometer returns to normal.

    NG

    REPLACE COMBINATION METER ASSEMBLY Click here

    OK

    END