METER / GAUGE SYSTEM (for General Countries) Speedometer Malfunction

WIRING DIAGRAM

A01KGAJE01
A01KF7UE01

INSPECTION PROCEDURE

PROCEDURE


  1. INSPECT COMBINATION METER ASSEMBLY

    INSPECTION USING OSCILLOSCOPE


    1. A01KF5AE01
      A01KIKRE01

      Check the input signal waveform.


      1. Remove the combination meter assembly with the connectors still connected.

      2. Connect the oscilloscope to the terminals C6-36 and body ground.

      3. Start the engine.

      4. Check the signal waveform according to the condition(s) in the table below.

        Item Condition
        Tool setting 5 V/DIV, 20 ms/DIV
        Vehicle condition Driving at approx. 20 km/h
      OK
      As shown in the illustration

      Tech Tips

      As the vehicle speed increases, the cycle of the signal waveform narrows.

      Text in Illustration
      *a Wire Harness View:

    NG

    INSPECT COMBINATION METER ASSEMBLY Click here

    OK

    REPLACE COMBINATION METER ASSEMBLY

  2. INSPECT COMBINATION METER ASSEMBLY

    A01KEU5E01
    Text in Illustration
    *a Wire Harness View:

    1. Measure the resistance according to the value(s) in the table below.

      Standard
      Tester connection Condition Specified condition
      C6-5 - Body ground Always Below 1 Ω

    NG

    REPLACE COMBINATION METER ASSEMBLY

    OK

  3. CHECK HARNESS AND CONNECTOR (BETWEEN SPEED SENSOR AND COMBINATION METER ASSEMBLY)

    A01KIP1E01

    1. Disconnect the C6 and S1 connectors.

    2. Measure the resistance according to the value(s) in the table below.

      Standard
      Tester connection Specified condition
      C6-36 - S1-3 Below 1 Ω
      C6-5 - S1-2 Below 1 Ω
      C6-36 - Body ground 10 kΩ or higher

    3. Measure the voltage according to the value(s) in the table below.

      Standard
      Tester connection Condition Specified condition
      S1-1 - Body ground Ignition switch OFF → ON Below 1V → 10 to 14V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE SPEED SENSOR