METER / GAUGE SYSTEM Speedometer Malfunction

WIRING DIAGRAM

A0137GIE02
A01374EE01

INSPECTION PROCEDURE

PROCEDURE


  1. INSPECT COMBINATION METER ASSEMBLY (SPEED SIGNAL)


    1. A0138Q2E03
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Combination Meter Assembly)
      *b Waveform

      Disconnect the C1 combination meter assembly connector.

    2. Move the shift lever to the neutral position.

    3. Jack up the vehicle.

    4. Turn the ignition switch to ON.

    5. Using an oscilloscope, check the waveform while the wheel is turned slowly.

      Item Contents
      Terminal Connections C1-22 (SI) - Body ground
      Tester Range 5V/DIV, 20 msec/DIV
      Vehicle Condition Wheel is turned slowly.
      OK
      Waveform is as shown in the illustration.
      Result
      Result Proceed to
      OK A
      NG (w/ VSC) B
      NG (w/o VSC) C

    6. Reconnect the combination meter assembly connector.


    B

    CHECK HARNESS AND CONNECTOR (ABS AND TRACTION ACTUATOR (SKID CONTROL ECU) - COMBINATION METER ASSEMBLY) Click here

    C

    CHECK HARNESS AND CONNECTOR (BRAKE ACTUATOR (SKID CONTROL ECU) - COMBINATION METER ASSEMBLY) Click here

    A

    REPLACE COMBINATION METER ASSEMBLY Click here

  2. CHECK HARNESS AND CONNECTOR (ABS AND TRACTION ACTUATOR (SKID CONTROL ECU) - COMBINATION METER ASSEMBLY)


    1. Disconnect the C1 combination meter assembly connector.

    2. Disconnect the A41 ABS and traction actuator (skid control ECU) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A41-33 (SP1) - C1-22 (SI) Always 19 to 21 Ω
      A41-33 (SP1) or C1-22 (SI) - Body ground Always 10 kΩor higher

    4. Reconnect the ABS and traction actuator (skid control ECU) connector.

    5. Reconnect the combination meter assembly connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    GO TO VEHICLE STABILITY CONTROL SYSTEM Click here

  3. CHECK HARNESS AND CONNECTOR (BRAKE ACTUATOR (SKID CONTROL ECU) - COMBINATION METER ASSEMBLY)


    1. Disconnect the C1 combination meter assembly connector.

    2. Disconnect the A46 brake actuator (skid control ECU) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A46-2 (SP1) - C1-22 (SI) Always 19 to 21 Ω
      A46-2 (SP1) or C1-22 (SI) - Body ground Always 10 kΩor higher

    4. Reconnect the brake actuator (skid control ECU) connector.

    5. Reconnect the combination meter assembly connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    GO TO ANTI-LOCK BRAKE SYSTEM Click here