СИСТЕМА МЕХАНИЧЕСКОЙ ТРАНСМИССИИ "MULTIMODE", Diagnostic DTC:P0500

DTC Code DTC Name
P0500 Vehicle Speed Sensor "A"

DESCRIPTION

Vehicles, which are equipped with the VSC (Vehicle Stability Control) system, detect the vehicle speed using the skid control ECU and wheel speed sensor. The wheel speed sensor monitors the wheel rotation speed and sends a signal to the skid control ECU. The skid control ECU converts the wheel speed signal into a 4-pulse signal and transmits it to the TCM via the combination meter. The TCM determines the vehicle speed based on the frequency of the pulse signal.

B00451LE04
*a 4-pulse
*b From Wheel Speed Sensor
*c Skid Control ECU
*d Combination Meter
DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate Memory
P0500 Vehicle Speed Sensor "A"

The TCM detects the following conditions simultaneously for 4 seconds or more:

(1-trip detection logic)


  1. Vehicle is being driven: Transmission revolution sensor signal is 1,650 rpm or more

  2. Vehicle speed signal is 9 km/h (5.6 mph) or less

  3. Gear is engaged

  • Open or short in speed sensor circuit

  • Combination meter

  • Speed sensor (Brake control system)

  • Skid control ECU (Brake control system)

  • TCM

 Does not come on Comes on DTC stored

WIRING DIAGRAM

Click here

When DTC P0500 is output, a ground short in the wiring of terminal SPD or an internal ground short in the relevant ECU is suspected.

PROCEDURE


  1. 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: Powertrain / Multi-Mode M/T / Data List / Vehicle Speed.

    5. Drive the vehicle.

    6. According to the display on the GTS, read the Data List.


      Powertrain > Multi-Mode M/T > Data List
      Tester Display
      Vehicle Speed
      OK
      Vehicle speeds displayed on GTS and speedometer display are equal.
      Result
      Proceed to
      OK
      NG

    OK

    SYMPTOM SIMULATION AND DTC CHECK Click here

    NG

  2. CHECK COMBINATION METER ASSEMBLY (SPD SIGNAL WAVEFORM)


    1. B00425PC03
      *a

      Component with harness connected

      (Combination Meter Assembly)

      Check the output waveform.


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

      2. Connect an oscilloscope to terminals E46-6 (+S) and body ground.

      3. Turn the ignition switch to ON.

      4. Turn the wheel slowly.

      5. Check the signal waveform according to the condition in the table below.

        Item Condition
        Tool setting 5 V/DIV., 20 ms/DIV.
        Vehicle condition Driving at approx. 20 km/h (12 mph)
        OK
        The waveform is displayed as shown in the illustration.

        Tech Tips

        When the system is functioning normally, one wheel revolution generates 4 pulses.

      Result
      Proceed to
      OK
      NG

    NG

    GO TO METER / GAUGE SYSTEM (SPEED SIGNAL CIRCUIT) Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (TCM - COMBINATION METER)


    1. Disconnect the TCM connector.

    2. Disconnect the combination meter assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E46-6 (+S) - A108-23 (SPD) Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. REPLACE TCM


    1. Replace the TCM.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  5. PERFORM INITIALIZATION


    1. Perform the initialization and learning procedure.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    END