MULTI-MODE MANUAL TRANSAXLE SYSTEM, 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.

A121748E04

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 hereClick 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 hereClick hereClick here

    NG

  2. CHECK COMBINATION METER ASSEMBLY (SPD SIGNAL WAVEFORM)

    1. E219774C03

      *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.

        Tip:

        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 hereClick 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.

      for LHD:Click hereClick here

      for RHD:Click hereClick here

    Result

    Proceed to

    NEXT
    NEXT

  5. PERFORM INITIALIZATION

    1. Perform the initialization and learning procedure.

      Click here

    Result

    Proceed to

    NEXT
    NEXT

    END