ECD SYSTEM(w/ DPF), Diagnostic DTC:P0500

DTC Code DTC Name
P0500 Vehicle Speed Sensor "A"

DESCRIPTION

Vehicles, which are equipped with ABS (Anti-lock Brake System), detect the vehicle speed using the skid control ECU (brake actuator assembly) and speed sensor. The 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 ECM via the combination meter assembly. The ECM determines the vehicle speed based on the frequency of the pulse signal.

B001XY6E87
*1 Pulse Signal
*2 from Wheel Speed Sensor
*3 Skid Control ECU
*4 Combination Meter Assembly
DTC Detection Drive Pattern DTC Detection Condition Trouble Area
Drive the vehicle at 10 km/h (6.3 mph) or more While vehicle being driven, no vehicle speed sensor signal transmitted to ECM (2 trip detection logic).

  • Open or short in speedometer circuit

  • Speedometer assembly

  • ECM
Related Data List
DTC No. Data List
P0500 Vehicle Speed

WIRING DIAGRAM

B001YELE36

CAUTION / NOTICE / HINT

Note


  • Inspect the fuses of circuits related to this system before performing the following inspection procedure.

  • After replacing the ECM, the new ECM needs registration (See page ) and initialization Click here.

  • After replacing the fuel supply pump assembly, the ECM needs initialization Click here.

  • After replacing an injector assembly, the ECM needs registration Click here.

Tech Tips

Read freeze frame data using the GTS. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, and other data from the time the malfunction occurred.

PROCEDURE


  1. CHECK OPERATION OF SPEEDOMETER


    1. Drive the vehicle and check whether the operation of the speedometer in the combination meter assembly is normal.

      Tech Tips

      The vehicle speed sensor is operating normally if the speedometer reading is normal.

      OK
      The vehicle speed sensor is operating normally.

    NG

    CHECK SPEEDOMETER CIRCUIT Click here

    OK

  2. READ VALUE USING GTS (VEHICLE SPEED)


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON and start the engine.

    3. Turn the GTS on.

    4. Enter the following menus: Engine and ECT / Data List / All Data / Vehicle Speed.

    5. Drive the vehicle.

    6. Read the value displayed on the GTS.

      OK
      Vehicle speed displayed on GTS and speedometer display are equal.

    OK

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Click here

    NG

  3. CHECK HARNESS AND CONNECTOR

    B00205KE01
    Text in Illustration
    *a

    Front view of wire harness connector

    (to Combination Meter Assembly)

    1. Disconnect the combination meter assembly connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      E119-6 (+S) - Body ground Ignition switch ON 4.5 to 5.5 V

    3. Reconnect the combination meter assembly connector.


    NG

    CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - ECM) Click here

    OK

  4. CHECK COMBINATION METER ASSEMBLY (SPD SIGNAL WAVEFORM)

    B001VUOE02
    Text in Illustration
    *a

    Component with harness connected

    (Combination Meter Assembly)

    1. Move the shift lever to neutral.

    2. Jack up the vehicle.

    3. Check the voltage between the terminal of the combination meter assembly and the body ground while a wheel is turned slowly.

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      E119-6 (+S) - Body ground Ignition switch ON Voltage generated intermittently

      Tech Tips

      The output voltage should fluctuate up and down, similarly to the diagram when the wheel is turned slowly.


    OK

    REPLACE ECM Click here

    NG

    REPLACE COMBINATION METER ASSEMBLY Click here

  5. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - ECM)


    1. Disconnect the combination meter assembly connector.

    2. Disconnect the ECM connector.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      E119-6 (+S) - A38-8 (SPD) Always Below 1 Ω
      E119-6 (+S) or A38-8 (SPD) - Body ground Always 10 kΩ or higher
      Standard Resistance
      for RHD
      Tester Connection Condition Specified Condition
      E119-6 (+S) - A52-8 (SPD) Always Below 1 Ω
      E119-6 (+S) or A52-8 (SPD) - Body ground Always 10 kΩ or higher

    4. Reconnect the combination meter assembly connector.

    5. Reconnect the ECM connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR Click here

    OK

  6. REPLACE ECM


    1. Replace the ECM Click here.


    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Click here

  7. CHECK SPEEDOMETER CIRCUIT


    1. Check the speedometer circuit Click here.

      Tech Tips

      Inspect the brake actuator assembly and speed sensor.


    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Click here

  8. REPLACE COMBINATION METER ASSEMBLY


    1. Replace the combination meter assembly Click here.


    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Click here

  9. REPAIR OR REPLACE HARNESS OR CONNECTOR


    1. Repair or replace the harness or connector.


    NEXT

  10. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED


    1. Connect the GTS to the DLC3.

    2. Clear the DTCs Click here.

    3. Turn the ignition switch off.

    4. Start the engine.

    5. Drive the vehicle at 10 km/h (6.3 mph) or more.

    6. Enter the following menus: Engine and ECT / Trouble Codes.

    7. Confirm that the pending DTC is not output again.


    NEXT

    END