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

DTC Code DTC Name
P0500 Vehicle Speed Sensor

DESCRIPTION

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 ECM via the combination meter. The ECM determines the vehicle speed based on the frequency of the pulse signal.

B004648E03
*a 4-Pulse
*b from Wheel Speed Sensor
*c Skid Control ECU (Brake Actuator Assembly)
*d Combination Meter Assembly
P0500
DTC Detection Drive Pattern DTC Detection Condition Trouble Area
Drive the vehicle at 25 km/h (16 mph) or more

Vehicle speed signal is not input to ECM regardless of whether vehicle is in motion

(1 trip detection logic)

  • Open or short in speed signal circuit

  • Combination meter assembly

  • ECM

Tech Tips

For vehicles with a cruise control system, detection does not start unless the following conditions are met.


  • Speed limiter main switch status is on.

  • Cruise control main switch status is on.

  • Average time period between speed pulses is a non zero value and frozen for a calibrated time.

  • Sensed vehicle speed from hardware is greater than 25 km/h (16 mph).

  • Engine is running.

Related Data List
DTC No. Data List
P0500 Vehicle Speed

WIRING DIAGRAM

B0045KDE02
*a from Brake Actuator Assembly (Skid Control ECU)
*b Combination Meter Assembly
*c to Other ECUs

CAUTION / NOTICE / HINT

Note


  • When replacing the ECM, the ECM needs Registration and Initialization Click here.

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

Tech Tips


  • When the ECM must be replaced, before replacing the ECM, perform the "Learning Values Save" function using the GTS. Then after installing a new ECM, perform all of the initialization and registration procedures for the "Learning Values Write" function by following the instructions shown on the GTS display.

  • 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 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: Powertrain / Engine and ECT / Data List / Vehicle Speed.

    5. Drive the vehicle.

    6. Read the value displayed on the GTS.

      OK
      Vehicle speeds displayed on GTS and speedometer display are equal.
      Result
      Result Proceed to
      NG A
      OK B

    B

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Click here

    A

  3. CHECK TERMINAL VOLTAGE ((+S VOLTAGE)


    1. B00478QE01

      Disconnect the combination meter assembly connector.

    2. Turn the ignition switch to ON.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      F1-6 (+S) - Body ground Ignition switch ON 4.5 to 5.5 V
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Combination Meter Assembly)

    NG

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

    OK

  4. CHECK COMBINATION METER ASSEMBLY (SPD SIGNAL WAVEFORM)


    1. B0046FXE02

      Turn the ignition switch to ON.

    2. Jack up the vehicle.

    3. Move the shift lever to neutral.

    4. 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
      F1-6 (+S) - Body ground Ignition switch ON Voltage generated intermittently
      Text in Illustration
      *a

      Component without harness connected

      (Combination Meter Assembly)

      Tech Tips

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

      Result
      Result Proceed to
      NG A
      OK B

    B

    REPLACE ECM Click here

    A

  5. REPLACE COMBINATION METER ASSEMBLY


    1. Replace the combination meter assembly Click here.


    NEXT

  6. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Clear the DTCs Click here.

    5. Turn the ignition switch off.

    6. Start the engine.

    7. Drive the vehicle at 25 km/h (16 mph) or more.

      CAUTION:

      When performing the confirmation driving pattern, obey all speed limits and traffic laws.

    8. Turn the GTS on.

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

    10. Confirm that the pending DTC is not output.


    NEXT

    END

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


    1. Disconnect the F1 combination meter assembly connector.

    2. Disconnect the A108 ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F1-6 (+S) - A108-51 (SPD) Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR Click here

    OK

  8. REPLACE ECM


    1. Replace the ECM Click here.


    NEXT

  9. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Clear the DTCs Click here.

    5. Turn the ignition switch off.

    6. Start the engine.

    7. Drive the vehicle at 25 km/h (16 mph) or more.

      CAUTION:

      When performing the confirmation driving pattern, obey all speed limits and traffic laws.

    8. Turn the GTS on.

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

    10. Confirm that the pending DTC is not output.


    NEXT

    END

  10. REPAIR OR REPLACE HARNESS OR CONNECTOR


    1. Repair or replace the harness or connector.


    NEXT

  11. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Clear the DTCs Click here.

    5. Turn the ignition switch off.

    6. Start the engine.

    7. Drive the vehicle at 25 km/h (16 mph) or more.

      CAUTION:

      When performing the confirmation driving pattern, obey all speed limits and traffic laws.

    8. Turn the GTS on.

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

    10. Confirm that the pending DTC is not output.


    NEXT

    END

  12. CHECK SPEEDOMETER CIRCUIT


    1. Check the speedometer circuit Click here.


    NEXT

  13. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Clear the DTCs Click here.

    5. Turn the ignition switch off.

    6. Start the engine.

    7. Drive the vehicle at 25 km/h (16 mph) or more.

      CAUTION:

      When performing the confirmation driving pattern, obey all speed limits and traffic laws.

    8. Turn the GTS on.

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

    10. Confirm that the pending DTC is not output.


    NEXT

    END