SFI SYSTEM, Diagnostic DTC:P0500

DTC Code DTC Name
P0500 Vehicle Speed Sensor "A"

DESCRIPTION

The speed sensor detects the wheel speed and sends the appropriate signals to the skid control ECU. The skid control ECU converts these wheel speed signals into a pulse signal and outputs it to the ECM via the combination meter. The ECM determines the vehicle speed based on the frequency of this pulse signal.

B001XY6E20
*1 Pulse Signal
*2 from Wheel Speed Sensor
*3 Skid Control ECU
*4 Combination Meter
DTC No. DTC Detection Condition Trouble Area
P0500 While the vehicle is being driven, no vehicle speed signal is transmitted to the ECM (2 trip detection logic).

  • Open or short in speed signal circuit

  • Wheel speed sensor

  • Combination meter assembly

  • ECM

  • Skid control ECU

MONITOR DESCRIPTION



WIRING DIAGRAM

B001WPVE07

CAUTION / NOTICE / HINT

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, if the air-fuel ratio was lean or rich, 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 is normal.

      Tech Tips


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

      • If the speedometer does not operate, check it by following the procedure described in Speedometer Malfunction.


    NG

    GO TO MALFUNCTION IN SPEEDOMETER Click here

    OK

  2. 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 / Engine and ECT / Data List / All Data / Vehicle Speed.

    5. Drive the vehicle.

    6. Read the value displayed on the GTS.

      OK
      Vehicle speeds displayed on the GTS and speedometer display are equal.

    OK

    CHECK FOR INTERMITTENT PROBLEMS Click here

    NG

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


    1. Disconnect the combination meter 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
      E7-4 (+S) - A38-13 (SPD) Always Below 1 Ω
      E7-4 (+S) or A38-13 (SPD) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      E7-4 (+S) - A52-13 (SPD) Always Below 1 Ω
      E7-4 (+S) or A52-13 (SPD) - Body ground Always 10 kΩ or higher

      Tech Tips

      If the wire harness has a short, check the speed signal circuit in other systems related to the vehicle speed signal (e.g. tire pressure warning system, audio system, etc.).


    NG

    CHECK ALL SYSTEMS RELATED TO SPEED SENSOR SIGNAL AND REPAIR OR REPLACE MALFUNCTIONING HARNESS OR CONNECTOR

    OK

  4. CHECK COMBINATION METER ASSEMBLY (+S VOLTAGE)

    B001WOGE01
    Text in Illustration
    *a

    Front view of wire harness connector

    (to Combination Meter Assembly)

    1. Disconnect the combination meter assembly connector.

      Tech Tips

      Disconnect the ECU connectors of other systems related to the speed signal, but do not disconnect the ECM connectors.

    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
      E7-4 (+S) - Body ground Ignition switch ON 4.5 to 5.5 V

    NG

    REPLACE ECM Click here

    OK

  5. CHECK COMBINATION METER (SPD SIGNAL OUTPUT WAVEFORM)

    B001X72E01
    Text in Illustration
    *a

    Component with harness connected

    (Combination Meter Assembly)

    1. Remove the combination meter assembly.

    2. Connect the combination meter assembly connector.

    3. Move the shift lever to N.

    4. Jack up the vehicle.

    5. Turn the ignition switch to ON.

    6. Check the voltage between the terminal of the combination meter assembly and body ground while the wheels are turned slowly.

      Standard Voltage
      Tester Connection Condition Specified Condition
      E7-4 (+S) - Body ground

      Ignition switch ON

      (Wheels turned slowly)

      		 Voltage generated intermittently

      Tech Tips


      • The output voltage fluctuates up and down, similarly to the diagram, when the wheels are turned slowly.

      • A voltage of 12 V or 5 V is output from each ECU and then input to the combination meter assembly.


    OK

    REPLACE ECM Click here

    NG

  6. CHECK COMBINATION METER ASSEMBLY (SPD SIGNAL INPUT WAVEFORM)

    B001X72E02
    Text in Illustration
    *a

    Component with harness connected

    (Combination Meter Assembly)

    1. Remove the combination meter assembly.

    2. Connect the combination meter assembly connector.

    3. Move the shift lever to N.

    4. Jack up the vehicle.

    5. Turn the ignition switch to ON.

    6. Check the voltage between the terminal of the combination meter assembly and body ground while the wheels are turned slowly.

      Standard Voltage
      Tester Connection Condition Specified Condition
      E7-3 (SI) - Body ground

      Ignition switch ON

      (Wheels turned slowly)

      		 Voltage generated intermittently

      Tech Tips

      The output voltage fluctuates up and down, similarly to the diagram, when the wheels are turned slowly.


    OK

    REPLACE COMBINATION METER ASSEMBLY Click here

    NG

  7. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - VSC ACTUATOR WITH ACTUATOR BRACKET ASSEMBLY)


    1. Disconnect the combination meter assembly connector.

    2. Disconnect the VSC actuator with actuator bracket assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E7-3 (SI) - A24-12 (SP1) Always Below 1 Ω
      E7-3 (SI) or A24-12 (SP1) - Body ground Always 10 kΩ or higher
      Result
      Result Proceed to
      OK (for LHD) A
      OK (for RHD) B
      NG C

    A

    REPLACE MASTER CYLINDER SOLENOID Click here

    B

    REPLACE MASTER CYLINDER SOLENOID Click here

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR