SFI SYSTEM, Diagnostic DTC:P0500

DTC Code DTC Name
P0500 Vehicle Speed Sensor

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 4-pulse signal and outputs it to the ECM via the combination meter assembly. The ECM determines the vehicle speed based on the frequency of this pulse signal.

B001D1CE88
*a 4-Pulse
*b from Wheel Speed Sensor
*c Skid Control ECU
*d Combination Meter
DTC No. DTC Detection Condition Trouble Area
P0500 While the vehicle is being driven, no vehicle speed sensor signal is transmitted to the ECM (2 trip detection logic).

  • Open or short in speed signal circuit

  • Combination meter assembly

  • ECM

WIRING DIAGRAM


B001DLGE35
*1 from Skid Control ECU
*2 Combination Meter

B001DLGE42
*1 from Skid Control ECU
*2 Combination Meter

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 assembly 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 Click here.


    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 engine switch on (IG).

    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 GTS and speedometer display are equal.

    OK

    CHECK FOR INTERMITTENT PROBLEMS Click here

    NG

  3. CHECK COMBINATION METER ASSEMBLY (+S VOLTAGE)

    B001EFSE01
    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
      G6-32 (+S) - Body ground Engine switch on (IG) 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)

    B001FC5E03

    1. Move the shift lever to N.

    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
      G6-32 (+S) - Body ground Engine switch on (IG) Voltage generated intermittently
      Text in Illustration
      *a

      Component with harness connected

      (combination meter assembly)

      Tech Tips

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


    NG

    REPLACE COMBINATION METER ASSEMBLY Click here

    OK

  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 (Check for Open)
      for Automatic Transmission
      Tester Connection Condition Specified Condition
      G6-32 (+S) - G56-12 (SPD) Always Below 1 Ω
      for Manual Transmission
      Tester Connection Condition Specified Condition
      G6-32 (+S) - G55-18 (SPD) Always Below 1 Ω
      Standard Resistance (Check for Open)
      for Automatic Transmission
      Tester Connection Condition Specified Condition
      G6-32 (+S) or G56-12 (SPD) - Body ground Always 10 kΩ or higher
      for Manual Transmission
      Tester Connection Condition Specified Condition
      G6-32 (+S) or G55-18 (SPD) - Body ground Always 10 kΩ or higher

    4. Reconnect the combination meter assembly connector.

    5. Reconnect the ECM connector.


    OK

    REPLACE ECM Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR