SFI SYSTEM (w/ Secondary Air Injection System), Diagnostic DTC:P0500

DTC Code DTC Name
P0500 Vehicle Speed Sensor

DESCRIPTION

The vehicle speed sensor outputs a 4 pulse signal for every revolution of the rotor shaft, which is rotated by the transaxle output shaft via the driven gear. After this signal is converted into a more precise rectangular waveform by the waveform shaping circuit inside the combination meter, it is then transmitted to the ECM. The ECM determines the vehicle speed based on the frequency of the pulse signal.

A003CREE01
DTC No. DTC Detection Condition Trouble Area
P0500 While vehicle is being driven, no vehicle speed sensor signal is sent to ECM (2 trip detection logic).
  • Open or short in speed signal circuit

  • Combination meter

  • Speedometer sensor

  • ECM

WIRING DIAGRAM

A003BUEE01

INSPECTION PROCEDURE

Tech Tips

Read freeze frame data using the intelligent tester. 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. READ VALUE USING INTELLIGENT TESTER (VEHICLE SPEED)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the intelligent tester 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 intelligent tester.

      OK
      Vehicle speeds displayed on intelligent tester and speedometer display are equal.

    NG
    OK
  2. CHECK COMBINATION METER SYSTEM


    1. Inspect the circuits that send vehicle speed signals to this system in the meter system Click here.

    2. During inspection for the meter section, if there is an instruction that indicates to go back to inspections for each system, proceed to the next step.


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


    1. Disconnect the ECM connector.

    2. Disconnect the combination meter connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H20-6 (+S) - B71-38 (SPD) Always Below 1 Ω

    NG
    OK
  4. CHECK HARNESS AND CONNECTOR (ECM - JUNCTION CONNECTOR)


    1. Disconnect the ECM connector.

    2. Disconnect the junction connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      B80-8 - B71-38 (SPD) Always Below 1 Ω

    NG
    OK