ECD SYSTEM, Diagnostic DTC:P0500

DTC Code DTC Name
P0500 Vehicle Speed Sensor "A"

DESCRIPTION

Vehicles which are equipped with a manual transmission detect the vehicle speed using the speed sensor. The speed sensor transmits a 4-pulse signal for every revolution of the rotor shaft, which is rotated by the transmission output shaft via the driven gear. The 4-pulse signal is converted into a more precise rectangular waveform by the waveform shaping circuit inside the combination meter. The signal is then transmitted to the ECM. The ECM determines the vehicle speed based on the frequency of the pulse signal.

A115899E07

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

P0500

Vehicle Speed Sensor "A"

  • Conditions (a), (b), (c) and (d) are met for 8 seconds or more (2 trip detection logic):

    (a) Engine coolant temperature is higher than 70°C (158°F).

    (b) engine speed is 1500 to 4000 rpm

    (c) Injection volume is 23 mm3/st or more.

    (d) No speed signal is input to the ECM.

  • Conditions (a) and (b) are met for 6 seconds or more (2 trip detection logic):

    (a) During the fuel-cut operation.

    (b) No speed signal is input to the ECM.

  • Open or short in speedometer circuit

  • Speedometer assembly

  • ECM

Comes on

DTC stored
Table 1. Related Data List

DTC No.

Data List

P0500

Vehicle Speed

CONFIRMATION DRIVING PATTERN

DTC No.

DTC Detection Drive Pattern

P0500

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

WIRING DIAGRAM

A298514E02

CAUTION / NOTICE / HINT

Note:

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

Tip:

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 is normal.

      Tip:

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

      OK

      The vehicle speed sensor is operating normally.

    Result

    Proceed to

    OK

    NG
    NG

    CHECK SPEEDOMETER CIRCUITClick 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 / Data List / All Data / Vehicle Speed.

      Powertrain > Engine > Data List

      Tester Display

      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

    Proceed to

    OK

    NG
    OK

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIREDClick here

    NG

  3. CHECK TERMINAL VOLTAGE (+S VOLTAGE)

    1. A127854C02

      *a

      Front view of wire harness connector

      (to Combination Meter)

      Disconnect the combination meter 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

      Condition

      Specified Condition

      G16-6 (+S) - Body ground

      Ignition switch ON

      4.5 to 5.5 V

    Result

    Proceed to

    OK

    NG
    NG

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

    OK

  4. CHECK COMBINATION METER ASSEMBLY (SPD SIGNAL WAVEFORM)

    1. Turn the ignition switch to ON.

    2. A205820C02

      *a

      Component with harness connected

      (Combination Meter Assembly)

      Move the shift lever to neutral.

    3. Jack up the vehicle.

    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

      Condition

      Specified Condition

      G16-6 (+S) - Body ground

      Ignition switch ON

      Voltage generated intermittently
      Tip:

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

      Result

      Proceed to

      OK

      NG
    OK

    REPLACE ECMClick here

    NG

  5. REPLACE COMBINATION METER ASSEMBLY

    1. Replace the combination meter assembly.

      Click here

    Result

    Proceed to

    NEXT
    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIREDClick here

  6. 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 to the value(s) in the table below.

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      G16-6 (+S) - A61-14 (SPD)

      Always

      Below 1 Ω

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTORClick here

    OK

  7. REPLACE ECM

    1. Replace the ECM.

      Click here

    Result

    Proceed to

    NEXT
    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIREDClick here

  8. CHECK SPEEDOMETER CIRCUIT

    1. Check the speedometer circuit.

      Click hereClick here

      Tip:

      Inspect the brake actuator assembly and speed sensor.

    Result

    Proceed to

    NEXT
    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIREDClick here

  9. REPAIR OR REPLACE HARNESS OR CONNECTOR

    1. Repair or replace the harness or connector.

    Result

    Proceed to

    NEXT
    NEXT

  10. 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.

      Powertrain > Engine > Clear DTCs

    5. Turn the ignition switch off.

    6. Start the engine.

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

    8. Enter the following menus: Powertrain / Engine / Trouble Codes.

      Powertrain > Engine > Trouble Codes

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

    Result

    Proceed to

    NEXT
    NEXT

    END