SFI SYSTEM(w/ EGR 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.

A115899E32

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Warning Indicate

Memory

P0500

Vehicle Speed Sensor "A"

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

Comes on

DTC stored

MONITOR DESCRIPTION

The ECM assumes that the vehicle is being driven when the vehicle speed measured by the output speed sensor (SP2) is more than 9 km/h (5.6 mph). If there is no speed signal from the combination meter despite this condition being met, the ECM interprets this as a malfunction in the speed signal circuit. The ECM then illuminates the MIL and stores the DTC.

MONITOR STRATEGY

Required Sensors/Components (Main)

Vehicle Speed Sensor, Combination meter assembly and Skid control ECU

Required Sensors/Components (Related)

Park/neutral position switch assembly, Output speed sensor (SP2)

Frequency of Operation

Continuous

TYPICAL ENABLING CONDITIONS

Vehicle speed at output speed sensor (SP2)

9 km/h (5.59 mph) or more

TYPICAL MALFUNCTION THRESHOLDS

Vehicle speed sensor signal

No pulse input

CONFIRMATION DRIVING PATTERN

A232052E08

  1. Connect the intelligent tester to the DLC3.

  2. Turn the engine switch on (IG) and turn the tester on.

  3. Clear DTCs (even if no DTCs are stored, perform the clear DTC operation).

  4. Turn the engine switch off and wait for at least 30 seconds.

  5. Turn the engine switch on (IG) and turn the tester on [A].

  6. Start the engine.

  7. Drive the vehicle at 24 km/h (15 mph) or more for a total of 30 seconds or more [B].

    CAUTION:

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

  8. Stop the vehicle.

  9. Enter the following menus: Powertrain / Engine and ECT / DTC [C].

  10. Read the pending DTCs.

    Tip:

    • If a pending DTC is output, the system is malfunctioning.

    • If a pending DTC is not output, perform the following procedure.

  11. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.

  12. Input the DTC: P0500.

  13. Check the DTC judgment result.

    Tester Display

    Description

    NORMAL

    • DTC judgment completed

    • System normal

    ABNORMAL

    • DTC judgment completed

    • System abnormal

    INCOMPLETE

    • DTC judgment not completed

    • Perform driving pattern after confirming DTC enabling conditions

    N/A

    • Unable to perform DTC judgment

    • Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit
    Tip:

    • If the judgment result shows NORMAL, the system is normal.

    • If the judgment result shows ABNORMAL, the system has a malfunction.

WIRING DIAGRAM

A185017E05

CAUTION / NOTICE / HINT

Tip:

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 engine switch on (IG).

    3. Turn the tester on.

    4. Enter the following menus: Powertrain / Engine and ECT / Data List / Vehicle Speed.

      Powertrain > Engine and ECT > Data List

      Tester Display

      Vehicle Speed

    5. Drive the vehicle.

    6. Read the value displayed on the tester.

      OK

      Vehicle speeds displayed on tester and speedometer display are equal.

      Result

      Result

      OK

      NG
    OK

    CHECK FOR INTERMITTENT PROBLEMS

    Click here

    NG

  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.

      Result

      Result

      NEXT
    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

      G3-32 (+S) - G44-18 (SPD)

      Always

      Below 1 Ω

    4. Reconnect the ECM connector.

    5. Reconnect the combination meter connector.

      Result

      Result

      OK

      NG
    OK

    REPLACE ECM

    Click here

    NG

  4. CHECK HARNESS AND CONNECTOR (ECM - NO. 4 JUNCTION BLOCK)

    1. Disconnect the ECM connector.

    2. Disconnect the No. 4 junction block connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      4A-93 - G44-18 (SPD)

      Always

      Below 1 Ω

    4. Reconnect the ECM connector.

    5. Reconnect the No. 4 junction block connector.

      Result

      Result

      OK

      NG
    OK

    REPAIR OR REPLACE NO. 4 JUNCTION BLOCK

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR