AUTOMATIC TRANSMISSION SYSTEM, Diagnostic DTC:P0500

DTC Code DTC Name
P0500 Vehicle Speed Sensor Malfunction

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 TCM via the combination meter. The TCM determines the vehicle speed based on the frequency of this pulse signal.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
P0500 Vehicle Speed Sensor Malfunction While the vehicle is being driven at 9 km/h (5.59 mph) or more, no vehicle speed sensor signal is transmitted to the TCM for 5 seconds or more (2-trip detection logic).

  • Open or short in speed signal SPD1 circuit

  • Combination meter system

  • TCM

 Comes on DTC stored

MONITOR DESCRIPTION

The TCM assumes that the vehicle is being driven when the indicated vehicle speed is more than 9 km/h (5.59 mph). If there is no speed signal from the combination meter despite this condition being met, the TCM interprets this as a malfunction in the speed signal circuit. The TCM then illuminates the MIL and stores the DTC.

WIRING DIAGRAM

B003L0QE15
for LHD
*a No. 32 Junction Connector
*b Combination Meter Assembly
B003L0QE16
for RHD
*a No. 14 Junction Connector
*b Combination Meter Assembly

CAUTION / NOTICE / HINT

Tech Tips

After the repair, clear the DTCs and perform the following procedure to check that DTCs are not output.


  1. Turn the ignition switch to ON and wait for 3 seconds or more.*1

  2. Drive the vehicle at 9 km/h (5.59 mph) or more for 5 seconds or more.*2

  3. Turn the ignition switch off.

  4. Perform steps (*1) through (*2) again.

  5. Check for DTCs again.

    Click here

PROCEDURE


  1. READ VALUE USING GTS (VEHICLE SPEED)


    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 for a speedometer malfunction.

    2. Connect the GTS to the DLC3.

    3. Turn the ignition switch to ON.

    4. Turn the GTS on.

    5. Enter the following menus: Powertrain / ECT / Data List.

    6. Drive the vehicle.

    7. Read the value displayed on the GTS.


      Powertrain > ECT > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Vehicle Speed Vehicle speed

      Min.: 0 km/h (0 mph)

      Max.: 255 km/h (158 mph)

      		 Actual vehicle speed -

      Powertrain > ECT > Data List
      Tester Display
      Vehicle Speed
      OK
      Vehicle speed displayed on the GTS and speedometer display are equal.
      Result
      Proceed to
      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
      Proceed to
      NEXT

    NEXT

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


    1. Disconnect the G8 combination meter assembly connector.

    2. Disconnect the G147 TCM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G8-19 (+S) - G147-25 (SPD1) Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE TCM Click here

    NG

  4. CHECK HARNESS AND CONNECTOR (JUNCTION CONNECTOR - TCM)


    1. for LHD:

      Disconnect the G151 NO. 32 junction connector.

    2. for RHD:

      Disconnect the G115 NO. 14 junction connector.

    3. Disconnect the G147 TCM connector.

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

      Standard Resistance
      for LHD:
      Tester Connection Condition Specified Condition
      G151-6 - G147-25 (SPD1) Always Below 1 Ω
      for RHD:
      Tester Connection Condition Specified Condition
      G115-8 - G147-25 (SPD1) Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

    REPAIR OR REPLACE JUNCTION CONNECTOR

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR