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Home >> Lexus >> 2017 >> IS 300 F Sport >> Repair and Diagnosis >> External Pages >> Different car >> Section 176 (Automatic Transmission System (A760H) - Diagnostic Codes (1 Of 3)) >> AUTOMATIC TRANSMISSION SYSTEM (for 2GR-FKS) >> DTC P0500-31: Vehicle Speed Sensor "A" No Signal [10/2017 - ] >> Procedure

DTC P0500-31: Vehicle Speed Sensor "A" No Signal [10/2017 - ]: Procedure

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  1. READ VALUE USING TECHSTREAM (VEHICLE SPEED) 
    1. Drive the vehicle and check whether the operation of the speedometer in the combination meter assembly is normal.

      HINT: 

      • 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 Techstream to the DLC3.
    3. Turn the engine switch on (IG).
    4. Turn the Techstream on.
    5. Enter the following menus: Powertrain / Transmission / Data List / Vehicle Speed.

      Powertrain > Transmission > 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
      • This is the current vehicle speed.
      • The vehicle speed is detected using the wheel speed sensors.
        • Vehicle speed data is delayed when it is displayed. Therefore, even if the vehicle speed listed in the freeze frame data is 0 km/h (0 mph), this does not always mean that the malfunction occurred when the vehicle was stopped.

      Powertrain > Transmission > Data List 

      Tester Display
      Vehicle Speed
    6. Drive the vehicle.
    7. Read the value displayed on the Techstream.

      OK

      Vehicle speeds displayed on the Techstream and speedometer display are equal.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    CHECK FOR INTERMITTENT PROBLEMS. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2017 - 09/2020]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [09/2020 - 11/2021]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2021 - 09/2022]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [09/2022 - ] 

    Result: 

    NG 

    See step  2

  2. CHECK METER / GAUGE SYSTEM (SPEED SIGNAL CIRCUIT) 
    1. Inspect the circuits that send vehicle speed signals to this system in the combination meter system.

      Refer to Speed Signal Circuit [10/2017 - 09/2020] , or refer to Speed Signal Circuit [09/2020 - 11/2021] , or refer to Speed Signal Circuit [11/2021 - ]

    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

    Result: 

    NEXT 

    See step  3

  3. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - ECM) 
    1. Disconnect the K3 combination meter assembly connector.
    2. Disconnect the A106 ECM connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      K3-19 (+S) - A106-39 (SPD) Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE ECM. Refer to  COMPONENTS [10/2017 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

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