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Home >> Toyota >> 2019 >> Sienna Limited, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 5 (Automatic Transaxle System [UA80E] - Diagnostic Codes (1 Of 3)) >> Automatic Transaxle System >> DTC P0500-31: Vehicle Speed Sensor "A" No Signal [11/2017 - ] >> Procedure

DTC P0500-31: Vehicle Speed Sensor "A" No Signal [11/2017 - ]: Procedure

WARNING: This page is about a different variant/trim than selected.
  1. READ VALUE USING TECHSTREAM (VEHICLE SPEED) 
    1. Connect the Techstream to the DLC3.
    2. Turn the Ignition switch to ON.
    3. Turn the Techstream on.
    4. Enter the following menus: Powertrain / Transmission / Data List.
    5. Drive the vehicle.
    6. In accordance with the display on the Techstream, read the Data List.

      Transmission

      Techstream 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.
        • There is a delay in when the vehicle speed data 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.

      OK

      Vehicle speed displayed on Techstream and speedometer display are equal.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    CHECK FOR INTERMITTENT PROBLEMS. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2017 - ] 

    Result: 

    NG 

    See step  2

  2. CHECK COMBINATION METER SYSTEM 
    1. Check the circuits that send vehicle speed signals to this system in the meter system.

      Refer to Speed Signal Circuit [11/2017 - ]

    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 D145 combination meter assembly connector.
    2. Disconnect the A69 ECM connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      D145-3 (+S) - A69-39 (SPD) Always Below 1 Ω
      D145-3 (+S) or A69-39 (SPD) - Body ground and other terminals Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  4

  4. REPLACE ECM 
    1. Replace the ECM.

      Refer to COMPONENTS [08/2016 - ]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    PERFORM A/T CODE REGISTRATION. Refer to  REGISTRATION [08/2016 - ]