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Home >> Lexus >> 2017 >> IS 300 F Sport >> Repair and Diagnosis >> External Pages >> Different car >> Section 102 (Automatic Transmission System (Aa80E) - Diagnostic Codes (1 Of 2)) >> Automatic Transmission System >> DTC P0500: Vehicle Speed Sensor "A"; DTC P0502: Vehicle Speed Sensor "A" Circuit Low; DTC P0503: Vehicle Speed Sensor "A" Intermittent / Erratic / High [11/2021 - ] >> Caution / Notice / Hint

Caution / Notice / Hint

WARNING: This page is about a different car, the 2024 Lexus IS 500, 2023 Lexus IS 500, and 2022 Lexus IS 500. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:

HINT: 

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

  1. Turn the engine switch on (IG) and wait for 3 seconds or more.
  2. Perform the D Position Shift Test in Road Test.

    Refer to ROAD TEST [11/2021 - ]

  3. Check for DTCs again.

    Refer to DTC CHECK / CLEAR [11/2021 - ]

  1. DATA LIST 
    NOTE:

    In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.

    HINT: 

    Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time.

    1. Warm up the engine.
    2. Turn the engine switch off.
    3. Connect the Techstream to the DLC3.
    4. Turn the engine switch on (IG).
    5. Turn the Techstream on.
    6. Enter the following menus: Powertrain / ECT / Data List / SPD (SP2).
    7. Read the Data List according to the display on the Techstream.

      Powertrain > ECT > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      SPD (SP2) Output shaft speed Min.: 0 km/h (0 mph)
      Max.: 255 km/h (158 mph)
      Vehicle stopped: 0 km/h (0 mph)
      (output shaft speed is equal to vehicle speed)
      -

      Powertrain > ECT > Data List 

      Tester Display
      SPD (SP2)

      HINT: 

      • SPD (SP2) is always 0 while driving: Open or short in the sensor or circuit.
      • The SPD (SP2) value displayed on the Techstream is much lower than the actual vehicle speed: Sensor malfunction, improper installation, or intermittent connection malfunction of the circuit.
    Inspection Procedure
    Transmission Control Switch Test With the vehicle stationary and the shift lever in D, move the shift lever to M and return it to D. Check that the meter display changes from D to the appropriate M and then back again.
    M Position Test While driving with the shift lever in M, operate the shift paddle to "+" and "-". Check that the meter display changes accordingly.
    D Position Shift Test While driving the vehicle normally, check that the transmission shifts up and down through each gear properly.
    Lock-up Function While driving on a level surface at a constant speed in the lock-up range with the shift lever in D, lightly depress the accelerator pedal and check that the engine speed does not change abruptly.
    P Position Test Stop the vehicle on an incline (approximately 5° or more). Then move the shift lever to P and release the parking brake. Check that the parking lock pawl holds the vehicle in place.
    Abnormal Noise and Vibration Check for abnormal noise and vibration while driving the vehicle forward and backward, and during shift operations.
    Fluid Leakage After performing all other road test inspections, check for fluid leakage.