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Home >> Lexus >> 2006 >> IS 250 RWD, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Automatic Transmission (A960E)) >> Automatic Transmission System >> DTC P0500 Vehicle Speed Sensor "A" >> Wiring Diagram

DTC P0500 Vehicle Speed Sensor "A": Wiring Diagram

WARNING: This page is about a different variant/trim than selected.
Fig 1: Wiring Diagram - Vehicle Speed Sensor "A"
G04045717Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  1. DATA LIST 

    HINT:

    According to the DATA LIST displayed by the intelligent tester, you can read the value of the switch, sensor, actuator and so on without parts removal. Reading the DATA LIST as the first step of troubleshooting is one method to shorten labor time.

    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.
    1. Warm up the engine.
    2. Turn the engine switch off.
    3. Connect the intelligent tester together with the CAN VIM (controller area network vehicle interface module) to the DLC3.
    4. Turn the engine switch on (IG) position.
    5. Turn on the tester.
    6. Select the item "DIAGNOSIS / ENHANCED OBD II / DATA LIST".
    7. According to the display on the tester, read the "DATA LIST".
    ITEM NORMAL CONDITION CHART

    Item Measurement Item/Range (display Normal Condition
    SPD (SP2) Output shaft Speed/ min.: 0 km/h (0 mph) max.: 255 km/h (158 mph) Vehicle stopped: 0 km/h (0 mph)
    HINT:
    Equal to vehicle speed

    HINT:

    • SPD (SP2) is always 0 while driving:

      Open or short in the sensor or circuit.

    • The SPD (SP2) value displayed on the tester is much lower than the actual vehicle speed:

      Sensor trouble, improper installation, or intermittent connection trouble of the circuit.

  1. INSPECT SPEED SENSOR INSTALLATION 
    1. Check the speed sensor (SP2) installation.

    OK: 

    The installation bolt is tightened properly and there is no clearance between the sensor and transmission case. 

    Fig 2: Identifying Speed Sensor Clearance
    G04045718Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG : SECURELY INSTALL SPEED SENSOR OR REPLACE SPEED SENSOR 

    OK : Go to next Step 

  2. INSPECT SPEED SENSOR (SP2) 
    1. Disconnect the speed sensor connector from the transmission.
    2. Measure the resistance according to the value(s) in the table below.

    Standard resistance 

    TESTER CONNECTION SPECIFIED CONDITION CHART

    Tester Connection Specified Condition 20°C (68°F)
    1 - 2 560 to 680 Ω
    Fig 3: Inspecting Speed Sensor (SP2)
    G04045719Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG : REPLACE SPEED SENSOR (SP2) 

    OK : Go to next Step 

  3. CHECK HARNESS AND CONNECTOR (SPEED SENSOR - ECM) 
    1. Connect the speed sensor connector.
    2. Disconnect the ECM connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Specified Condition 20°C (68°F)
      E4-23 (SP2+) - E4-22 (SP2-) 560 to 680 Ω
      Fig 4: Identifying ECM E4 Connector
      G04045720Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Measure the resistance according to the value(s) in the table below.

    Standard resistance (Check for short) 

    TESTER CONNECTION SPECIFIED CONDITION CHART

    Tester Connection Specified Condition
    E4-23 (SP2+) - Body ground 10 kΩ or higher
    E4-22 (SP2-) - Body ground  

    NG : REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK : REPLACE ECM 

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