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DTC P0717 Turbine Speed Sensor Circuit No Signal: Wiring Diagram

WARNING: This page is about a different car, the 2006 Lexus IS 350. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Wiring Diagram - Turbine Speed Sensor Circuit No Signal
G04052876Courtesy 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".
    DATA LIST

    Item Measurement Item/Range (display) Normal Condition
    SPD (NT) Input Turbine Speed/display: 50 r/min HINT:
    • Lock-up ON (After warming up the engine);

      Input Turbine speed (NT) equal to the engine speed.

    • Lock-up OFF (Idling at N position);

      Input Turbine speed (NT) nearly equal to the engine speed.

    HINT:

    • SPD (NT) is always 0 while driving:

      Open or short in the sensor or circuit.

    • SPD (NT) is always more than 0 and less than 300 rpm while driving the vehicle at 50 km/h (31 mph) or more:

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

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

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

    NG : SECURELY INSTALL SPEED SENSOR OR REPLACE SPEED SENSOR 

    Fig 2: Identifying Speed Sensor Clearance
    G04052877Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK : GO TO NEXT STEP 

  2. INSPECT SPEED SENSOR (NT) 
    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

      Tester Connection Specified Condition 20°C (68°F)
      1 - 2 560 to 680 Ω
      Fig 3: Inspecting Speed Sensor (NT)
      G04052878Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG : REPLACE SPEED SENSOR (NT) 

    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

      Tester Connection Specified Condition 20°C (68°F)
      E4-21 (NT+) - E4-20 (NT-) 560 to 680 Ω
    4. Measure the resistance according to the value(s) in the table below.
      Fig 4: Identifying ECM E4 Connector
      G04052879Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard resistance (Check for short) 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Specified Condition
      E4-21 (NT+) - Body ground 10 kΩ or higher
      E4-20 (NT-) - Body ground  

    NG : REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK : REPLACE ECM 

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