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Home › Scion › 2008 › xB Automatic › Repair and Diagnosis › Transmission › Automatic Trans › U241E Automatic Transaxle › Automatic Transaxle System › DTC P0717 Input Speed Sensor Circuit No Signal › Inspection Procedure

Inspection Procedure

  1. DATA LIST 

    HINT:

    Using an intelligent tester or Techstream Data List allows switch, sensor, actuator and other item values to be read without removing any parts. Reading the Data List early in troubleshooting is one way to save 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 ignition switch to OFF.
    3. Connect the intelligent tester or Techstream to the DLC3.
    4. Turn the ignition switch to ON and turn the tester switch ON.
    5. Enter the following menus:
      1. Intelligent tester - Select: DIAGNOSIS / ENHANCED OBD II / DATA LIST.
      2. Techstream - Select: Powertrain / Engine and ECT / Data List.
    6. Follow the instructions on the tester and read the Data List.
      1. Intelligent tester
        DATA LIST - INTELLIGENT TESTER

        Tester Display Measurement Item/Range Normal Condition Diagnostic Note
        SPD (NT) Input turbine speed/ Min.: 0 rpm Max.: 12,750 rpm
        • Lock-up ON (after warming up engine): Input turbine speed (NT) equal to engine speed.
        • Lock-up OFF (idling with shift lever on N): Input turbine speed (NT) is nearly equal to engine speed.
        		 Data is displayed in increments of 50 rpm
      2. Techstream
        DATA LIST - TECHSTREAM

        Tester Display Measurement Item/Range Normal Condition Diagnostic Note
        SPD (NT) Input turbine speed/
        Min.: 0 rpm
        Max.: 12,750 rpm
        • Lock-up ON (after warming up engine):

          Input turbine speed (NT) equal to engine speed.

        • Lock-up OFF (idling with shift lever on N):

          Input turbine speed (NT) is nearly equal to engine speed.

        		 Data is displayed in increments of 50 rpm

        HINT:

        • SPD (NT) is always 0 rpm while driving:

          Open or short in the sensor or circuit.

        • SPD (NT) is always more than 0 rpm 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 NT (INSTALLATION) 
    1. Check the speed sensor NT installation.

      OK: 

      Installation bolt is tightened properly and there is no clearance between the sensor and transaxle case. 

      2. Fig 1: Identifying Clearance Between Sensor And Transaxle Case
      G04942864Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG : SECURELY INSTALL SENSOR OR REPLACE SPEED SENSOR NT 

    OK: Go to next step 

  2. INSPECT SPEED SENSOR NT 
    1. Disconnect the B31 speed sensor NT connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      1 - 2 20°C (68°F) 560 to 680 Ω
      3. Fig 2: Inspecting Speed Sensor NT
      G05387983Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG : REPLACE SPEED SENSOR NT  (See REMOVAL  )

    OK: Go to next step 

  3. CHECK HARNESS AND CONNECTOR (SPEED SENSOR NT - ECM) 
    1. Disconnect the B33 ECM connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      B33-125 (NT+) - B33-124 (NT-) 20°C (68°F) 560 to 680 Ω
      B33-125 (NT+) - Body ground Always 10 kΩ or higher
      B33-124 (NT-) - Body ground Always 10 kΩ or higher
      3. Fig 3: Identifying B33 ECM Connector
      G05387984Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG : REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK : REPLACE ECM  (See REMOVAL )

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