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Home >> Lexus >> 2020 >> RC F Base >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission System - Diagnostic Codes (1 Of 3) >> Automatic Transmission System >> DTC P0717: Input Speed Sensor Circuit No Signal; DTC P07BF: Input/Turbine Speed Sensor "A" Circuit Low; DTC P07C0: Input/Turbine Speed Sensor "A" Circuit High [11/2017 - ] >> Procedure
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DTC P0717: Input Speed Sensor Circuit No Signal; DTC P07BF: Input/Turbine Speed Sensor "A" Circuit Low; DTC P07C0: Input/Turbine Speed Sensor "A" Circuit High [11/2017 - ]: Procedure

  1. READ VALUE USING TECHSTREAM 
    1. Turn the engine switch off.
    2. Connect the Techstream to the DLC3.
    3. Turn the engine switch on (IG).
    4. Turn the Techstream on.
    5. Enter the following menus: Powertrain / ECT / Data List / SPD (NT), NT Sensor Voltage.
    6. 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 (NT) Input shaft speed Min.: 0 rpm
      Max.: 12750 rpm
      Lock-up is
      • ON (after warming up engine): Input turbine speed (NT) is equal to engine speed
      • OFF (idling with shift lever in N): Input turbine speed (NT) is nearly equal to engine speed
      Data is displayed in increments of 50 rpm
      NT Sensor Voltage NT sensor voltage Min.: 0.000 V
      Max.: 5.000 V
      Idling: 0.1 to 1.9 V -

      Powertrain > ECT > Data List 

      Tester Display
      SPD (NT)
      NT Sensor Voltage

      Result

      Result Proceed to
      Data List value is normal A
      Data List value is not normal B

    Result: 

    See step  5

    Result: 

    See step  2

  2. CHECK TRANSMISSION REVOLUTION SENSOR TERMINAL (NT TERMINAL) 
    1. Disconnect the F25 transmission wire connector.
      GTY510692Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Transmission Wire)
    2. Turn the engine switch on (IG).
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      F25-1 (NTB) - Body ground Engine switch on (IG) 11 to 14 V
    4. Turn the engine switch off.
    5. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      F25-2 (NTO) - Body ground Always 99 to 101 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  4

    Result: 

    OK 

    See step  3

  3. INSPECT TRANSMISSION WIRE (TRANSMISSION REVOLUTION SENSOR (NT)) 
    1. Disconnect the transmission revolution sensor (NT) connector.
      GTY511745Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Transmission Revolution Sensor (NT))
      *b Component without harness connected
      (Transmission Wire)

      Refer to REMOVAL [09/2014 - ]

    2. Disconnect the F25 transmission wire connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      Terminal 1 of the transmission revolution sensor (NT) connector - 1 (NTB) Always Below 1 Ω
      Terminal 2 of the transmission revolution sensor (NT) connector - 2 (NTO) Always Below 1 Ω
      Terminal 1 of the transmission revolution sensor (NT) connector or 1 (NTB) - Body ground Always 10 kΩ or higher
      Terminal 2 of the transmission revolution sensor (NT) connector or 2 (NTO) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE TRANSMISSION REVOLUTION SENSOR (NT). Refer to  COMPONENTS [09/2014 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE TRANSMISSION WIRE. Refer to  COMPONENTS [09/2014 - ] 

  4. CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - TCM) 
    1. Disconnect the F25 transmission wire connector.
    2. Disconnect the F8 TCM connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      F25-1 (NTB) - F8-21 (NTB) Always Below 1 Ω
      F25-2 (NTO) - F8-20 (NTO) Always Below 1 Ω
      F25-1 (NTB) or F8-21 (NTB) - Body ground Always 10 kΩ or higher
      F25-2 (NTO) or F8-20 (NTO) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR (TRANSMISSION WIRE - TCM) 

    Result: 

    OK 

    See step  5

  5. REPLACE TCM 
    1. Replace the TCM.

      Refer to COMPONENTS [09/2014 - ]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    PERFORM A/T CODE REGISTRATION. Refer to  REGISTRATION [09/2014 - ]