AUTOMATIC TRANSMISSION SYSTEM, Diagnostic DTC:P0717

DTC Code DTC Name
P0717 Turbine Speed Sensor Circuit No Signal

DESCRIPTION

This sensor detects the rotation speed of the turbine which shows the input shaft revolution speed. By comparing the input turbine speed signal (NT) with the counter gear speed signal (SP2), the ECM detects the shift timing of the gears and appropriately controls the engine torque and hydraulic pressure according to various conditions. Thus, providing smooth gear shifts.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
P0717 Turbine Speed Sensor Circuit No Signal

ECM detects conditions (a), (b) and (c) continuously for 5 sec. or more: (1-trip detection logic)


  • (a) Output shaft speed is 1000 rpm or more (Vehicle speed: 50 km/h (31 mph) or more)

  • (b) Park/neutral position switch assembly:


    • P input signal is OFF

    • NSW input signal is OFF

    • R input signal is OFF

  • (c) Transmission revolution sensor (NT): less than 300 rpm

  • Open or short in transmission revolution sensor (NT) circuit

  • Transmission revolution sensor (NT)

  • ECM

  • Automatic transmission (clutch, brake or gear, etc.)

 Comes on DTC stored

Reference (Using an oscilloscope):

Check the waveform between the terminals NT+ and NT- of the ECM connector.

A01MVOAE01
*a 1 V/DIV.
*b 2 ms./DIV.
Standard
Refer to the illustration.
Terminal NT+ - NT-
Tool setting 1 V/DIV., 2 ms./DIV.
Vehicle condition Engine idle speed (P or N position)

MONITOR DESCRIPTION

This DTC indicates that pulse are not output from the transmission revolution sensor (NT) (Turbine (input) speed sensor) or output irregularly. The NT terminal of the ECM detects the revolution speed signal from transmission revolution sensor (NT) (input RPM). The ECM outputs a gearshift signal comparing the transmission revolution sensor (NT) with the transmission revolution sensor (SP2).

While the vehicle is being driven in 4th, 5th or 6th gear with the shift lever in D, if the input shaft revolution (speed) is less than 300 rpm*1 with the output shaft revolution (speed) 1000 rpm or more*2, the ECM interprets this as malfunction, illuminates the MIL and stores the DTC.

*1: Pulse is not output or is irregularly output.

*2: The vehicle speed is approx. 50 km/h (31 mph) or more.

WIRING DIAGRAM

A01MU54E06
*a Transmission Revolution Sensor (NT)

CAUTION / NOTICE / HINT

Note

Perform registration and/or initialization when parts related to the automatic transmission are replaced.

Click here


  1. DATA LIST

    Tech Tips

    Using the GTS 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.

    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 GTS to the DLC3.

    4. Turn the engine switch on (IG).

    5. Turn the GTS on.

    6. Enter the following menus: Powertrain / Engine and ECT / Data List / SPD (NT).

    7. According to the display on the GTS, read the "Data List".


      Powertrain > Engine > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      SPD (NT) Input shaft speed

      Min.: 0 rpm

      Max.: 12750 rpm

      • Lock-up ON (after warming up engine): Input turbine speed (NT) equal to engine speed

      • Lock-up OFF (idling with shift lever in N): Input turbine speed (NT) nearly equal to engine speed

      		 Data is displayed in increments of 50 rpm.

      Powertrain > Engine > Data List
      Tester Display
      SPD (NT)

      Tech Tips


      • 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 malfunction, improper installation, or intermittent connection malfunction of the circuit.

PROCEDURE


  1. INSPECT TRANSMISSION REVOLUTION SENSOR (NT) INSTALLATION


    1. A01MXXEC19
      *a OK
      *b NG

      Check the transmission revolution sensor (NT) installation.

      OK
      The installation bolt is tightened properly and there is no clearance between the sensor and transmission case.
      Result
      Proceed to
      OK
      NG

    NG

    SECURELY INSTALL TRANSMISSION REVOLUTION SENSOR (NT) OR REPLACE TRANSMISSION REVOLUTION SENSOR (NT) Click here

    OK

  2. INSPECT TRANSMISSION REVOLUTION SENSOR (NT)


    1. A01MXQ0C50
      *a

      Component without harness connected

      (Transmission Revolution Sensor (NT))

      Disconnect the F48 transmission revolution sensor (NT) connector from the transmission.

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 - 2 20°C (68°F) 560 to 680 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE TRANSMISSION REVOLUTION SENSOR (NT) Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (TRANSMISSION REVOLUTION SENSOR (NT) - ECM)


    1. A01MU8JC04
      *a

      Rear view of wire harness connector

      (to ECM)

      Connect the transmission revolution sensor (NT) connector.

    2. Disconnect the F4 ECM connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      F4-16 (NT+) - F4-15 (NT-) 20°C (68°F) 560 to 680 Ω

    4. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for short)
      Tester Connection Condition Specified Condition
      F4-16 (NT+) - Body ground Always 10 kΩ or higher
      F4-15 (NT-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE ECM Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR