AUTOMATIC TRANSMISSION SYSTEM, Diagnostic DTC:P0715, P0717

DTC Code DTC Name
P0715 Input / Turbine Speed Sensor Circuit Malfunction
P0717 Input Speed Sensor Circuit No Signal

DESCRIPTION

The speed sensor (NT) detects the input shaft rotation speed and inputs it into the TCM as a signal.

Based on the transmission speed sensor (NT) signal and the transmission speed sensor (NC3 and SP2) signal, the TCM controls engine torque and shift timing. Also, based on the input shaft rotation speed and the engine rpm signal, lock-up control is performed.

A001E7YE06
DTC No.

DTC Detection Condition


  1. Diagnosis Condition

  2. Malfunction Status

  3. Malfunction Time

  4. Other

 Trouble Area
P0715

  1. +B voltage is 10 V or more, and no speed sensor (NT) signal malfunction is detected

  2. Speed sensor (NT) input voltage is less than 0.1 V, or more than 1.9 V

  3. 4.5 seconds

  4. 1 trip detection logic

  • Speed sensor (NT)

  • Transmission wire

  • Harness and connector

  • TCM
P0717

  1. When shifting between 2nd and 8th gear, output shaft rotation speed is 1000 rpm or more, +B voltage is 10 V or more, and PNP switch and speed sensor (NT) are normal

  2. Speed sensor (NT) value is less than 300 rpm

  3. 5 seconds

  4. 1 trip detection logic

  • Speed sensor (NT)

  • Transmission wire

  • Harness and connector

  • TCM

MONITOR DESCRIPTION

The NT terminal of the TCM detects a pulse signal from the speed sensor (NT) (input rpm). The TCM calculates gear shifts comparing the signal from the speed sensor (NT) with that from the speed sensor (SP2).

If the sensor voltage is below 0.1 V or higher than 1.9 V, the TCM interprets this as a fault, illuminates the MIL and stores the DTC.

Also, while the vehicle is operating in 2nd, 3rd, 4th, 5th, 6th, 7th or 8th gear with the shift lever in D, if the input shaft speed is less than 300 rpm*1 although the output shaft speed is more than 1,000 rpm*2, the TCM interprets this as a fault, illuminates the MIL and stores the DTC.

*1: A pulse is not output or is irregularly output.

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

WIRING DIAGRAM

A001DKKE26
*a Speed Sensor NT
*b Transmission Wire

CAUTION / NOTICE / HINT

Tech Tips

Using the intelligent tester's 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 engine switch off.

  3. Connect the intelligent tester to the DLC3.

  4. Turn the engine switch on (IG).

  5. Turn the intelligent tester ON.

  6. Enter the following menus: Powertrain / ECT / Data List.

  7. Follow the instructions on the tester and read the Data List.

TCM:
Tester Display Measurement Item/Range Normal Condition Diagnostic Note
SPD (NT)

Input shaft speed/

Min.: 0 rpm

Max.: 12750 rpm

Lock-up is


  • Max.: 12750 rpm ON (after warming up engine): Input turbine speed (NT) is equal to engine speed

  • 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

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

PROCEDURE


  1. CHECK SPEED SENSOR TERMINAL (NT TERMINAL)


    1. A001B0TE01
      *1 Front view of wire harness connector: (to Transmission Wire)

      Disconnect the E50 transmission wire connector.

    2. Turn the engine switch on (IG).

    3. Measure the voltage of the wire harness side connector.

      Standard voltage
      Tester Connection Switch Condition Specified Condition
      E50-1 (NTB) - Body ground Engine switch on (IG) 11 to 14 V

    4. Turn the engine switch off.

    5. Measure the resistance of the wire harness side connector.

      Standard resistance
      Tester Connection Condition Specified Condition
      E50-2 (NTO) - Body ground Always 100 Ω

    NG

    CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - TCM) Click here

    OK

  2. INSPECT TRANSMISSION WIRE (SPEED SENSOR NT)


    1. A001DJBE01
      *a Front view of wire harness connector: (to Speed Sensor NT)
      *b Component without harness connected: (Transmission Wire)

      Disconnect the speed sensor (NT) connector.

    2. Disconnect the E50 transmission wire connector.

    3. Measure the resistance of the transmission wire.

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

    OK

    REPLACE SPEED SENSOR Click here

    NG

    REPAIR OR REPLACE TRANSMISSION WIRE Click here

  3. CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - TCM)


    1. Disconnect the E50 transmission wire connector.

      A001CF3E10
      *1 Front view of wire harness connector: (to Transmission Wire)
      *2 TCM Connector

    2. Disconnect the E7 TCM connector.

    3. Measure the resistance of the wire harness side connectors.

      Standard resistance
      Tester Connection Condition Specified Condition
      E50-1 (NTB) - E7-31 (NTB) Always Below 1 Ω
      E50-2 (NTO) - E7-25 (NTO) Always Below 1 Ω
      E50-1 (NTB) or E7-31 (NTB) - Body ground Always 10 kΩ or higher
      E50-2 (NTO) or E7-25 (NTO) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. REPLACE TCM


    1. Replace the TCM Click here.


    NEXT

    PERFORM AT REGISTRATION Click here