AUTOMATIC TRANSAXLE 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 input speed sensor NT detects the rotation speed of the turbine, which indicates the input shaft revolution (speed) of the transaxle. By comparing the input speed sensor NT signal with the output speed sensor NC signal, the TCM 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.

A01IJ8KC02
*1 Counter Gear *2 Clutch Drum
*3 Output Speed Sensor NC *4 Input Speed Sensor NT
DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
P0715 Input / Turbine Speed Sensor Circuit Malfunction

1. Diagnosis Condition 2. Malfunction Status 3. Malfunction Time 4. Other


    DTC Detection Condition 1:

  1. The battery voltage is 8 V or more, the engine switch is on (IG) and the starter is off.

  2. The input speed sensor NT input voltage is more than 1.9 V.

  3. 4.5 seconds

  4. 1-trip detection logic


    DTC Detection Condition 2:

  1. The battery voltage is 8 V or more, the engine switch is on (IG) and the starter is off.

  2. The input speed sensor NT input voltage is less than 0.1 V.

  3. 4.5 seconds

  4. 1-trip detection logic

  • Input speed sensor NT (Transmission revolution sensor)

  • Transmission wire

  • TCM

 Comes on DTC stored
P0717 Input Speed Sensor Circuit No Signal

1. Diagnosis Condition 2. Malfunction Status 3. Malfunction Time 4. Other


  1. The vehicle is being driven with the shift lever in D (not in 1st gear) and the output shaft speed is 1000 rpm or more.

  2. The speed indicated by the input speed sensor NT signal is less than 300 rpm.

  3. 5 seconds

  4. 1-trip detection logic

  • Input speed sensor NT (Transmission revolution sensor)

  • Transmission wire

  • TCM

 Comes on DTC stored

MONITOR DESCRIPTION

The NT terminal of the TCM detects a revolution signal from the input speed sensor NT (input RPM). The TCM calculates gear shifts comparing the input speed sensor NT signal to the output speed sensor NC signal.

While the vehicle is being driven in 2nd, 3rd, 4th or 5th gear with the shift lever in D, if the input shaft revolution (speed) is less than 300 rpm*1 and the output shaft revolution (speed) is more than 1000 rpm*2, the TCM interprets this as a malfunction, illuminates the MIL and stores a DTC.

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

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

WIRING DIAGRAM

A01IFRNE03
*a Transmission Wire
*b Transmission Revolution Sensor (Input Speed Sensor NT)
*c Automatic Transaxle Assembly

CAUTION / NOTICE / HINT

Note

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

Click here

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.

  • After performing repair, clear the DTCs and perform the following procedure to check that DTCs are not output.


    1. Perform the D Position Shift Test inspection in Road Test and drive the vehicle for 5 seconds or more at 50 km/h (31 mph) or more.

      Click here

    2. Check for DTCs again.

      Click here


  1. DATA LIST

    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 / ECT / Data List.

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


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

      Min.: 0 rpm

      Max.: 12750 rpm

      • Equal to engine speed: Lock-up on (after warming up the engine)

      • Nearly equal to engine speed: Lock-up off (idling with shift lever in N)

      		 Data is displayed in increments of 50 rpm

      Powertrain > ECT > 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 in the circuit.

PROCEDURE


  1. INSPECT TRANSMISSION REVOLUTION SENSOR (SPEED SENSOR INSTALLATION)


    1. Remove the transmission valve body assembly.

      Click here

    2. A01IHNU

      Make sure that the connector is properly connected, and check the transmission revolution sensor installation.

      Click here

      OK
      The installation bolts are tightened properly and there is no clearance between the transmission revolution sensor and transmission valve body assembly.
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE TRANSMISSION REVOLUTION SENSOR Click here

    OK

  2. INSPECT TRANSMISSION WIRE


    1. A01IKTZC01
      *a

      Component without harness connected

      (Transmission Wire)
      *b Transmission Revolution Sensor Side
      *c TCM Side

      Remove the TCM.

      Click here

    2. Disconnect the transmission revolution sensor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 (NTB) sensor side - 1 (NTB) TCM side Always Below 1 Ω
      2 (NTO) sensor side - 2 (NTO) TCM side Always Below 1 Ω
      1 (NTB) sensor side - Body ground and other terminals Always 10 kΩ or higher
      2 (NTO) sensor side - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE TRANSMISSION WIRE Click here

    OK

  3. REPLACE TRANSMISSION REVOLUTION SENSOR

    Click here

    Result
    Proceed to
    NEXT

    NEXT

  4. CHECK IF DTC OUTPUT RECURS (DTC P0715 AND/OR P0717)


    1. Connect the GTS to the DLC3.

    2. Start the engine and turn the GTS on.

    3. Clear the DTCs.

      Click here


      Powertrain > ECT > Clear DTCs

      Tech Tips

      Write down the currently output DTCs before clearing them.

    4. Perform the monitor drive pattern.

      Click here

    5. Enter the following menus: Powertrain / ECT / Trouble Codes.


      Powertrain > ECT > Trouble Codes

    6. Read the DTCs using the GTS.

      Result
      Result Proceed to
      Only DTC P0715 or P0717 is output A
      DTCs are not output B

    A

    REPLACE TCM Click here

    B

    END