ELECTRONIC CONTROLLED AUTOMATIC TRANSMISSION SYSTEM, Diagnostic DTC:P0717/67

DTC Code DTC Name
P0717/67 Input Speed Sensor Circuit No Signal

DESCRIPTION

The O/D direct clutch speed sensor (NC0) detects the rotation speed of the O/D input shaft from the rotation of the O/D direct clutch drum. Its construction is the same as that of the speed sensor (SP2).

By comparing the O/D direct clutch speed signal and speed sensor (SP2) signal, the TCM detects the shift timing of the gears and appropriately controls the engine torque and hydraulic pressure in response to various conditions, thus achieving smooth gear shift.

A003EVOE02
DTC No. DTC Detection Condition Trouble Area
P0717/67

  • All conditions below are detected for 5 sec. or more.

    (1KD-FTV: 1-trip detection logic)

    (2KD-FTV: 2-trip detection logic)


    1. Gear change is not performed

    2. Gear position: 1st, 2nd or 3rd

    3. T/M input shaft rpm: 300 rpm or less

    4. T/M output shaft rpm: 500 rpm or more

    5. Park/neutral position switch:


      • NSW input signal is OFF

      • R input signal is OFF

      • L input signal is OFF

    6. Shift solenoid valves and park/neutral position switch are in normal operation.

  • Open or short in speed sensor (NC0) circuit

  • Speed sensor (NC0)

  • TCM

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

Reference (Using an oscilloscope):

Check the waveform between terminals NC0+ and NC0- of the TCM connector.

A003B8ME03
Standard
Refer to the illustration.

Tech Tips

Gauge setting.

Terminal NC0+ - NC0-
Tool setting 5 V/DIV, 0.5 ms/DIV
Vehicle condition Engine idle speed (P or N position)

MONITOR DESCRIPTION

This DTC indicates that pulse is not output from the speed sensor NC0 (O/D (input) speed sensor) or is output only little. The NC0 terminal of the TCM detects the revolving signal from speed sensor (NC0) (input RPM). The TCM outputs a gearshift signal comparing the input speed sensor (NC0) with the output speed sensor (SP2).

When the output shaft speed is higher than the expected value and the input shaft speed is 300 rpm or less while running with the shift lever on D, the TCM will conclude that there is a malfunction of the input speed sensor (NC0). The TCM will illuminate the MIL and a DTC is set.

WIRING DIAGRAM

A003H95E03

INSPECTION PROCEDURE


  1. DATA LIST

    Tech Tips

    Using the intelligent tester 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 shorten labor 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 off.

    3. Connect the intelligent tester to the DLC3.

    4. Turn the ignition switch to the ON position.

    5. Turn on the tester.

    6. Select the item "Power train / ECT / Data List".

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

      Item

      Measurement Item /

      Range

      		 Normal Condition
      SPD (NC0)

      Input Turbine Speed/

      display: 50 r/min

      Tech Tips


      • Lock-up ON (warmed up engine, other than O/D):

        Input Turbine Speed (NC0) is equal to engine speed


      • Lock-up ON (warmed up engine, O/D):

        Input Turbine Speed (NC0) is 0 rpm


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

        Input Turbine Speed (NC0) is nearly equal to engine speed

      Tech Tips


      • SPD (NC0) is always 0 while driving:

        Open or short in the sensor or circuit.

      • SPD (NC0) 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. INSPECT SPEED SENSOR INSTALLATION


    1. A003D2AE34

      Check the speed sensor (NC0) installation.

      OK
      The installation bolt is tightened properly and there is no clearance between the sensor and transmission case.
      Torque:
      5.4 N*m  { 55 kgf*cm, 48 in.*lbf }

    NG

    SECURELY INSTALL OR REPLACE SPEED SENSOR (NC0)

    OK

  2. INSPECT SPEED SENSOR (NC0)


    1. A003HKTE08

      Disconnect the speed sensor connector from the transmission.

    2. Measure the resistance.

      Standard resistance
      Tester Connection

      Specified Condition

      20°C (68°F)
      1 - 2 560 to 680 Ω

    NG

    REPLACE SPEED SENSOR (NC0)

    OK

  3. CHECK HARNESS AND CONNECTOR (SPEED SENSOR - TCM)


    1. A003E3EE31

      Connect the speed sensor connector.

    2. Disconnect the TCM connector.

    3. Measure the resistance.

      Standard resistance
      Tester Connection

      Specified Condition

      20°C (68°F)
      O1-3 (NC0+) - O1-2 (NC0-) 560 to 680 Ω

    4. Measure the resistance.

      Standard resistance (Check for short)
      Tester Connection Specified Condition
      O1-3 (NC0+) - Body ground 10 kΩ or higher
      O1-2 (NC0-) - Body ground

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE TCM