Dtc P0717 Turbine Speed Sensor Circuit No Signal

Drivetrain. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25
A340F Automatic Transmission Transaxle. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25

DESCRIPTION

MONITOR DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

INSPECT SPEED SENSOR NC0 INSTALLATION

INSPECT SPEED SENSOR NC0

CHECK HARNESS AND CONNECTOR (SPEED SENSOR NC0 - TCM)

DTC P0717 Turbine Speed Sensor Circuit No Signal


DESCRIPTION

This sensor detects the rotation speed of the turbine which indicates the input speed of the transmission. By comparing the input turbine speed signal NC0 with the output speed sensor signal SP2, the TCM detects the shift timing of the gears and appropriately controls the engine torque and hydraulic pressure according to various conditions, and as a result, the gears shift smoothly.

DTC Code
DTC Detection Condition
Trouble Area
P0717
All conditions are met for 5 seconds or more (1 trip detection logic*1, 2 trip detection logic*2):
(a) Transmission input shaft speed is 300 rpm or less.
(b) Transmission output shaft speed is 500 rpm or more.
(c) Park/neutral position switch R input signal is off.
  1. Open or short in speed sensor NC0 circuit
  2. Speed sensor NC0
  3. TCM
  4. Automatic transmission (clutch, brake, gear, etc.)
  1. *1: w/ OBD
  2. *2: w/o OBD
Reference: Inspect using an oscilloscope.
Check the waveform of the TCM connector.
Standard:
Terminal No. (Symbol)
Tool Setting
Condition
Specified Condition
C24-3 (NC0+) - C24-2 (NC0-)
5 V/DIV., 0.5 msec./DIV.
Engine idling (shift lever in P or N)
Refer to illustration
Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.A340F Automatic Transmission Transaxle.Automatic Transmission System. Dtc P0717 Turbine Speed Sensor Circuit No Signal

MONITOR DESCRIPTION

This DTC indicates that a pulse is not output from the speed sensor NC0 (turbine (input) speed sensor) or is output only a little. The NC0 terminal of the TCM detects the pulse signal from the speed sensor NC0 (input turbine speed). The TCM outputs a gear shift signal by comparing the input speed sensor NC0 signal with the output speed sensor SP2 signal.
If the input shaft speed is less than 300 rpm*1 although the output shaft speed is 500 rpm or more*2, the TCM detects the trouble, illuminates the MIL and stores the DTC.
HINT:
  1. *1: A pulse is not output or is irregularly output.
  2. *2: The vehicle speed is approximately 50 km/h (30 mph) or more.

WIRING DIAGRAM


Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.A340F Automatic Transmission Transaxle.Automatic Transmission System. Dtc P0717 Turbine Speed Sensor Circuit No Signal


INSPECTION PROCEDURE


DATA LIST
HINT:
Using the intelligent tester 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.
NOTICE:
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 ON.

  5. Turn the intelligent tester on.

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

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

    ECT
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    SPD (NC0)
    		Input shaft speed/
    Min.: 0 rpm
    Max.: 12750 rpm
    1. Lock-up ON (warmed up engine, other than 4th):
      Input turbine speed (NC0) is equal to the engine speed
    2. Lock-up ON (warmed up engine, 4th):
      Input turbine speed (NC0) is 0 rpm
    3. Lock-up OFF (idling with shift lever on N):
      Input turbine speed (NC0) is nearly equal to engine speed
    		Data is displayed in increments of 50 rpm.
    HINT:
    1. SPD (NC0) is always 0 while driving:
      Open or short in the sensor or circuit.
    2. SPD (NC0) is always more than 0 and less than 300 rpm while driving the vehicle at 50 km/h (30 mph) or more:
      Sensor trouble, improper installation, or intermittent connection trouble in the circuit.
1.INSPECT SPEED SENSOR NC0 INSTALLATION


    Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.A340F Automatic Transmission Transaxle.Automatic Transmission System. Dtc P0717 Turbine Speed Sensor Circuit No Signal

  1. Check the speed sensor NC0 installation.

    OK:
    The installation bolt is tightened properly and there is no clearance between the sensor and transmission case.
    Text in Illustration
    *a
    		CORRECT
    *b
    		INCORRECT


NG
SECURELY INSTALL OR REPLACE SPEED SENSOR NC0 (HILUX_TGN26 RM0000010N501QX_01_0001.html)
OK


2.INSPECT SPEED SENSOR NC0


    Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.A340F Automatic Transmission Transaxle.Automatic Transmission System. Dtc P0717 Turbine Speed Sensor Circuit No Signal

  1. Disconnect the C11 speed sensor connector.

  1. 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
    Text in Illustration
    *a
    		Component without harness connected
    (Speed Sensor NC0)


NG
REPLACE SPEED SENSOR NC0 (HILUX_TGN26 RM0000010N501QX_01_0001.html)
OK


3.CHECK HARNESS AND CONNECTOR (SPEED SENSOR NC0 - TCM)


    Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.A340F Automatic Transmission Transaxle.Automatic Transmission System. Dtc P0717 Turbine Speed Sensor Circuit No Signal

  1. Disconnect the C24 TCM connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    C24-3 (NC0+) - C24-2 (NC0-)
    		20°C (68°F)
    		560 to 680 Ω
    C24-3 (NC0+) - Body ground
    		Always
    		10 kΩ or higher
    C24-2 (NC0-) - Body ground
    		Always
    		10 kΩ or higher
    Text in Illustration
    *a
    		Rear view of wire harness connector
    (to TCM)


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE TCM (HILUX_TGN26 RM000004ROZ00CX.html)