DTC    P0717    Turbine Speed Sensor Circuit No Signal

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DESCRIPTION

This sensor detects the rotation speed of the turbine which shows the input revolution of the transmission. By comparing the input turbine speed signal NT with the counter gear speed sensor signal SP2, the ECM 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 below are detected for 5 seconds or more (1-trip detection logic)
(a) Gear change is not performed
(b) Gear position: 4th, 5th or 6th
(c) T/M input shaft rpm: 300 rpm or less
(d) T/M output shaft rpm: 1000 rpm or more
(e) Park/neutral position switch:
  1. NSW input signal is OFF
  2. R input signal is OFF
(f) Shift solenoid valves and park/neutral position switch are operating normally
  1. Open or short in speed sensor NT circuit
  2. Speed sensor NT
  3. ECM
  4. Automatic transmission (clutch, brake or gear, etc.)
Reference: Inspect using an oscilloscope.
Check the waveform of the ECM connector.

Standard:
Terminal No. (Symbol)
Tool Setting
Condition
Specified Condition
D74-124 (NT+) - D74-123 (NT-)
1 V/DIV., 2 msec./ DIV.
Engine is idling (P or N position)
Refer to the illustration
C162170E04

MONITOR DESCRIPTION

This DTC indicates that a pulse is not output from the speed sensor NT (turbine (input) speed sensor) or is output only a little. The NT terminal of the ECM detects the pulse signal from the speed sensor NT (input RPM). The ECM outputs a gear shift signal comparing the input speed sensor NT with the output speed sensor SP2.
While the vehicle is operating in the 4th, 5th or 6th gear position with the shift lever in D, if the input shaft revolution is less than 300 rpm*1 although the output shaft revolution is more than 1000 rpm or more*2, the ECM detects the trouble, illuminates the MIL and stores the DTC.

HINT:
  1. *1: Pulse is not output or is irregularly output.
  2. *2: The vehicle speed is approximately 50 km/h (30 mph) or more.

MONITOR STRATEGY


Related DTCs
P0717: Speed sensor (NT)/Verify pulse input
Required sensors/Components (Main)
Speed sensor (NT)
Required sensors/Components (Related)
Speed sensor (SP2)
Frequency of operation
Continuous
Duration
5 seconds
MIL operation
Immediately
Sequence of operation
None

TYPICAL ENABLING CONDITIONS


The monitor will run whenever the following DTCs are not present
P0705 (Park/neutral position switch circuit)
P0751, P0973, P0974 (Shift solenoid valve S1)
P0756, P0976, P0977 (Shift solenoid valve S2)
P0761, P0979, P0980 (Shift solenoid valve S3)
P0766, P0982, P0983 (Shift solenoid valve S4)
P0748 (Shift solenoid valve SL1 circuit)
P0776, P0778 (Shift solenoid valve SL2)
Shift change
After shift change is completed and before starting next shift change operation
ECM selected gear
4th, 5th or 6th
Output shaft rpm
1000 rpm or more
NSW switch
OFF
R switch
OFF
Engine
Running
Battery voltage
8 V or more
Ignition switch
ON
Starter
OFF

TYPICAL MALFUNCTION THRESHOLDS


Speed sensor signal rpm
Less than 300 rpm

COMPONENT OPERATING RANGE


Speed sensor signal rpm
300 rpm or more

WIRING DIAGRAM


C155187E04


INSPECTION PROCEDURE

NOTICE:
Perform the universal trip to clear permanent DTCs (Click here).

DATA LIST

HINT:
Using the Techstream 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 Techstream to the DLC3.

  4. Turn the ignition switch to ON.

  5. Turn the Techstream on.

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

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

    Engine and ECT: 
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    SPD (NT)
    		Input shaft speed/
    Min.: 0 rpm
    Max.: 12750 rpm
    		Lock-up is:
    1. ON (after warming up engine): Input turbine speed (NT) is equal to engine speed
    2. 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

    HINT:
    1. SPD (NT) is always 0 while driving:
      Open or short in the sensor or circuit.
    2. SPD (NT) 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 NT INSTALLATION


    C159067E01

  1. Check the speed sensor NT installation.

    OK:
    The installation bolt is tightened properly and there is no clearance between the sensor and transmission case.


NG
SECURELY INSTALL OR REPLACE SPEED SENSOR NT
OK


2.INSPECT SPEED SENSOR NT


    C159420E01

  1. Disconnect the D65 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


NG
REPLACE SPEED SENSOR NT (Click here)
OK


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


    C159422E05

  1. Disconnect the D74 ECM connector.

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

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    D74-124 (NT+) - D74-123 (NT-)
    		20°C (68°F)
    		560 to 680 Ω
    D74-124 (NT+) - Body ground
    		Always
    		10 kΩ or higher
    D74-123 (NT-) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE ECM (Click here)