P0717

DTC P0717 INPUT SPEED SENSOR CIRCUIT NO SIGNAL

CIRCUIT DESCRIPTION

DTC Detection Condition:

This sensor detects the rotation speed of the turbine which shows the input revolution of 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. Thus, providing smooth gear shift.
Reference (Using an oscilloscope):
Check the waveform between the terminals NT+ and NT-of the ECM connector.

MONITOR DESCRIPTION

Monitor Strategy:

Typical Enabling Conditions:

Typical Malfunction Thresholds:

Component Operating Range:

This DTC indicates that pulse is not output from the speed sensor NT (Turbine (input) speed sensor ) or is output only little. The NT terminal of the ECM detects the revolving signal from speed sensor (NT) (input RPM). The ECM outputs a gearshift 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 in the shift position of D, if the input shaft revolution is less than 300 rpm*1 although the output shaft revolution is more than 300 rpm or more*2, the ECM detects the trouble, illuminates the MIL and stores the DTC.
*1: Pulse is not output or is irregularly output.
*2: The vehicle speed is approx. 50 km/h (31 mph) or more.

Wiring Diagram:

Step 1:

Step 2-3:

INSPECTION PROCEDURE

HINT: According to the DATA LIST displayed by the hand-held tester, you can read the value of the switch, sensor, actuator and so on without parts removal. Reading the DATA LIST as the first step of troubleshooting is one method to shorten labor time.

a. Warm up the engine.
b. Turn the ignition switch off.
c. Connect the hand-held tester to the CAN VIM. Then connect the CAN VIM to the DLC3.
d. Turn the ignition switch to the ON position.
e. Push the "ON" button of the hand-held tester.
f. Select the item "DIAGNOSIS/ENHANCED OBD II/DATA LIST".
g. According to the display on tester, read the "DATA LIST".

HINT:
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.