U340E AUTOMATIC TRANSMISSION / TRANSAXLE  AUTOMATIC TRANSAXLE SYSTEM  P0717  Turbine Speed Sensor Circuit No Signal  


DESCRIPTION

This sensor detects the rotation speed of the input turbine. By comparing the input turbine speed signal (NT) with the output shaft speed, 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 shifts.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
P0717 Turbine Speed Sensor Circuit No Signal ECM detects conditions (a), (b) and (c) continuously for 5 seconds or more: (1-trip detection logic)
(a) Vehicle speed: 50 km/h (31 mph) or more
(b) Park/neutral position switch (NSW, R and L) is OFF
(c) Transmission revolution sensor (NT): less than 300 rpm
·

Open or short in transmission revolution sensor NT (speed sensor NT) circuit

·

Transmission revolution sensor NT (speed sensor NT)

·

ECM

·

Automatic transaxle assembly (clutch, brake or gear, etc.)


Comes on DTC stored

MONITOR DESCRIPTION

The input speed sensor detects the transmission input shaft speed. The ECM determines the gear shift timing based on a comparison of the input speed sensor (input shaft speed) with the output speed sensor (output shaft speed).

When the output shaft speed is higher than the expected value and the input shaft speed is 300 rpm or less while the vehicle is being driven with the shift lever in D, the ECM will conclude that there is malfunction of the transmission revolution sensor (NT) (input turbine speed sensor). The ECM will illuminate the MIL and store this DTC.

WIRING DIAGRAM

C251556E17
5.76,2.844 6.094,3.042 0.333,0.198 10 false B56 5.76,3 6.208,3.26 0.448,0.26 10 false ECM 0.948,2.375 1.313,2.573 0.365,0.198 10 false B48 0.948,2.542 2.448,3.323 1.5,0.781 10 false Transmission Revolution Sensor (NT) 5.615,1.042 5.969,1.24 0.354,0.198 10 false NT+ 5.615,2.167 5.969,2.365 0.354,0.198 10 false NT- 5.25,1.156 5.573,1.354 0.323,0.198 10 false 124 5.26,2.281 5.594,2.479 0.333,0.198 10 false 123 1.292,1.219 1.5,1.417 0.208,0.198 10 false 2 1.313,2.021 1.521,2.219 0.208,0.198 10 false 1

CAUTION / NOTICE / HINT

NOTICE:

Perform initialization when parts related to the automatic transaxle are replaced.

Click hereDrivetrain>U340E AUTOMATIC TRANSMISSION / TRANSAXLE>AUTOMATIC TRANSAXLE SYSTEM>PRECAUTION


PROCEDURE

1.INSPECT TRANSMISSION REVOLUTION SENSOR (NT) INSTALLATION
a.
C211922C19
0.844,0.229 1.156,0.427 0.313,0.198 10 false *a 2.313,0.229 2.625,0.427 0.313,0.198 10 false *b
*a OK
*b NG


Check the transmission revolution sensor (NT) installation.

OK:

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



Result:
Proceed to
OK
NG



OK

2.INSPECT TRANSMISSION REVOLUTION SENSOR (NT)

NG

SECURELY INSTALL TRANSMISSION REVOLUTION SENSOR (NT) OR REPLACE TRANSMISSION REVOLUTION SENSOR (NT)

Click hereDrivetrain>U340E AUTOMATIC TRANSMISSION / TRANSAXLE>SPEED SENSOR>INSTALLATION


2.INSPECT TRANSMISSION REVOLUTION SENSOR (NT)
a.
C206284C60
1.354,1.719 1.594,1.146 true 2.115,1.719 1.854,1.156 true 0.115,0.083 0.427,0.281 0.313,0.198 10 false *a 2.156,1.792 2.313,1.99 0.156,0.198 10 false 1 1.271,1.792 1.427,1.99 0.156,0.198 10 false 2
*a Component without harness connected
(Transmission Revolution Sensor (NT))


Disconnect the transmission revolution sensor (NT) connector from the transaxle.


b.

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



Result:
Proceed to
OK
NG



OK

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

NG

REPLACE TRANSMISSION REVOLUTION SENSOR (NT)

Click hereDrivetrain>U340E AUTOMATIC TRANSMISSION / TRANSAXLE>SPEED SENSOR>COMPONENTS


3.CHECK HARNESS AND CONNECTOR (TRANSMISSION REVOLUTION SENSOR (NT) - ECM)
a.

Connect the transmission revolution sensor (NT) connector.


b.
C228647C14
1.458,0.854 1.844,1.104 0.385,0.25 1.354,2.75 1.646,2.135 false 2.021,2.74 1.74,2.135 false 0.177,0.167 0.49,0.323 0.313,0.156 10 false *a 1.521,0.875 1.844,1.094 0.323,0.219 10 false B56 1.948,2.792 2.427,2.99 0.479,0.198 10 false NT+ 1.208,2.792 1.688,2.99 0.479,0.198 10 false NT-
*a Front view of wire harness connector
(to ECM)


Disconnect the ECM connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
B56-124 (NT+) - B56-123 (NT-) 20°C (68°F) 560 to 680 Ω



d.

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

Standard Resistance (Check for short):
Tester Connection Condition Specified Condition
B56-124 (NT+) - Body ground Always 10 kΩ or higher
B56-123 (NT-) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

REPLACE ECM

Click hereEngine / Hybrid System>1ZR-FE ENGINE CONTROL>ECM>COMPONENTS


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR