Ab60F Automatic Transmission Transaxle. Dtc P0717 Turbine Speed Sensor Circuit No Signal

Drivetrain. Land Cruiser. Urj200, 202 Grj200 Vdj200

Ab60F Automatic Transmission Transaxle. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

MONITOR DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

INSPECT SPEED SENSOR NT INSTALLATION

INSPECT SPEED SENSOR NT

CHECK HARNESS AND CONNECTOR (SPEED SENSOR NT - ECM)

DTC P0717 Turbine Speed Sensor Circuit No Signal

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. As a result, the gears shift smoothly.

DTC Code	DTC Detection Condition	Trouble Area
P0717	All the conditions below are detected for 5 sec. or more (1 trip detection logic). (a) Gear change is not performed. (b) The gear position is 4th, 5th or 6th. (c) The T/M input shaft rpm is 300 rpm or less. (d) The T/M output shaft rpm is 1000 rpm or more. (e) The park/neutral position switch: The NSW input signal is OFF. The R input signal is OFF. (f) The shift solenoid valves and park/neutral position switch are operating normally.	Open or short in speed sensor NT circuit Speed sensor NT ECM Automatic transmission (clutch, brake or gear, etc.)

Reference: Inspect using an oscilloscope.
Check the waveform of the ECM connector.

Standard:

for LHD
Terminal No. (Symbol)	Tool Setting	Condition	Specified Condition
C45-76 (NT+) - C45-75 (NT-)	1 V/DIV., 2 msec./DIV.	Engine idling (shift lever in P or N)	Refer to illustration

for RHD
Terminal No. (Symbol)	Tool Setting	Condition	Specified Condition
C46-76 (NT+) - C46-75 (NT-)	1 V/DIV., 2 msec./DIV.	Engine idling (shift lever in P or N)	Refer to illustration

Land Cruiser. Urj200, 202 Grj200 Vdj200.Ab60F Automatic Transmission Transaxle.Automatic Transmission System (For 1Ur-Fe).
Dtc
P0717 Turbine Speed Sensor Circuit No Signal

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 1000 rpm or more*2, the ECM detects the trouble, illuminates the MIL and stores the DTC.

HINT:

*1: Pulse is not output or is irregularly output.
*2: The vehicle speed is approximately 50 km/h (31 mph) or more.

WIRING DIAGRAM

INSPECTION PROCEDURE

DATA LIST

HINT:

Using the GTS 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.

Warm up the engine.
Turn the engine switch off.
Connect the GTS to the DLC3.
Turn the engine switch on (IG).
Turn the GTS on.
Enter the following menus: Powertrain / Engine and ECT / Data List.

According to the display on the GTS, 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: ON (after warming up engine): Input turbine speed (NT) equal to engine speed OFF (idling with shift lever in N): Input turbine speed (NT) nearly equal to engine speed	The data is displayed in increments of 50 rpm.

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.

1.INSPECT SPEED SENSOR NT INSTALLATION

Check the speed sensor NT 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

Text in Illustration
*a	CORRECT
*b	INCORRECT

SECURELY INSTALL OR REPLACE SPEED SENSOR NT (Click here)

OK

2.INSPECT SPEED SENSOR NT

Disconnect the speed sensor connector.

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 NT)

Text in Illustration
*a	Component without harness connected (Speed Sensor NT)

REPLACE SPEED SENSOR NT (Click here)

OK

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

Disconnect the ECM connector.

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

Standard Resistance:

for LHD
Tester Connection	Condition	Specified Condition
C45-76 (NT+) - C45-75 (NT-)	20°C (68°F)	560 to 680 Ω
C45-76 (NT+) - Body ground	Always	10 kΩ or higher
C45-75 (NT-) - Body ground	Always	10 kΩ or higher

for RHD
Tester Connection	Condition	Specified Condition
C46-76 (NT+) - C46-75 (NT-)	20°C (68°F)	560 to 680 Ω
C46-76 (NT+) - Body ground	Always	10 kΩ or higher
C46-75 (NT-) - Body ground	Always	10 kΩ or higher

Text in Illustration
*1	for LHD
*2	for RHD
*a	Front view of wire harness connector (to ECM)

REPAIR OR REPLACE HARNESS OR CONNECTOR

REPLACE ECM (Click here)