Dtc P0717 Turbine Speed Sensor Circuit No Signal. Corolla ZZE150
DESCRIPTION
MONITOR DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
INSPECT SPEED SENSOR INSTALLATION
INSPECT SPEED SENSOR (NT)
CHECK HARNESS AND CONNECTOR (SPEED SENSOR - ECM)
DTC 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 shift.DTC No.
| DTC Detection Condition
| Trouble Area
|
P0717
| ECM detects conditions (a), (b) and (c) continuously for 5 sec. or more: (1-trip detection logic)
(a) Vehicle speed: 50 km/h (31 mph) or more
(b) Park/neutral position switch (NSW (STAR), R and L) is OFF
(c) Speed 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
|
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 running with the shift in the D position, the ECM will conclude that there is malfunction of the input turbine speed sensor (NT). The ECM will illuminate the MIL.
WIRING DIAGRAM
INSPECTION PROCEDURE
| 1.INSPECT SPEED SENSOR INSTALLATION |
Check the speed sensor installation.
- OK:
- The installation bolt is tightened properly and there is no clearance between the sensor and transaxle case.
| 2.INSPECT SPEED SENSOR (NT) |
Disconnect the speed sensor connector from the transaxle.
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
|
| 3.CHECK HARNESS AND CONNECTOR (SPEED SENSOR - ECM) |
Connect the speed sensor connector.
Disconnect the ECM connector.
Measure the resistance according to the value(s) in the table below.
- Standard resistance:
Tester Connection
| Condition
| Specified Condition
|
B31-125 (NT+) - B31-124 (NT-)
| 20°C (68°F)
| 560 to 680 Ω
|
Measure the resistance according to the value(s) in the table below.
- Standard resistance (Check for short):
Tester Connection
| Condition
| Specified Condition
|
B31-125 (NT+) - Body ground
| Always
| 10 kΩ or higher
|
B31-124 (NT-) - Body ground
| Always
| ↑
|
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
