P0717

U340E AUTOMATIC TRANSAXLE: AUTOMATIC TRANSAXLE SYSTEM: P0717: Turbine Speed Sensor Circuit No Signal

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 speed sensor signal (SPD), the ECM detects the shift timing of the gears and appropriately controls the engine torque and hydraulic pressure in response to various conditions, thus performing smooth gear shifting.






MONITOR DESCRIPTION

The ECM detects the revolving signal from the transmission revolution sensor (input RPM). The ECM outputs a gearshift signal by comparing the transmission revolution sensor signal with the speed sensor signal (SPD). While the vehicle is operating in the 3rd or 4th 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 1000 rpm*2, the ECM detects the malfunction, illuminates the MIL and stores the DTC.
*1: Pulse is not output or is irregularly output.
*2: The vehicle speed is 31 mph (50 km/h) or more.

MONITOR STRATEGY





TYPICAL ENABLING CONDITIONS





TYPICAL MALFUNCTION THRESHOLDS





COMPONENT OPERATING RANGE





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. INSPECT TRANSMISSION REVOLUTION SENSOR INSTALLATION




(a) Check the transmission revolution sensor installation.
OK:
The installation bolt is tightened properly and there is no clearance between the sensor and transmission case.
NG -- SECURELY INSTALL OR REPLACE TRANSMISSION REVOLUTION SENSOR
OK -- Continue to next step.
2. INSPECT TRANSMISSION REVOLUTION SENSOR




(a) Disconnect the transmission revolution sensor connector from the transaxle.
(b) Measure the resistance.
Standard resistance:






NG -- REPLACE TRANSMISSION REVOLUTION SENSOR
OK -- Continue to next step.
3. CHECK HARNESS AND CONNECTOR (TRANSMISSION REVOLUTION SENSOR - ECM)




(a) Connect the transmission revolution sensor connector.
(b) Disconnect the ECM connector.
(c) Measure the resistance.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE ECM