MVA 4 Speed - Automatic Transmission

DTC P0717

Circuit Description

This sensor detects the rotation speed of the input turbine. By comparing the input turbine speed signal (NT) with the counter gear speed sensor signal, the engine control module (ECM) detects the shift timing of the gears and appropriately controls the engine torque and hydraulic pressure according to various conditions. This provides smooth gear shift.

The ECM terminal 35 detects a revolution signal from the speed sensor (NC) (input RPM). The ECM calculates a gearshift comparing the speed sensor (NT) with the speed sensor (NC). While the vehicle is operating in 2nd, 3rd or 4th gear in the shift position of D, if the input shaft revolution is less than 300 RPM (pulse is not output or is irregularly output) although the output shaft revolution is more than 1,000 RPM (vehicle speed is 50 km/h (31 mph) or more, the ECM detects the trouble, illuminates the MIL and stores the DTC.

DTC Descriptor

This diagnostic procedure supports the following DTC:

DTC P0717 Turbine Speed Sensor Circuit No Signal

Conditions for Running the DTC

The engine is running.

Conditions for Setting the DTC

The ECM will set the DTC if the following conditions are present:

* Vehicle speed is 50 km/h (31 mph) or more
* Park/neutral position switch (NSW, R and L) is OFF
* Speed sensor signal is less than 300 RPM

Action Taken When the DTC Sets

* DTC P0717 is a type C DTC.
* The malfunction indicator lamp (MIL) illuminates the first time the diagnostic runs with the fault active.

Conditions for Clearing the MIL/DTC

The DTC will clear when conditions for setting the DTC have been repaired.