P0717

DTC P0717 (3.6L)

Test 1-6:

Test 7-14:

Circuit Description
The automatic transmission Input Speed Sensor (ISS) is a permanent magnet with a coil of wire wound around it. The ISS mounts in the case cover facing the reluctor wheel of the input shaft. As the reluctor wheel is driven by the turbine shaft, an AC signal is induced in the input speed sensor. Higher vehicle speeds induce a higher frequency and voltage at the sensor.

There is a fixed air gap between the sensor and the teeth on the sensor reluctor wheel. The ISS input is used by the TCM in order to control line pressure, TCC apply and release and transmission shift patterns. This sensor is also used to calculate the gear ratios and TCC slippage.

If the TCM detects a low input speed while the vehicle and engine speeds are high, then DTC P0717 sets. DTC P0717 is a type B DTC.

Conditions for Running the DTC
^ No TP sensor DTC P0121, P0122 or P0123.
^ No VSS DTC P0722 or P0723.
^ No ISS sensor DTC P0717.
^ DTC P0717 has passed this ignition cycle.
^ No 1-2 shift solenoid valve DTC P0751, P0752 or P0753.
^ The engine speed is greater than 500 RPM for 5 seconds and not in fuel shut off.
^ The ISS is greater than 1050 RPM for at least 2 seconds.
^ An increase in ISS is less than 500 RPM for at least 2 seconds.
^ The vehicle speed is 16 km/h (10 mph) or greater.
^ Throttle position is at least 5 percent.
^ The engine torque is 68 Nm (50 ft. lbs.) or more.

Conditions for Setting the DTC
The input shaft speed is less than 50 RPM for 4.5 seconds.

Action Taken When the DTC Sets
^ The TCM requests the ECM to illuminate the Malfunction Indicator Lamp (MIL) during the second consecutive trip in which the Conditions for Setting the DTC are met.
^ The TCM inhibits Torque management.
^ The TCM freezes transmission adaptive functions.
^ The TCM calculates input speed.
^ The TCM records the operating conditions when the Conditions for Setting the DTC are met. The TCM stores this information as Freeze Frame and Failure Records.
^ The TCM stores DTC P0717 in TCM history during the second consecutive trip in which the Conditions for Setting the DTC are met.

Conditions for Clearing the MIL/DTC
^ The ECM turns OFF the MIL during the third consecutive trip in which the TCM does not send an MIL illumination request.
^ A scan tool can clear the MIL/DTC.
^ The TCM clears the DTC from TCM history if the vehicle completes 40 warm-up cycles without an emission related diagnostic fault occurring.
^ The TCM cancels the DTC default actions when the ignition switch is OFF long enough in order to power down the TCM.

Diagnostic Aids
Ensure the wiring harness is not stretched too tightly or other components are pressing on the A/T inline 20way connector body. Also inspect for proper clearance to any other components and wiring.

Test Description
The numbers below refer to the step numbers on the diagnostic table.
3. A Yes answer indicates that the transmission side of the circuit is functioning properly.
4. Although the resistance is within specification in Step 3, there may be a short to ground or a short to power condition.
8. This step begins the transmission harness diagnosis.