P0717

Diagnostic Chart:

Schematic:

The input speed sensor (ISS) is a 2-wire hall-effect speed sensor. The ISS uses 12 machined notches on the Forward Clutch (C1) drum to produce different squarewave voltage signals. The ISS changes the voltage signal on circuit 1231 to different frequencies depending on velocity of the input shaft. The ISS signal is sent to the transaxle control module (TCM), which is used to determine input shaft RPM. DTC P0717 sets when the TCM does not detect an ISS signal for a certain length of time.

DTC PARAMETERS
DTC P0717 will set if no ISS signal is detected when:
^ A forward gear is selected
^ Trans. Fluid Temp. is greater than 20°C (68°F)
^ Trans Protection Mode is Off
^ Ignition voltage is between 9 and 16 volts
^ Engine speed is more than 400 rpm
^ TCM detects at least 6 pulses from the output shaft speed sensor
^ Condition exists for longer than 10 seconds

DTC P0717 diagnostic runs continuously when the above conditions have been met.

The TCM will command Transaxle Protection Mode ON if this DTC is active.

DTC P0717 is a type A DTC.

DIAGNOSTIC AIDS
To locate an intermittent problem, use a Scan tool to monitor TRANSMISSION ISS with the engine running. Wiggling wires while watching for a change in TRANSMISSION ISS may locate the area where an open or high resistance may lie.

Check the ISS mounting bolt for tightness.

ISS resistance: open