P0717

P0717
Input RPM. No Signal.





Fault symptoms

CHECK GEARBOX warning lamp is on.

TCM in Limp-Home mode.

Conditions
Signal from output shaft speed sensor present.

Fault criteria
No signal from input shaft speed sensor.

System reaction to a fault
The control module uses the signal from the output shaft to calculate the input shaft speed.

Diagnostic help
A reading of the input speed can be obtained with the diagnostics instrument.
^ Select "Data Display / Output Control (New)" and "Gearbox Input RPM".

With the selector lever in position P or N. the diagnostics instrument should show the same rpm as indicated on the tachometer.

Check the wiring
Jiggle the wiring harness at several points and in different directions to reveal intermittent breaks and short circuits in the various leads. Observe the multimeter, test lamp or diagnostic instrument while carrying out this check.