P0717

No input speed signal





Fault symptoms
CHECK GEARBOX warning lamp is on.

TCM in Limp-Home mode.

Conditions
No signal from the input speed sensor when:

- The speed of the car in first gear is higher than 7 km/h.

- The speed of the car in second gear is higher than m13 km/h.

- The speed of the car in third gear is higher than 18 km/h.

- The speed of the car in fourth gear is higher than 26 km/h.

- Gear selector position sensor in position D, 3, 2 or 1.

- Engine speed above 400 rpm

Diagnostic help
A reading of the input speed can be obtained with the diagnostics instrument.

- Read "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.