TCM - (Transmission Control Module)

P0705

Selector Position Sensor. Input Wrong.







Fault symptoms
CHECK GEARBOX warning lamp on.
TCM in limp-home mode.

Conditions
Impermissible combination of the gear selector position sensor's voltage inputs to the TCM.

Diagnostic help
The voltage inputs of the gear selector position sensor can be read using the diagnostic tool via "Data Display / Output Control (New)" and "Gear Position Switch PA"

The diagnostics instrument shows the status of all voltage inputs, ON (B+) and OFF (ground).

If the gear selector position sensor is found to be faulty, it could be caused by a short circuit in the wiring harness. Before replacing the sensor, check the wiring harness for shorting to ground.

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.