This function is used to check that the gear selector's solenoid valves are intact and that the air cylinder's piston and position sensors move.
When a valve is activated a sound should be heard from the transmission and status should become "Active". The cylinder stroke length values are displayed at the end of the test. The current value must be between the minimum and maximum values.
Possible air malfunctions:
Malfunction of air supply to cylinder.
Dirt/oil in air channels.
Binding piston in cylinder.
Binding solenoid valve.
Leak in air connections.
Mechanical faults:
Worn brass pins, shift fork, or clutch sleeve.
Test conditions:
Parking brake applied.
Air pressure in transmission between 550-1,000 kPa.
Engine off.
Battery voltage above 20 V.
Oil temperature in transmission above 15°C.
Procedure:
Select the function, press "OK".
A dialogue box shows test conditions.
Activate/Deactivate the cylinder's solenoid valve, a sound should be heard from the transmission, press, "OK".
Values from the cylinder's stroke are shown.
The function is done.
If the function fails, check the test conditions and repair any faults.