This function is used to calibrate the tilt sensor.
Test conditions:
Ignition on.
Battery voltage above 12V.
Vehicle stationary.
The vehicle must stand on level ground.
When the function is in progress, no vibrations are permitted.
Vehicle unloaded without driver or passengers.
Procedure:
Start the function.
Follow the instructions in the program.
The function is done.
If the function fails, check the test conditions and repair any faults.