Windows: Testing and Inspection

GF72.29-P-4003GZ Normalization of power windows, function
- 164.1/8 up to Model Year 8

Normalization
Normalization is learning in the left front door control unit (N69/1), right front door control unit (N69/2) and front SAM control unit (N10) to the upper mechanical window stop (zero point).

For this purpose, it is necessary to completely close and then continue to actuate or hold down the corresponding window via the driver power window and outside mirror adjustment switch group (S20/1) or the corresponding switch on the other window.The corresponding door control unit or the front SAM control unit sets the position counter for the Hall signals to zero if it recognizes a lock-up of the left front power window motor (M10/3), right front power window motor (M10/4), left rear power window motor (M10/5) or right rear power window motor (M10/6) for approx. 0.5 s.

Denormalization
Denormalization occurs when:
- the position counter status exceeds the maximum window travel.
- an incorrect rotation direction of
- the Hall sensors is recognized the Hall sensor signal is not present
- Circuit 30 is "OFF"

A prerequisite for this function is a normalization of the power window:
- Automatic closing with excess force limitation