Windows: Testing and Inspection

GF72.29-P-4002T Power Window Denormalization, Function

A denormalization is performed if
^ the supply voltage (UB) < 6.5 V for t > 60 s
^ the window reaches a position count status greater than the maximum window travel during automatic lowering
^ the window reaches a position count status beyond the negative zero point tolerance or the stored zero point during automatic raising
^ one of 2 Hall sensor signals for 12 armature rotations is erroneous

Following denormalization, automatic raising is no longer possible.
Actuation of the temperature in the power window motor should not lead to denormalization.