Windows: Testing and Inspection

GF72.29-P-4003Q Synchronization Of Power Windows, Function

Normalization means teaching the upper window stop (zero point) into the
^ left door control unit (N69/1),
^ right door control unit (N69/2) and
^ rear control unit (N22/6) (on model 209.3) or
^ soft top mechanism control unit (N52) (on model 209.4).

Synchronizing
Completely close window in question with left front power window switch (S20/1s1), right front power window switch (S20/1s2), left rear power window switch (S20/1s3), right rear power window switch (S20/1s4), passenger-side power window switch (S21/2), left rear power window switch (S21/3) or right rear power window switch (S21/4).

Continue to actuate left front power window switch (S20/1s1), right front power window switch (S20/1s2), left rear power window switch (S20/1s3), right rear power window switch (S20/1s4), passenger-side power window switch (S21/2), left rear power window switch (S21/3) or right rear power window switch (S21/4). The left door control unit (N69/1), the right door control unit (N69/2) or the rear control unit (N22/6) (on model 209.3) or the soft top mechanism control unit (N52) (on model 209.4) sets the location counter for the Hall signals to zero if it recognizes a blockage of the left front power window motor (M10/3), the right front power window motor (M10/4), the left rear power window motor (M10/5) or the right rear power window motor (M10/6) for min. 0.3 s.

Normalization is prerequisite for:
^ Automatic raising (only on windows in doors, except vehicles as of model year 09 /YoM 08 with code (494) USA version or code (460) Canada version)
^ Short stroke
^ Switching off 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) before limit stop.
^ Obstruction sensor

Renormalization
Renormalization is accomplished automatically when there is an error in the position recognition, for example, if the position counter indicates a negative status.

Denormalization
Denormalization occurs when:
^ the position counter for the window obtains a value greater than the maximum window travel during automatic lowering,
^ during automatic raising the window has reached a location counter status going beyond the negative zero tolerance or the stored zero point (except vehicles as of model year 09/�J08 with code (494) USA version or code (460) Canada version).
^ a supply voltage of less than 6.5 V is connected to circuit 30 for min. 60 s.
^ one of the two Hall sensor signals from 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) is erroneous for 12 armature rotations.

Normalization does not take place when the thermo-switch is actuated in 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).