GF72.29-P-4003A Power window synchronization, function 12.12.96

MODEL  202 as of 1.6.97


Definition
Synchronization means the counter status for position recognition in the door control module (N69/1) or (N69/2), (models 202/210 also N69/3 or N69/4), is set to the actual position of the side window. Synchronization is necessary when the door control module has been separated from the power supply
(e.g. by disconnecting the battery, removing or installing
the door control module), or following a desynchronization.
When a window is not synchronized the door control module does not know in which position the window is and in which direction it is necessary to move the power window motor in order to close the window. For this reason synchronization is
a prerequisite for proper operation of the one-touch window up/down control for the power window.

Synchronising
Close window in question with power window switch or convenience feature until power window motor locks up, then continue to actuate switch. The door control module continues to
  actuate the motor and sets the counter for position recognition
to zero when motor lock-up has been recognized for at least
0.3 sec. The window is then synchronized. This means that
the door control module can now switch off the power window motor before reaching the lock-up position when opening and closing the window.
The window remains synchronized as long as it is not desynchronized.

Model 208: For synchronization it is necessary for the door
in question to be closed.
Resynchronizing
Resynchronization is accomplished when the power window switch is held down in the closed direction for longer than 0.3 seconds even though the zero position has already been reached.

  Power window position recognition feature   GF72.29-P-4000A
  Power windows in front doors   GF72.29-P-4101A
  Rear door control module   GF72.29-P-4102A
  Front driver-side door control module   GF72.29-P-4105A
  Front passenger-side door control module   GF72.29-P-4106A
  Power window switches in center console   GF72.29-P-4103A
  Power window switches in rear door liner   GF72.29-P-4104A