Adjust front multicontour seats, function - GF91.25-P-2002S

MODEL 215, 220 with CODE (404b) Multicontour backrest driver seat 

MODELS 215, 220 with CODE (405b) Multicontour backrest passenger seat 

Block diagram for multicontour backrest of front seats 

Function requirements:

• Circuit 15c or circuit 15R ON
• respective door open for t >20 s
• Multicontour backrest control module activated:

The left front multicontour backrest control module (N32/15)/ right front multicontour backrest control module (N32/16) is activated when it receives an enable signal via a discrete line from the left front seat adjustment control module with memory (N32/1)/right front seat adjustment control module with memory (N32/2)

Manual adjusting of the air cushion groups in the multicontour backrest 

The switch conditions of the multicontour backrest switch group in the left front seat (S109)/and right front seat (S108) are read in by the left front multicontour backrest control module (N32/15)/right front backrest control module (N32/16). As a result of this the control module fills and empties the corresponding air cushion groups for as long as the switch is pressed and the function prerequisites are met.

At the same time data are exchanged between the relevant control module and the left front seat adjustment control module with memory (N32/1)/right front seat adjustment control module with memory (N32/2) via a discrete line so that storage and subsequent calling up of air cushion adjustments performed manually is possible via the memory feature.

Automatic adjustment of the air cushion groups in the multicontour backrest via the memory feature 

The storage and calling up of adjustments performed manually is triggered and controlled by the left front door control module (N69/1)/ right front door control module (N69/2). To do this, the door control module exchanges information with the relevant seat control module via CAN messages.

If this receives the request to store, the pressure values of the air cushions conveyed from the multicontour backrest control module are stored in its non-volatile memory. If there is a later request from the door control module to call up memory items, the stored air cushion pressure values are provided to the multicontour backrest control module again. Thereupon this control module fills/empties the air cushions as per the stored values.

Change with code 344 and 343

As of 1.9.02 the left front dynamic seat control module (N32/19) and right front dynamic seat control module (N32/22) are responsible for the memory feature.

	Left front seat adjustment control module with memory, location/task		GF91.29-P-2106S
	Right front seat adjustment control module with memory location/task		GF91.29-P-2107S
	Front driver door control module position / task / design / function		GF72.29-P-4105S
	Front door control module, driver's side location/design	as of 1.9.02	GF72.29-P-4115S
	Front passenger side door control module, location/task/design/function		GF72.29-P-4106S
	Front door control module, front passenger side location/design	as of 1.9.02	GF72.29-P-4116S