Manual raising/lowering of power windows, function - GF72.29-P-3006SK

MODEL 171.4

Fig 1: Manual Raising/Lowering Of Power Windows Function Diagram

Courtesy of MERCEDES-BENZ USA

Function requirements

C. 15 ON or c. 15R ON
No overvoltage or undervoltage

Function abort

Function requirements are not satisfied

Driver-side control point

Actuation of the left power window switch (S20/1s1) and right front power window switch (S20/1s2) to the first catch point is read in by the left door control unit (N69/1).

The left front power window motor (M10/3) is actuated directly by the left door control unit (N69/1).

The request for the right front power window motor (M10/4) is transmitted to the right door control unit (N69/2) via CAN B (CAN) which then performs actuation.

Passenger control point

Actuation of the passenger-side power window switch (S21/2) to the first catch point is read in by the right door control unit (N69/2). The right front power window motor (M10/4) is actuated directly by the right door control unit (N69/2).

Actuation triggered by the passenger-side power window switch group (S21/2), can be interrupted by a request of the driver-side power window switch group (S20/1)

The power windows can be actuated up to 5 minutes after c. 15R OFF, if the front doors have not yet been opened and the vehicle has not been locked from outside.

The door status (signal for door contact switch) transmits the rear SAM control unit with fuse and relay module to the CAN B (CAN). The status of the central locking (CL) is transferred to the CAN B (CAN) by the EIS control unit (N73).

Driver-side power window switch group, location/task	GF72.29-P-4126
Front passenger power window switch, location/task	GF72.29-P-4119SK
Front power window motor, location/function	GF72.29-P-4108
Left door control unit, location/task	GF72.29-P-4122SK
Right door control unit, location/task	GF72.29-P-4123SK
Electronic ignition switch control unit, location/task	GF80.57-P-4120SK
Rear SAM control unit with fuse and relay module, location/task	GF54.21-P-4130SK
Door contact switch, location/task/design/ function	GF82.20-P-4102SK