3315632 - E3051 ELECTRIC REAR WINDOWS - Functional description
Functional description
The control unit M82 manages the operation of the electric rear windows. The direct supply for the control unit M82 comes in through special fuse B17 . The ignition-dependent supply (INT/A) reaches pin 4 of connector B of relay R1 , from the line protected by fuse F9 , both contained in the junction unit B1 . The ignition-dependent supply (INT/A) of the line protected by fuse F5 of the junction unit B1 supplies the electric window control unit on the driver's door H44 and the switches H53 and H54 (on rear right and rear left doors respectively). Pins 3 of connector B and 1 of connector E supply the earth, C31 . When the switches are operated, they send the command signals (positive and negative) to the rear electric window control unit M82 , but only if the safety switch located in the unit H44 is in the enablement position. If it is not, it cuts off the supply to both the switches on the driver's door and the switches on the rear doors. With the safety switch in the enablement position, the switches are illuminated when the ignition is on (MAR). The block switch is also illuminated when the ignition is on, by a specific LED supplied by the line protected by fuse F5 of junction unit B1 :The above signals arrive:
- at pins 3 and 4 of connector A from switch H53 or from the switch H44 , to control the left electric window
- at pins 1 and 2 of connector C from switch H54 , to control the right electric window
- at pins 5 and 6 of connector A from switch H44 , to control the right electric window.
The control unit M82 controls the electric windows as described above:
- from pins 1 and 2 of connector D it sends commands to the rear left motor N65 ;
- from pins 3 and 4 of connector D it sends commands to the rear right motor N66 .