3315627 - E3050 ELECTRIC FRONT WINDOWS - Functional description (Right hand drive)
Functional description
Control unit M81 controls the operation of the electrically-operated front windows. The power supply to control unit M81 reaches pin 2 of connector E from the line of maxifuse CENTR of B5 , protected by fuse F15 of junction unit B1 . The ignition-activated power supply (INT/A) reaches pin 4 of connector B from the line of relay R1 , protected by fuse F9 : both are contained within junction unit B1 . Pins 3 of connector B and 1 of connector E supply earth, C20 . Switches H44 (electrically-operated window control unit on driver's door) and H50 (passenger side front door electrically-operated window switch) are supplied when the ignition is turned on (INT/A) from a line from fuse F5 , of junction unit B1 , and are connected respectively to earth C15 and C20 . This means they are also lit when the key is turned to MAR. This means they are also lit when the key is turned to MAR.When the switches are operated, they send control signals (positive and negative) to control unit M81:
- to pins 3 and 4 of connector A from switch H44 , to control the left-hand electrically-operated window;
- at pins 5 and 6 of connector A from switch H44 ; or pins 1 and 2 of connector C from switch H50 , to control the right electric window
Control unit M81 controls the electrically-operated windows as described previously:
- pins 1 and 2 (3 and 4 for 2.0 TS versions) of connnector D send commands to the left electric front window motor N60 .
- pins 3 and 4 (1 and 2 for 2.0 TS versions) of connector D send commands to right electric front motor N61 .