3315630 - E3050 ELECTRIC FRONT WINDOWS - Functional description
Functional description
The integrated services control unit M40 manages the operation of the electric front windows. The direct supply for the front electric windows reaches control unit M40 at pins 4 and 6 of connector A from the line protected by fuses F56 and F60 of junction unit B45. The ignition-controlled supply (15/54) for M40 arrives via relay T1 and fuse F13 of junction unit B2 at pin 11 of connector B; Pins 1 and 7 of connector A of M40 provide the earth. Switches H44 (electrically-operated window control unit on driver's door) and H50 (passenger side front door electrically-operated window switch) are supplied by the line coming from pin 14 of connector A of M40.When these switches are operated, they send control signals (negative) to control unit M40:
- pins 12 and 5 of device H44 send signals to pins 16 and 153 of connector A of control unit M40, respectively, to operate the left electric window.
- pins 7 and 10 of device H44 send signals to pins 13 and 11 of connector A of control unit M40, respectively, to operate the right electric window.
- Pins 2 and 1 of device H50 send signals to pins 10 and 12 of connector A of control unit M40, respectively, to operate the right electric window.
Control unit M40 controls the electrically-operated windows as described previously:
- pins 8 and 9 of connnector A of M40 send commands to the left electric front window motor N60.
- pins 3 and 2 of connector A of M40 send commands to right electric front motor N61.