186003027 - E2510 COURTESY LIGHTS - FUNCTIONAL DESCRIPTION

Operational description

The supply for the front courtesy lights ( G10 ) and the rear ones ( G25 and )G26 reaches the battery directly (maxifuse J/B1 of B5 ) via the fuse F10 from the junction unit B1 . They are switched on through a direct earth signal (on permanently) at pin 1 of the respective courtesy lights or, at pin 3, coming from the integrated services control unit M40 . The control unit M40 receives a direct supply from the battery - pin 8 of connector B - from the line for maxifuse J/B2 of B5 via the shunt fuse B19 and ignition operated (INT) - pin 7 of connector B - from the line for shunt fuse B26 . Pin 13 of connector B provides the earth.

The junction unit receives the unlocking and opening signals for the doors which arrive:

• at pins 2 and 3 of connector B: opening of one of the front doors N50 and N51 (left and right, respectively);
• at pins 12 and 18 of connector B: opening of one of the rear doors N55 and N56 (left and right, respectively).

On the basis of the above signals and the control logic illustrated previously, the control unit M40 sends timed earth signals from pins 10 and 1 of connector B which operate the front courtesy lights G10 and the rear ones G25 and G26 .