Internal illumination, general - GF82.20-P-9611-01C

Interlinkage

Fig 1: Identifying Internal Illumination Interlinkage Components

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Function

When one of the doors is opened the internal illumination is switched on in the overhead control panel control module (N70) as well as the associated entrance/exit lamp.

If a rear door is opened only the rear dome lamp (E15/3) is switched on.

When the ignition is "OFF" and a door is opened the interior illumination and entrance/exit lamps are switched off automatically after approx. 5 min. by the overhead control panel control module (N70).

If the interior illumination is switched on in the overhead control panel control module (N70) or rear dome lamp (E15/3) by a switch in the overhead control panel control module (N70), switch-off is accomplished automatically after approx. 30 min. when the ignition is in the "OFF" position and the doors are closed.

Function sequence

Front dome lamp

The door switches (S17/3, S17/4) conduct a ground signal to the PSE control module (combined) (A37).

The PSE control module (combined) (A37) sends a CAN message "door open" to the overhead control panel control module (N70).

Rear dome lamp

The door switches (S17/5, S17/6) send a ground signal to the PSE control module (A37). The PSE control module (A37) switches on the rear dome lamp (E15/3).

If the switch for the rear dome lamp is actuated on the overhead control panel control module (N70), the overhead control panel control module (N70) sends a CAN message "rear dome lamp ON" to the PSE control module (A37). The PSE control module (A37) switches on the rear dome lamp (E15/3).

Entrance/exit lamps

When a door is opened the associated door switch sends a ground signal to the PSE control module (A37). The PSE control module (A37) sends a CAN message "door open" to the passenger compartment bus. The door control module for the open door receives the CAN message and switches on the associated entrance/exit lamp.