Low-beam actuation, function - GF82.10-P-3002A

MODELS 215.###, 220.02# /06# /07# /12# /16# /17# 1# 

Fig 1: Low-Beam Actuation Function Diagram

Functional sequence 

1. Basic requirement:
   • Steering column switch (S4) in "low beam" position
   • The exterior lamp switch (S1) is set to parking lamp :
     • the standing and parking lamps (E1e3 and E2e3) in the right-hand lamp assemblies,
     • "terminal 15R ON",
     • the standing and parking lamps (E3e2, E3e8, E4e2 and E4e8) in the rear lighting system and the license plate lamps (E19/1 and E19/2) are driven.
   • Where a trailer coupling is present the trailer recognition control module (N28/1) switches additional power to the trailer's tail lamps and license plate lamp to the AHV, 13-pin trailer hitch socket (X58).
2. The exterior lamp switch (S1) is set to low-beam position and sends a "Driving light ON"  signal to the left front SAM control module (N10/6).
3. The left front SAM control module registers the new switching situation, actuates the low beam lamp (E2e2) in the right-hand lamp assembly and at the same time it sends "Driving light ON"  to the right front SAM control module (N10/7) signals over the databus (1).
4. The right front SAM control module (N10/7) actuates the low-beam (E1e2) in the left-hand lamp assembly.

   The standing and parking lamps in the left and right-hand lamp assemblies remain active when the driving light is switched on. Actuating the instrument cluster (A1) with the "Driving light ON" signal triggers an acoustic warning signal if the electronic key has been removed and the driver's door is open.