Backup lamp actuation, function - GF82.10-P-3011FQ

MODEL 218 

Function requirements, general 

• No overvoltage or undervoltage (operating voltage range U ≥7 ≤17.5 V)
• Terminal 15 ON

The electronic ignition lock control unit (N73) transmits the circuit 15 status to the front SAM control unit with fuse and relay module (N10/1) over the interior CAN (CAN B).

Backup light actuation, general 

The backup light actuation enables the traffic lane to the rear of the vehicle to be illuminated when backing up.

Function sequence for backup light actuation 

Backup light actuation is activated when "gear range R" is engaged. Gear range "R" is engaged by the fully integrated transmission control unit (Y3/8n4). The fully integrated transmission control unit then sends "Gear range R engaged" status over the drive train CAN (CAN C), CDI control unit (N3/9) (with diesel engine) or ME-SFI [ME] control unit (N3/10) (with gasoline engine), chassis CAN (CAN E) (up to 28.02.2013) or chassis CAN 1 (CAN E1) (as of 01.03.2013) to the front SAM control unit.

The front SAM control unit sends the "Reverse gear engaged" signal over the interior CAN to the rear SAM control unit with fuse and relay module (N10/2) and also on vehicles with code (550) Trailer hitch to the trailer recognition control unit (N28/1).

The rear SAM control unit receives this signal and actuates the left backup lamp (E3e3) in the left rear lamp unit (E3) and the right backup lamp (E4e3) in the right rear lamp unit (E4).

On vehicles with code (550) Trailer hitch, the trailer recognition control unit receives the request and actuates the backup lights on the trailer via the trailer socket (X58).