Backup Lamp Actuation, Function - GF82.10-P-3011RR

Model 190 

Function requirements, general 

• No overvoltage or undervoltage (operating voltage range U ≥ 8 ≤ 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 by the front SAM control unit when the "R" gear range is engaged.

The request to "Engage gear range R" is defined by the corresponding selector lever position. The dual clutch transmission control unit (N15/13) sends the gear range via the drive train CAN (CAN C1), powertrain control unit (N127), and chassis CAN 1 (CAN E1) to the front SAM control unit.

The front SAM control unit sends the "switch on backup lights" request via the interior CAN to the rear SAM control unit with fuse and relay module (N10/2).

The rear SAM control unit receives this signal and directly actuates the backup lamp (E7e2) in the center rear lamp unit (E7).