Brake Lamp: Description and Operation

GF82.10-P-3010B Stop Lamp Control, Function

MODEL 203 up to Model Year 8







Stop lamp actuation, function Shown on model 203 up to 1.8.01
1 Interior CAN
2 Engine compartment CAN
E3e4 Brake light
E4e4 Brake light
E21 Center high-mounted stop lamp
N10/1 Front SAM control module with fuse and relay module
N10/2 Rear SAM control module with fuse and relay module
N28/1 Trailer recognition control module
N47-5 ESP and BAS control module
N73 DI control module
S9/1 Stop lamp switch
X58 Trailer hitch socket (13-pin)

Operating procedure
Basic requirements:
- The transmitter key (A8/1) is set to position "circuit 15 ON" and the service brake is actuated.

1 Voltage is applied over the switching contact of the stop lamp switch (S9/1) to circuit 54 on the ESP and BAS control module (N47-5) and the electronic ignition switch control module (N73) is switched.
The stop lamp switch (S9/1) not applicable as of 1.8.01.The stop lamp signal is generated directly in the ESP and BAS control module (N47-5).

2 The electronic ignition switch control module (N73) converts the voltage signal and reports to the front SAM control module with fuse and relay module (N10/2) over the CAN interior "stop lamp ON".
The direct line from the ESP and BAS control module to the rear SAM control module with fuse and relay module (N10/2) should prevent any delayed switching on of the stop lamp (E3e4 and E4e4).

3 The voltage signal is sent from the front SAM control module with fuse and relay module (N10/1) over another direct line to the rear SAM control module with fuse and relay module (N10/2). Up to 1.8.01 the ESP and BAS control module (N47-5) will also send the voltage signal parallel for the stop lamp switch (S9/1) over a direct line to the front SAM control module with fuse and relay module (N10/1).
4 The rear SAM control module with fuse and relay module (N10/2) actuates the stop lamp (E3/4 and E4/4) and the center high-mounted stop lamp (E21).