Component description for rear SAM control unit with fuse and relay module - GF54.21-P-6030G

MODEL 463.306/336/346 as of model year 2011/YoM 10

MODEL 463.202/222/236/237 as of model year 2009/YoM 08

MODEL 463.247/248/249/254 up to 31.8.08 as of model year 2007

MODEL 463.270/271/303/340/341 as of model year 2007

Location

The rear SAM [signal acquisition and actuation module] is located on the center tunnel.

Fig 1: Identifying Rear Signal Acquisition And Actuation Module (SAM)

Courtesy of MERCEDES-BENZ USA

Task

The rear SAM is connected for exchanging data over the interior CAN (CAN-B).

Limit switches supply systems and control units with voltage to match the function sequence. The requests are sent to the rear SAM over the interior CAN or over read-in switches and sensors.

The rear SAM reads in signals from the restraint systems control unit (N2/7) discretely and passes these on.

The individual components are protected via fuses contained in the fuse and relay block.

Control of the following functions

Rear lamps
Antitheft alarm system
(with code (FZ5) Antitheft alarm system (ATA [EDW]) or code (FZ8) Antitheft alarm system with interior protection)

Discrete inputs

STH radio remote control receiver (A6/1)
(with code (H12) auxiliary heater)
Fuel level sensor (B4)
ATA (EDW) inclination sensor (B33)
(with code (FZ5) Antitheft alarm system (ATA [EDW]) or code (FZ8) Antitheft alarm system with interior protection)
Alarm signal horn with additional battery (H3/1)
(with code (FZ5) Antitheft alarm system (ATA [EDW]) or code (FZ8) Antitheft alarm system with interior protection)
Stop light switch (S9/1)
Left front door contact switch (S17/3)
Right front door contact switch (S17/4)
Left rear door contact switch (S17/5)
Right rear door contact switch (S17/6)
Liftgate contact switch (S17/18)
ATA [EDW] hood switch (S62)
(with code (FZ5) Antitheft alarm system (ATA [EDW]) or code (FZ8) Antitheft alarm system with interior protection)

Discrete outputs

Left taillights (E3)
Rear fog lamp (E3/1)
Right taillights (E4)
Left rear side marker lamp (E6/3) (with code (ZU8) USA version)
Right rear side marker lamp (E6/4) (with code (ZU8) USA version)
Backup lamp (E7)
Rear dome lamp (E15/3)
(with model 463.236/237/341/270/271 as of 1.9.08, model 463.346)
Left rear dome lamp (E15/8)
(with model 463.222/236/237/336/340/341/346/270/271)
Right rear dome lamp (E15/9)
(with model 463.222/236/237/336/340/341/346/270/271)
Right front door entrance luminescent film (E17/17)
(with model 463.222/236/237/336/340/341/346)
Left front door entrance luminescent film (E17/18)
(with model 463.222/236/237/336/340/341/346)
Right trunk lamp (E18/4)
(except model 463.202/303/306)
Left trunk lamp (E18/5)
(except model 463.202/303/306)
Left license plate lamp (E19/1)
Right license plate lamp (E19/2)
Center high-mounted stop lamp (E21)
DC/AC converter control unit (N24/3)

Switching the following relays

Fuel pump relay (N10/2kA)
Relay 2, circuit 15R (N10/2kB)
Heated rear window relay (N10/2kE)
Relay 1, circuit 15R (N10/2kF)
Fuel filler cap polarity reverser relay 1 (N10/2kG)
Fuel filler cap polarity reverser relay 2 (N10/2kH)
CL [ZV] relay (K44)
Relay for rear-end door wiper motor (K68)
(with model 463.222/236/237/270/271/336/340/341/346)