Component Description For Rear SAM Control Unit With Fuse And Relay Module - GF54.21-P-6030CA

MODEL 207.3/4

Illustrated on model 207.3

Fig 1: Identifying Rear SAM Control Unit With Fuse And Relay Module - Illustrated On Model 207.3

Location

The rear SAM control unit is on the right inside the luggage compartment behind the side trim of the load compartment.

Shown on model 207.4

Fig 2: Identifying Rear SAM Control Unit With Fuse And Relay Module - Shown On Model 207.4

Location

The rear SAM control unit is located at the right in the trunk under the cargo area trim.

Task

The rear SAM control unit has the following tasks:

Reading in of sensors, pickups and signals
Evaluation of input factors
Controlling functions
Actuation of components

The fuse and relay module of the rear SAM control unit supplies various systems and control units with power via limit switches, depending on the function sequence in question.

The following tasks are the responsibility of the fuse and relay module:

Voltage supply to components
Power supply and relay switching
Switching consumers using relays

Detailed information is available in the "Fuse and relay box, as-built configuration" function description.

Reading in of sensors, pickups and signals

The input factors are read in via the following connections:

Direct line
Local Interconnect Network (LIN)
Interior CAN (CAN B)

Direct line

The signals from the following components are read via direct lines:

Rear window antenna amplifier 1 (A2/71) (model 207.3)
FM, AM and CL antenna amplifier (A2/55) (model 207.4)
Left fuel level indicator sensor (B4/1)
Right fuel level indicator sensor (B4/2)
Trunk lid rotary tumbler switch (M14/7s1)
Tank cap central locking motor (M14/10)
Hall sensor for rear window roller sun blind motor (M24b1) (model 207.3 with code (540) Roller sun blind)
Left rear seat belt buckle switch (S68/5)
Right rear seat belt buckle switch (S68/6)
Trunk lid external operation switch (S88/8)
Trunk lid emergency opening switch (S88/10) (with code (494) USA version)
With code (401) Front deluxe seats, incl. seat heating and seat ventilation:
- Left front seat ventilation blower regulator (N29/5)
- Right front seat ventilation blower regulator (N29/6)
Without code (275) Memory package for electrically adjustable front seats:
- Driver seat partially electric seat adjustment switch (S22/1)
- Front passenger seat partially electric seat adjustment switch (S23/1)
On model 207.3:
- Left rear backrest inclination switch (S54/5)
- Right rear backrest inclination switch (S54/6)
- Left rear backrest lock switch (S54/7)
- Right rear backrest lock switch (S54/8)
With code (551) Antitheft alarm system (ATA [EDW]):
- Engine hood switch pedestrian protection + ATA Hall sensor (A38/1) (with code (U60) Pedestrian protection)
- Left engine hood contact switch (S62/43) (without code (U60) Pedestrian protection)
with code (889) Keyless-Go:
- Trunk lid KEYLESS-GO button (S62/21)
with code (887) Valet Parking
- Trunk lid contact switch (S88/6)

LIN

The signals from the following sensors are read in via LIN:

Battery sensor (B95) over the on-board electrical system LIN (LIN B7)
With code (551) Antitheft alarm system (EDW) via rear SAM-LIN (LIN B4):
- Alarm siren (H3/1) (model 207.3 up to 31.5.10, model 207.3 as of 1.6.10 without code (494) USA version, model 207.4 without code (494) USA version)
- Interior protection sensor (master) (A26/13) (on model 207.4 with code (882) Interior monitoring (only with ATA))
- Interior protection and tow-away protection control unit (N26/6) (on model 207.3 with code (882) Interior monitoring (only with ATA))

Interior CAN

The signals are read in by the rear SAM control unit over the interior CAN.

The functions that use these signals are described in the individual function descriptions (see block diagram or function schematic).

Evaluation of input factors

The input factors are evaluated by the microprocessor and the corresponding components are actuated.

Controlling functions

On-board electrical system management
Exterior lights (ABL) for vehicle rear
Heated rear window
Seat heater (with code (873) Seat heater for left and right front seat or with code (401) Front comfort seats, incl. seat heating and seat ventilation)
Electric seat ventilation (with code (401) Front comfort seats, incl. seat heating and seat ventilation)
Antitheft alarm system (ATA [EDW]) (with code (551) Antitheft alarm system (ATA [EDW]))

Actuation of components

The actuation of the components takes place via the following connections:

Direct line
LIN
Interior CAN

Direct line

The following components are actuated via direct lines:

Inner left rear lamp unit (E3/1)
Inner right rear lamp unit (E4/1)
Right luggage compartment lamp (E18/4)
Left trunk lamp (E185)
Left license plate lamp (E19/1)
Right license plate lamp (E19/2)
Center brake lamp (E21)
Trunk lid ambient lamp (E40)
Quiescent current cutout relay (F32k2)
Trunk lid central locking motor (M14/7)
Tank cap central locking motor
Rear window roller sun blind motor (M24) (model 207.3 with code (540) Roller sun blind)
Multicontour seat pneumatic pump (M40) (with code (409) Left/right front multicontour seats)
Rear window heater (R1)
Reversing camera power supply module (N66/10) (with code (218) Reversing camera without code (498) Japan version)
Trunk lid emergency opening switch illumination (with code (494) USA version)
With code (401) Front deluxe seats, incl. seat heating and seat ventilation:
- Left front seat ventilation blower regulator
- Right front seat ventilation blower regulator
With code (873) Heated seats for left and right front seats or code (401) Front deluxe seats, incl. seat heating and seat ventilation:
- Left front seat sitting surface heated cushion (R13/1)
- Left front backrest heated cushion (R13/2)
- Right front seat sitting surface heated cushion (R13/3)
- Right front backrest heated cushion (R13/4)

LIN

The following component is actuated via LIN with code (551) Antitheft alarm system (ATA):

Alarm siren (model 207.3 up to 31.5.10, model 207.3 as of 1.6.10 without code (494) USA version, model 207.4 without code (494) USA version)

Interior CAN

The signals are sent over the interior CAN by the rear SAM control unit.

The functions that use these signals are described in the individual function descriptions (see block diagram or function schematic).

Wiring diagram for rear SAM control unit with fuse and relay module (N10/2)	MODEL 207.3/4Sheet 1	PE54.21-P-2108-97EAA
	MODEL 207.3/4Sheet 2	PE54.21-P-2108-97EAB
	MODEL 207.3/4Sheet 3	PE54.21-P-2108-97EAC
	MODEL 207.3/4Sheet 4	PE54.21-P-2108-97EAD
	MODEL 207.3/4Sheet 5	PE54.21-P-2108-97EAE
	MODEL 207.3/4Sheet 6	PE54.21-P-2108-97EAF
	MODEL 207.3/4Sheet 7	PE54.21-P-2108-97EAG