Illustrated on model 207.3 |
N10/2 | Rear SAM control unit with fuse and relay module |
P54.21-2824-11
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 |
N10/2 | Rear SAM control unit with fuse and relay module |
P54.21-3016-11
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 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
Reading in of sensors and signals
The input factors are read in over 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, rear window roller sun blind motor (M24b1) (model 207.3 with code 540 (Electric roller sun blind for rear window))
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 (Seat climate control for driver and front passenger):
Left front seat ventilation blower regulator (N29/5)
Right front seat ventilation blower regulator (N29/6)
Without code 275 (Memory package):
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 (Anti-theft alarm system (ATA)):
Pedestrian protection Hall sensor + engine hood ATA [EDW] switch (A38/1) (with code U60 (Active engine hood (pedestrian protection)))
Left engine hood contact switch (S62/43) (without code U60 (Active engine hood (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))
Interior protection and tow-away protection control unit (N26/6) (on model 207.3 with code 882 (Interior monitoring))
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
Energy management
Rear area exterior lights (ABL)
Heated rear window
Seat heater (SIH) (with code 873 (Seat heater for driver and front passenger) or with code 401 (Seat climate control for driver and front passenger))
Electric seat ventilation (with code 401 (Seat climate control for driver and front passenger))
Anti-theft alarm system (ATA [EDW]) (with CODE 551 (Anti-theft 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 trunk 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 (Electric roller sun blind for rear window))
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 (Seat climate control for driver and front passenger):
Left front seat ventilation blower regulator
Right front seat ventilation blower regulator
With code 873 (Seat heater for driver and front passenger) or code 401 (Seat climate control for driver and front passenger):
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).