Workshop Manuals Factory service & repair Smart
01 Relays and Modules02 Sensors and Switches03 Maintenance04 Engine, Cooling and Exhaust05 Powertrain Management06 Transmission and Drivetrain07 Brakes and Traction Control08 Starting and Charging09 Power and Ground Distribution10 Steering and Suspension11 Heating and Air Conditioning12 Restraint Systems13 Accessories and Optional Equipment14 Body and Frame15 Instrument Panel, Gauges and Warning Indicators16 Lighting and Horns17 Windows and Glass18 Wiper and Washer Systems
Smart ForTwo L3-1.0L (2009)01 · Relays and Modules
01 · Diagnostics

Body Control Module: Description and Operation

Make
Smart
Model
ForTwo
Engine
L3-1.0L
Year
2009
Section
Relays and Modules - Computers and Control Systems › Body Control Module › Description and Operation
Relays and ModulesDescription and Operation · page 1 of 4
Body Control Module: Description and Operation – Smart ForTwo L3-1.0L (2009)

Body Control Module: Description and Operation

GF54.21-P-4157MCU Component Description For The SAM Control Unit

N10/10 SAM control unit

Location

The SAM control unit is located in the footwell on the passenger side.

Task

The SAM control unit supplies control units and electrical components with voltage via limit switches. The individual control units and electrical
components are fused via the fuse and relay blocks contained in the SAM control unit.

The SAM control unit controls the following functions:

^

Drive authorization

^

Central locking

^

Exterior lighting

^

Interior lighting

^

Wiper system

^

Rear window defroster

^

Heated outside mirror (with code (V21) Electrically adjustable and heated outside mirror (FFO))

^

Anti-theft alarm system (with code (V01) Anti-theft alarm system (FFO))

^

Soft top (with model 451.4)

Requests are conveyed to the SAM control unit via data bus systems or via read-in switches and sensors.
The SAM control unit is a subscriber on the Controller Area Network (data bus/CAN bus) (CAN).

The following components are read in to control the functions:

Via local interconnect network interior 1 (LIN B):

^

Rain sensor / light sensor (B38)
(with code (V54) Rain/light sensor)

^

Tachometer (A15p4)
(with code (V31) Cockpit clock and tachometer package)

Via local interconnect network interior 2 (LIN C):

^

Alarm siren with inclination sensor (H3/2)
(with code (V01) Vehicle theft alarm (FFO))

^

Microwave sensor (B32)
(with code (V01) Vehicle theft alarm (FFO))

Components read in directly:

^

Transmitter key

^

Transponder coil (L11)

^

Wiper motor (M6/1)

^

Rear-end door wiper motor (M6/4) (on model 451.3)

^

Heated rear window switch (N23s1)

Pinch or Ctrl + scroll to zoom. Double-tap to reset.

The same page in: ForTwo L3-1.0L (2009), ForTwo L3-1.0L (2009), ForTwo L3-1.0L (2009), ForTwo L3-1.0L (2009).

Parts & tools for this job For 2009 Smart ForTwo 1.0L

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