SAM control unit
58
Electrical system
Introduction of smart fortwo electric drive (3rd Generation) • Model Series 451
All fuses are housed on the SAM control unit.
Exceptions:
• In the high-voltage adapter plate fuse box:
- High-voltage fuses
• Fuse holder in battery recess (12 V battery):
- F 10/1 (40 A) Vacuum pump fuse
- F 10/3 (60 A) High-voltage battery heater
fuse
• In circuit 30 line to SAM:
- F 91 (125 A) SAM prefuse
Fuses 1-31 and reserve fuses R1-R9 are located
on the front of the
SAM control unit, fuses 32-35 are on the back.
The SAM control unit is linked with the engine
compartment CAN (CAN C) in order to exchange
data. It communicates with the following compo-
nents:
• Instrument cluster
•ESP control unit
•Restraint systems control unit
• Heater/AC operating unit
• Power steering control unit
• Yaw rate and lateral acceleration sensor
• Drivetrain control unit
• Steering angle sensor
• Vehicle diagnosis/DAS datalink connector
The SAM control unit communicates via LIN with
• Microwave sensor (interior/ATA)
• Rain sensor/light sensor
• Alarm siren with inclination sensor
P54.21-3283-00
Front of SAM control unit
P54.21-3284-00
Back of SAM control unit
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