Diagnosis - SMART Fortwo 451 Series Introduction Into Service Manual

General
The network architecture allows external access
to the individual control units of the CAN bus
systems.
The vehicle and all of its equipment features can
be identified using Star Diagnosis. This enables
accurate fault evaluation and rectification and the
analysis of vehicle-specific values and parame-
ters.
Diagnosis Assistance System (DAS)
The data link connector (X11/4) is located in the
vehicle interior on the underside of the instru-
ment panel on the driver side.
Diagnosis-capable control units:
• Instrument cluster (A1)
• High-voltage crash sensor control unit (N2/1)
• Restraint systems control unit (N2/7)
• SAM control unit (N10/10)
• Electronic selector lever module (N15/5)
• Heater/AC operating unit (N23)
• ESP control unit (N47-5)
• Power steering control unit (N68)
• Battery management system control unit
(N82/2)
• On-board charger 3 kW (N83)
• Powerline Gateway control unit (N83n1)
• On-board charger 22 kW (N83/10)
(with code (908) 22 kW on-board charger)
• Drivetrain control unit (N127)
• Power electronics control unit (N129/1)
Introduction of smart fortwo electric drive (3rd Generation) • Model Series 451
X11/4 Data link connector

Diagnosis

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