Anti-Theft Alarm System (Ata [Edw]) - SMART Series 451 Service Manual

SN_Typ 451_us.book Seite 99 Freitag, 30. November 2007 1:56 13
ATA [EDW] system
The anti-theft alarm system (ATA [EDW]) monitors all
relevant inputs for their non-actuated state. If a
change of status is detected at one of the monitored
inputs, an acoustic and visual alarm is issued.
The acoustic signals are output by the alarm signal
siren with inclination sensor. The visual signals are
output via the turn signal indicators. The SAM control
unit is the master control unit for the anti-theft alarm
system (ATA [EDW]).
When armed, the anti-theft alarm system (ATA [EDW])
monitors:
• The doors
• The rear-end door
• The alarm siren with inclination sensor
• The position change of the vehicle
• Movements in the interior compartment
Activation and deactivation
The anti-theft alarm system (ATA [EDW]) is activated
when the vehicle is locked with the transmitter key.
The anti-theft alarm system (ATA [EDW]) is deacti-
vated by unlocking the vehicle with the transmitter
key or by inserting an authorized transmitter key in
the ignition lock and turning circuit 15 ON.

Anti-theft alarm system (ATA [EDW])

Alarm triggering
An alarm is triggered when the SAM control unit
receives a status change from the following compo-
nents:
• ATA [EDW] microwave sensor
• Inclination sensor in alarm siren
• Trunk lid rotary tumbler microswitch
• Right door rotary tumbler microswitch
• Left door rotary tumbler microswitch
Alarm output
The alarm is output via the turn signal indicators and
the alarm siren with inclination sensor.
Interior protection/tow-away protection
The ATA [EDW] microwave sensor is activated approx.
30 s after the vehicle is locked. Interior protection
can be deactivated using the tow-away protec-
tion/interior protection switch.
The inclination sensor in the alarm siren with inclina-
tion sensor registers a positional change of the
vehicle. The inclination sensor, and thus the tow-away
protection, can be deactivated using the tow-away
protection/interior protection switch.
The interior protection or tow-away protection is
reactivated automatically the next time the vehicle is
locked.
Introduction of the smart fortwo, Model Series 451 99