Triggering anti-theft alarm (ATA), function

P80.50-2008-09

Illustrated on model 202 sedan with
code 882 (interior motion sensor)

A26/14 Infrared transmitter and receiver unit (interior motion sensor)

A37 PSE control module (combined)

B33 ATA tow sensor

CAN Controller area network

E3/e1 Left taillamp, turn signal lamp

E4/e1 Right taillamp, turn signal lamp

S9/1 Stop lamp switch (up to 2/98)

S17/3 Left front door switch

S17/4 Right front door switch

S17/5 Left rear door switch

S17/6 Right rear door switch

S17/8 Trunk lamp switch

S62 Engine hood switch (ATA)

S85/2 ATA interior motion sensor/
anti-towing sensor/status indicator switch

E6/1 Left turn signal lamp

E6/2 Right turn signal lamp

E15/3 Rear dome lamp

E22/1 Left auxiliary turn signal lamp

E22/2 Right auxiliary turn signal lamp

H3/1 Alarm signal siren with additional battery

N10/1 Signal-acquisition and actuation control module

N70 Overhead control panel control module

The anti-theft alarm (ATA) can be triggered by

 actuation of an exterior surface contact

 the anti-towing sensor (AS)

 the alarm signal siren with additional battery (H3/1)

On vehicles with code 882 (interior motion sensor) in addition by:

 the interior motion sensor (IMS).

Assuming that the corresponding inputs have been activated by activation of the ATA.

Function sequence
The activated inputs are checked three times per second in series by the PSE control module (combined) (A37).

If two sequential checks of the same input do not indicate the non-activated state, the PSE activates an acoustic as well as an optical alarm.



Moreover, on vehicles with code 491 () a panic alarm can be triggered with the panic switch on the infrared remote control key.