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Triggering anti-theft alarm (ATA), function - GF80.50-P-2004F

MODEL 202, 208, 210 as of 1.6.98 with CODE (551a) Anti-theft alarm 

Fig 1: Identifying Triggering Anti-Theft Alarm (ATA) Components
G04635733Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

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

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

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

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  .

IMPORTANT

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

  Activating anti-theft alarm (ATA), function   GF80.50-P-2002I
  Alarm triggered by exterior surface contact, function   GF80.50-P-3015A 
  Alarm triggered by interior motion sensor, function Infrared interior motion sensor GF80.50-P-3022A 
    Ultrasonic interior motion sensor (sedan models 202, 210 as of 6/98) GF80.50-P-3022D 
  Alarm triggered by anti-towing sensor, function   GF80.50-P-3023A 
  Alarm triggered by panic switch, function USA ONLY only GF80.50-P-3014B 
  Acoustic alarm, function   GF80.50-P-4005C 
  Optical alarm, function   GF80.50-P-4006C 
  PSE control module (combined) (A37), location/purpose/design/function   GF80.20-P-4106A