01-108
 
     
Ultrasonic interior monitoring 
On Board Diagnostic (OBD) 
     
General Information
 
      The ultrasonic interior monitoring system is only 
offered in conjunction with the anti-theft system.  
      The security provided by the anti-theft system is 
enhanced through addition of the ultrasonic 
interior monitoring option.  
      Interior monitoring activates the anti-theft alarm 
when unauthorized attempts are made to enter 
the vehicle through the side windows.  
     
Function  
      The ultrasonic interior monitoring system 
consists of:  
     
Control module for ultra-sound sensors -
J347- 
     Ultra-sound sensor, left for anti-theft warning 
system -G170- 
     Ultra-sound sensor, right for anti-theft warning 
system -G171- 
     
Pa
ge 1 of 44 Ultrasonic interior monitorin
g On Board Dia
gnostic 
(OBD
)
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.BD04.01.4 
01-109
       The ultra-sound sensors in the right and left 
upper B-pillar trims monitor the side windows and 
send the monitoring signal to the control module 
for ultra-sound sensors.  
      If the monitoring signal deviates from the norm, 
the control module for interior monitoring 
activates the alarm via the control module for the 
anti-theft system.  
      In addition to the contact switches in the lock 
units, glass break sensors in side windows as 
well as the conductor loop in rear window, (only 
for Avant), serve for securing the exterior of the 
vehicle.  
      The control module for interior monitoring 
activates the warning lamps next to the door 
locking buttons. These warning lamps provide 
further information regarding the interior 
monitoring system.  
     
       Repair Manual, Electrical Equipment         Interior monitoring can be manually shut off for 
the duration of a door closing via the switch for 
interior monitoring.  
     
       Owner's Manual   
Pa
ge 3 of 44 Ultrasonic interior monitorin
g On Board Dia
gnostic 
(OBD
)
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.BD04.01.4