I'm having the same problem MANY, MANY people are having with my new AL619.  I have a 2001 Volvo S80 with a service airbag system warning light.  I bought this scanner because you say it specifically can pull the codes for this.  The scanner has version 4.0 of the volvo ABS/SRS software.  I am able to pull engine DTCs from the car with the AL619.  But every time I try to read the ABS or SRS codes it gives me the check connection error code...  I've done it about 20 times with the ignition both "on" and with the car running.  How do I (and apparently many others) get this to work???  The scan tool will also not pull the VIN number automatically either.  I have tried manually entering the VIN and manually inputting the car data.  Here are some of the details of my setup:

 Geez, nothing at all from tech support.  Imagine that!  Hello!!!!!  This seems to be a common problem but no tech support at all.  

 I submitted the problem via this website (via the technical support form).