There is really no way for you to determine if it is on unless you do the retrofit and see if it works. The car does not come from the factory already turned on. The OBC is in the instrument cluster and the cluster has to be connected to the car to turn it on, so you cannot have it turned on by mail. Unless you remove the cluster, send it to someone, and your cluster is hooked up to another car and then your cluster's OBC is turned on.
If you want to see for sure if it is on then you can try this.
http://www.renntech.org/forums/index.php?showtopic=16650
You hook up one VW 009 wire in slot 23 of the gray connector and touch the other end of the wire to ground. I did this on Varun's 2001 and the OBC worked. But on his car we knew the OBC was turned on because I checked to make sure it was on with a PST2. A local dealer had turned it on some time before we did the retrofit on his car.
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