||09-28-2013 10:10 PM
If you have gone through the other posts and checked everything here is some more information.
If you have not done it yet, remove the connectors from the BCM and reseat them. The BCM is the first point that the can-bus lines connect to. Try the can-bus reader again.
If that does not work here is where to start. I am not at home with my service manuals so I can't give specifics.
Do some research and find the two data lines for the can-bus. If you look on google or read through some posts you can find the OBDII pin out. I don't know the pins off the top of my head.
Next you need to check the resistance of those two lines with the BATTERY DISCONNECTED. If the line is not broken you will get 60 ohms. If you get an open or 120 ohms the line is broke somewhere. Let us know what you get and I can help from there.
Found this page that gives you all the data for checking the resistance of the canbus.
OBD II diagnostic interface pinout diagram @ pinoutsguide.com