E6 code

I just bought an 88 Venture,it was a basket case electrically,I have almost everything working now,but I gat an E6 on the air ride screen,any suggestions on where to start looking for the problem.I have removed the rear luggage rack and have ready access to the air componets,any help would be greatly appreciated,also you guys have a great forum here,glad to be a part of it.

First thing to do is the resoldering that is detailed in link below it does refer to an E4 error, but it can't hurt to do it for this one also.

http://www.venturerider.org/forum/showthread.php?t=493

Diagram of E6 troubleshooting attached.

Also check all the connections on the rear of bike involved with CLASS, there are at least 4, counting main harness 20 pin.

Gary