1. if it plugged into the digital sidecar, check the ribbon cable is made properly. (if this was the problem with our sidecar (we havn't retested it yet) then if the solenoid is supposed to be in PWM slot 1, put it in slot 3 and try, at the least this was a problem we seemed to have....
PDF on fixing the DB37 cable:
http://www.usfirst.org/sites/default...structions.pdf