My v2 sti's DCCD light just flashes the green 0 all the time as if something is disconnected but all appears to be connected. Is there any method of fault finding on this system or and wiring diagrams available anywhere. Is it commont for the toggle switch to break? It was working when i was fitting the last new engine but once id finished and whent to start it up the dccd light started flashing and has been ever since