I believe you have to short something or move a fuse and it will blink and give you a code which indicates the problem. Check the online manual and it'll give you instructions and the codes.
You haven't got a speed demiliter on it have you? because cutting the speed sensor wire will probably do it
Thomas,
Thanks. So that's the mythical Check Engine light! I've got a Service Manual, so I should be able to look up the procedure for discovering the fault code in there somewhere. Let's hope it's not too serious. Thanks again
Adrian