Calling all electrical Gurus

I have an annoying current drain on the Rover 100. I have traced it to the 30A circuit, which is basically all the engine bits.



Disconnecting the main 30A fuse and the current drain drops to something like normal, a few milliamps. Replace the fuse and it goes up to over 200MA, probably near 1Amp but my multimeter doesn’t got that high.



I replaced the multi function relay box today (from a scrapyard car) but that didn't fix it. If I disconnect the ECU then the drain goes away. It must be connected to something the ECU controls but I am at a loss as to what.



I have disconnected most of the plugs I can find, the stepper motor for instance. I think it is something connected to the fact the car doesn't always stop when you remove ignition key. It takes a few seconds to halt.



Has anyone had this problem - it isn't a biggie but it means I have to disconnect battery every evening or battery will be flat?

from the last news http://ift.tt/QeQqYW

via IFTTT