2003 (10/02) R50 has a 0.45A drain with the key off, battery drains down over a couple of days. I have traced it to Fuse 4 in the footwell fuse box, which feeds pin 27 of X254 at the BCM. I'm not liking this already... Anyone have a good handle on the workings of the Gen1 body control? If I can find out which functions F4 supplies, I can try to determine if there is a fault downstream of the module, or the module has gone west.

Thanks in advance, any who may have this arcane knowledge, or can point me to a functional diagram of the BCM