If I'm reading and comprehending correctly, the -BD module is for MTX w/o ABS. The -BC or -BK module is for ATX w/ or w/o ABS and MTX w/ ABS. Coding is 00001 for AT w/ABS, 00004 for AT w/o ABS but 00002 for MTX either way, but with the different module -BD for... Login to read more.