My wheel sensors are good but I have not had the codes read yet. My ABS unit does not cycle when the car starts (or after warning light timeout) and the ABS light is on. I want to trouble shoot but I do not have a schematic that shows the necessary information. Can anyone help me with a schematic that shows the ABS control components? I have DC power to the unit on the big multi pin connector to the ABS unit, but there is a 2 pin connector that I am not sure what its purpose is.