Originally Posted by
DazzaTD5
I would start with something more basic...
*Remove the battery, then behind that is a plastic cover, remove that and you will see the alum silver looking Transfer Case Control Module.
*remove the 3 plugs, unclip the unit, remove it.
*Look at the pins in the socket, I can bet there is green corrosion in the plugs, you can also bend the 4 tabs open, pop the cover and look inside, again you may find green corrosion on the board.
*In both cases its no good and needs replacing.
*You can buy a used one from a same same model and plug it in and clear your faults.
Go from there
