It's very easy to spend someone else's money but P0702 does point to the PCB. If you are certain your new battery is the correct one and fully charged then I would think it's very likely the PCB at fault. Incidentally disconnecting the battery does nothing on the 2.7 CRD, only works on petrol models. You can get a ELM 327 interface fairly cheaply (make sure it's a genuine one not a Chinese knock off) and download jeepdiag app to your smart phone and you can read and erase these codes. Perhaps do this first and see which codes come back?
When Grippy mentioned the wires in the door I went straight out and checked them ( it was at night and was using a torch ) it turns out that the two largest ones were damaged further back I repaired them but made no difference. Do the codes need to be cleared before limp mode resets itself?
You will just be fumbling in the dark without reading and clearing the codes correctly.
Get an ELM327 adapter, go to jeepswj.com and download the jeepdiag app and report back what codes are left after clearing.
__________________
Quote:
Originally Posted by Barefoot
Hey I wonder what happens if I plug this wire in therAAAAAGGGGGGHHHH............
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