xanderz

My jeep turned off at a stop while I was driving a month ago and hasn't turned back on since. It cranks, but the engine never starts up. I just found that one of my fuses is blown. This fuse is F20 and it's a 30A fuse. I can't seem to figure out what that fuse is related to and what issues I would have if it was blown. Could this be my issue?

Sorry this is my first time on this site, so I am not sure how to use it.

boxburn

You're in the right place. What year XJ? Auto, manual? 2.5/4.0 Petrol, diesel?

xanderz

96, Auto, 4.0, Petrol

boxburn

96 is the oddball year but it will match something. Is the fuse in the PDC fusebox under the hood or Junction Box inside the cab?

Edit: I'm going to guess JB, PDC doesn't have that many fuses.

xanderz

No, it is the PDC.

boxburn

Okay, last question I hope, LHD or RHD?

xanderz

I just found this on another forum, heres the link.
https://www.cherokeeforum.com/f2/pds...iagram-130063/


Is this correct? Would this be my issue?

xanderz

LHD

boxburn

From that forum post, yes, that fuse is for the Automatic Shutdown circuit so certainly would cause your no-start. The question now is why did it blow. I'd recommend before throwing a new fuse in there to take a look at your wiring in the engine bay and make sure that the loom isn't rubbing anywhere as it can and does happen. Also pull the ASD relay and check for any corrosion or signs of heat/melting, not that I'd expect any there. If you can't see anything wrong, swap the fuse out and see if it works. It could be a one-off pop.

The diagrams I have would not have given me that PDC so good effort on your part linking it. I shall now save that image for myself. Keep us posted.

Philippe L.

This may help you (1996-model):

boxburn

Also saved.

xanderz

What do you mean by rubbing, since aren't the wires covered in plastic tubing? Also where should I look for this wiring? Leading up to the PDC?

Sorry I am not a huge car guy..

Philippe L.

I'd also start by replacing the fuse and get a spare one aswell. The first replacement will probably blow again, which tells you the issue does still exsist.
The original wires are covered in plastic but they might be rubbing against ... which may damage them.
Check the wiring starting from the fuse, just follow them and see where you end up.
If you have a multi-meter, you could measure between the beginning of the wire (at the ASD) and the chassis.
This may tell you a wire goes to ground directly, causing the fuse to blow.

xanderz

Ok. Will update later

Philippe L.

Goodluck. Don't be scared to brake something, cause the fuse is already blown...