15 amp IOD fuse was replaced 2 months ago and now blew again and cluster panel and radio out again...replaced fuse but as soon as I start engine it blows again
Wow , no jeep stated, so i cant look it up for you....
the fuse blows due to a SHORT circuit. (preventing a fire)
which JEEP? exactly,some eeps have many IOD fuses, mine has 6.
this fuse is the memory fuse for the various. controllers.
ECU/PCM, BCM, cluster, Radio, NAV, CLOCK, the overhead module option , lamps dome, cluster brain, compass option and others. etc.
post the exact fuse. blown, (where and exact location)
what can be done is unplug all things off that fuse 1 by 1 to find the Module or wire that is shorted.
the system looks like a tree, and we find which branch is shorted.
then what twig,then which leaf.
see>? i use and ammeter to find all shorts after doing the disconnect trick above.
for example the XJ 1999 Cherokee (tossed coin for you)
The PDC box has 1 OID fuse. 15amps, (not 5)
cavity 16
in the FSM note this warning.
NOTE: When removing or installing the IOD fuse, it
is important that the ignition switch be in the Off
position. Failure to place the ignition switch in the
Off position can cause the radio display to become
scrambled when the IOD fuse is installed. (not damaged)
Ignition Off Draw fuse, (aka memory fuse)
id unplug the radio first.
as this gets hacked #1 on cars,
someone hack in , remote starts or aftermarket alarms in car?
this wire IOD is called i the extensive schematics.
M1 20 PK
it even goes to dome lights and such.
radio pin C1-pin12.
even the under hood lamp on the Diesel version
to find all places it goes to, see the FSM book and search wire S135.
if after pulling all loads. its still shorted, then the harness is shorted.
finding that?, takes are ammeter, and methods.
Have an auto electrician check it over for a short or overload,could be any of a number of things . the systems that become active with the turning of the key may be the source of the problem. could be a short in the wiringgbehind the instrument binacle
SOURCE: Blowing Fuse
There are a few possibilities here. First, you may have high starting amps on the compressor. You mentioned the run capacitor being changed. I'm not sure if you have a start capacitor, but that should also be checked. If you don't have a start capacitor, I would recommend having a hard start kit installed in the unit. It's basically a start capacitor with an internal relay to take it out of the circuit when the compressor is running, and wires up in parallel to the run capacitor. Also, check all of your line voltage wiring. Make sure all the wiring connections are tight (wire nuts, screw terminals, etc.), and that there's no issue with wiring insulation rubbing off from vibration, etc. Finally, check the points on the compressor contactor. If the contacts are black and pitting, it causes arcing, which means excessive amp draw through the contactor.
SOURCE: how to change the radio fuse on a 2001 honda accord
look under the cover.. white label should say radio back up 15 amp
SOURCE: 99 dodge neon # 10 fuse ing feed 15 amp blows out
There's a short in the circut. Check continuity of the wires that feed from that fuse (you'll need a wiring diagram to identify each wire). You've got something that is causing too much amperage to move through the circut and the fuse blows. Make sure the amperage on the fuse is correct for the application (your owner's manual or fuse box diagram should tell you what amperage rating to install in each fuse slot).
SOURCE: blows fuses
SOUNDS LIKE THE ALARM HORN IS SHORTED, CAUSING FUSE TO BLOW.
TRY UNPLUGGING ALARM HORN & SEE IF FUSE STILL BLOWS.
IF IT DOES NOT BLOW, REPLACE ALARM HORN.
SOURCE: 98 grand cherokee asd relay blowing fuse
The fuse it doing it's job, you have a short ( Wire that is connected to a ground, that draws too much power )
If you have an electrical schematic ( Repair manual ) find out which wires are connected to that fuse and check them for any chaffing, cuts, unnesassary twists, or corrosion.
If you have a ohm-meter, isolate the system ( by disconnecting the fuse, and other connections. Then check for any resistance on wires that should not be connected ( because you disconnected them ) by having one Lead on the wire's connector and the other meter-lead on your car's frame. A good wire will not have continuity if it is isolated.
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