Power Distribution Center Description And Operation; Ignition-Off Draw Fuse Description - Jeep 200 Cherokee Service Manual

8O - 2 POWER DISTRIBUTION SYSTEMS
DESCRIPTION AND OPERATION (Continued)
POWER DISTRIBUTION CENTER
DESCRIPTION
Fig. 1 Power Distribution Center Location
1 – LEFT FENDER
2 – BATTERY
3 – POWER DISTRIBUTION CENTER
All of the electrical current distributed throughout
this vehicle is directed through the standard equip-
ment Power Distribution Center (PDC) (Fig. 1). The
molded plastic PDC housing is located on the right
side of the engine compartment, just behind the bat-
tery. The PDC houses up to fourteen blade-type maxi
fuses, which replace all in-line fusible links. The PDC
also houses up to twelve blade-type mini fuses, and
up to eight International Standards Organization
(ISO) relays (four standard-type and four micro-type).
The PDC housing is secured to a stamped sheet
metal bracket in the engine compartment by mount-
ing slots and tabs that are integral to the PDC hous-
ing. The PDC mounting bracket is secured with two
screws to the right front inner fender shield above
the right front wheel house. The PDC housing has a
molded plastic cover that includes two integral hinge
tabs on the inboard side, and an integral latch on the
outboard side. The PDC cover is easily opened or
removed for service access and has a convenient fuse
and relay layout map integral to the inside surface of
the cover to ensure proper component identification.
A separate molded plastic B(+) terminal stud cover is
secured by two integral tabs and a latch to one end
of the PDC housing.
The PDC cover, the PDC housing lower cover, the
PDC B(+) terminal stud cover, the PDC relay wedges
and the PDC relay cassettes are available for service
replacement. The PDC main housing unit, the fuse
wedges, the fuse cassette and the bus bars cannot be
repaired and are only serviced as a unit with the
headlamp and dash wire harness. If the PDC main
housing unit, fuse wedges, fuse cassette or the bus
bars are faulty or damaged, the headlamp and dash
wire harness unit must be replaced.
OPERATION
All of the current from the battery and the gener-
ator output enters the PDC through two cables and
eyelets that are secured with a nut to the PDC B(+)
terminal stud located on one end of the PDC housing.
The PDC B(+) terminal stud cover is unlatched and
removed to access the battery and generator output
connection B(+) terminal stud. The PDC cover is
unlatched and opened or removed to access the fuses
or relays. Internal connection of all of the PDC cir-
cuits is accomplished by an intricate combination of
hard wiring and bus bars. Refer to Power Distribu-
tion in the index of this service manual for the loca-
tion of complete PDC circuit diagrams.
IGNITION-OFF DRAW FUSE
DESCRIPTION
Fig. 2 Ignition-Off Draw Fuse
1 – POWER DISTRIBUTION CENTER
2 – IGNITION-OFF DRAW FUSE
All vehicles are equipped with an Ignition-Off
Draw (IOD) fuse (Fig. 2) that is removed from its
cavity in the Power Distribution Center (PDC) when
the vehicle is shipped from the factory. Dealer per-
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