POWER DISTRIBUTION SYSTEMS
TABLE OF CONTENTS
page page
DESCRIPTION AND OPERATION
POWER DISTRIBUTION SYSTEM.............1
POWER DISTRIBUTION CENTER (PDC).......1
FUSE BLOCK.............................2REMOVAL AND INSTALLATION
FUSE BLOCK.............................2
POWER DISTRIBUTION CENTER (PDC).......2
DESCRIPTION AND OPERATION
POWER DISTRIBUTION SYSTEM
This group covers the various standard and
optional power distribution components used on this
model. Refer to the Component Index of Group 8W -
Wiring Diagrams for complete circuit diagrams of the
various power distribution components.
The power distribution system for this vehicle is
designed to provide safe, reliable, centralized and
convenient to access distribution of the electrical cur-
rent required to operate all of the many standard
and optional factory-installed electrical and electronic
powertrain, chassis, safety, comfort and convenience
systems. At the same time, these systems were
designed to provide centralized locations for conduct-
ing diagnosis of faulty circuits, and for sourcing the
additional current requirements of many aftermarket
vehicle accessory and convenience items.
These power distribution systems also incorporate
various types of circuit control and protection fea-
tures, including:
²Fuses
²Fuse cartridges
²Fusible links
²Automatic resetting circuit breakers
²Relays
²Flashers
²Timers
²Circuit splice blocks.
The power distribution system for this vehicle con-
sists of the following components:
²Power Distribution Center (PDC)
²Fuse Block
Following are general descriptions of the major
components in the power distribution system. Refer
to the owner's manual in the vehicle glove box for
more information on the features, use and operation
of all of the power distribution system components.
POWER DISTRIBUTION CENTER (PDC)
All of the electrical current distributed throughout
this vehicle is directed through the standard equip-ment Power Distribution Center (PDC). The molded
plastic PDC housing is located in the left front corner
of the engine compartment, just behind the air
cleaner housing and left of the battery (Fig. 1). The
PDC housing has a molded plastic cover. The PDC
cover is easily removed for service access and has a
convenient fuse and relay layout label affixed to the
inside surface of the cover to ensure proper compo-
nent identification.
The PDC housing is secured to the left inner
fender well an indexing pin and one screw. All of the
PDC outputs are through the integral engine com-
partment wire harness.
All of the current from the generator cable connec-
tion goes to the battery through a 140 ampere fusible
link that is secured with a nut to the positive battery
cable terminal. The PDC houses up to ten six fuse
cartridges, which replace all in-line fusible links. The
PDC also houses up to twelve blade-type fuses, up to
three full International Standards Organization
(ISO) relays, and up to eight mini International
Standards Organization (ISO) relays. Internal con-
nection of all the PDC circuits is accomplished by an
intricate network of hard wiring and bus bars. Refer
toPower Distributionin the Component Index of
Group 8W - Wiring Diagrams for complete circuit
diagrams.
Fig. 1 Power Distribution Center (PDC) Location
PLPOWER DISTRIBUTION SYSTEMS 8O - 1
