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TJ
POWER DISTRIBUTION SYSTEMS
DESCRIPTION AND OPERATION
FUSEBLOCK MODULE . . . . . . . . . . . . . . . . . . . . 2
POWER DISTRIBUTION CENTER . . . . . . . . . . . . 1
POWER DISTRIBUTION SYSTEM . . . . . . . . . . . . 1
DESCRIPTION AND OPERATION
POWER DISTRIBUTION SYSTEM
DESCRIPTION
This group covers the various standard and
optional power distribution components used on this
model. Refer to Group 8W - Wiring Diagrams for
complete circuit diagrams of the various power distri-
bution components.
The power distribution system for this vehicle is
designed to provide safe, reliable, and centralized dis-
tribution of the electrical current required to operate
all of the many standard and optional factory-in-
stalled electrical and electronic powertrain, chassis,
safety, comfort and convenience systems. At the same
time, these systems were designed to provide conve-
nient to access centralized locations for conducting
diagnosis of faulty circuits, and for sourcing the addi-
tional 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:
• Fuses
• Maxi fuse-type fusible links
• Relays.
The power distribution system for this vehicle con-
sists of the following components:
• Power Distribution Center (PDC)
• Fuseblock Module
Following are general descriptions of the major
components in the power distribution system. See 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
DESCRIPTION
All of the electrical current distributed throughout
this vehicle is directed through the standard equip-
ment Power Distribution Center (PDC) (Fig. 1). The
POWER DISTRIBUTION SYSTEMS
CONTENTS
page
REMOVAL AND INSTALLATION
FUSEBLOCK MODULE . . . . . . . . . . . . . . . . . . . . 4
POWER DISTRIBUTION CENTER . . . . . . . . . . . . 2
molded plastic PDC housing is located on the right
side of the engine compartment, just forward of the
battery. The PDC housing has a molded plastic cover
that includes two integral pivot hooks on the out-
board side, and an integral latch on the inboard side.
The PDC cover is easily removed for service access
and has a convenient adhesive-backed fuse and relay
layout label affixed to the inside surface of the cover
to ensure proper component identification.
Fig. 1 Power Distribution Center
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 three
screws to the right front inner fender shield above
the right front wheel house. A separate cover that is
secured by an integral bail strap to the rear of the
PDC housing is unlatched and removed to access the
battery/generator cable connection stud. The PDC is
integral to the dash wire harness, which exits from
the rearward end of the PDC housing.
The PDC houses up to fourteen blade-type maxi
fuses, which replace all in-line fusible links. The PDC
also houses up to six blade-type mini fuses, the ABS
relay, and up to nine International Standards Orga-
nization (ISO) relays (three standard-type and six
8O - 1
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