this vehicle (except for police package wiring used with
rear fuse block) 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 in front of the coolant res-
ervoir bottle. 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 component identification. The PDC housing is
secured in the engine compartment by one screw to the
rear of the PDC and two clips on the front side. A small
molded plastic protective cover on the front right side of
the engine compartment is unsnapped to access the bat-
tery/generator cable input connection studs.

Included in the police package is an additional rear

fuse block and remote rear power post.

The rear fuse block is located in the right corner of

the trunk behind the trunk trim panel. The rear fuse
block houses 2 relays and three fuses. The wiring is
routed to an area just below the instrument panel in
a six cavity connector to provide three fused ignition
feeds. Three fused battery feeds in the PDC also are
provided to the center stack area of the instrument
panel within the same six cavity connector.

Only the police package has both fused ignition

and battery circuits below the instrument panel. Spe-
cial service vehicles have only the three fused battery
circuits in the six cavity connector.

The remote rear power post is located in the right

corner of the trunk side panel.

CAUTION: DO NOT USE THE REMOTE REAR
POWER POST AS A REMOTE JUMP POST. SERI-
OUS DAMAGE CAN OCCUR. REFER TO LUBRICA-
TION AND MAINTENANCE, JUMP STARTING FOR
PROPER JUMP STARTING PROCEDURES.

The rear fuse block and the remote power post are

serviced as part of the body harness.

OPERATION

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:

• Fuses

• Fuse cartridges

• Fusible links

• Automatic resetting circuit breakers

• Relays

• Flashers

• Timers

• Circuit splice blocks.
The power distribution system for this vehicle con-

sists of the following components:

• Power Distribution Center (PDC)

8W-97 POWER DISTRIBUTION

8W - 97 - 1

• Junction Block (JB)

• Accessory power outlet.

NOTE: DO NOT ATTEMPT TO SWAP POWER DIS-
TRIBUTION CENTERS (PDC) FROM ONE VEHICLE
TO ANOTHER. MOST OF THESE ASSEMBLIES ARE
VEHICLE FEATURE SPECIFIC AND THEREFORE
NOT INTERCHANGEABLE. ALWAYS USE THE COR-
RECT PART NUMBERED ASSEMBLY WHEN DIAG-
NOSING OR REPLACING A PDC.

STANDARD PROCEDURE - CIGAR LIGHTER/
POWER OUTLET CUSTOMER PREFERENCE

This vehicle was delivered with the Cigar Lighter/

Power Outlet activated only when the ignition is ON.
To convert the lighter/outlet to operate with the igni-
tion OFF, perform the following:

• Remove the left instrument panel end cap from

the left end of the instrument panel.

• Remove fuse #6 in the upper right of the junc-

tion block (Fig. 1) from its “IGN” position.

• Move the fuse slightly right and insert it in the

fuse #6 “BAT” location in the junction block.

• Reinstall the left instrument panel end cap.

CAUTION:

•

Many accessories that can be plugged in draw

power from the vehicle’s battery, even when not in
use (i.e. cellular phones, etc.). Eventually, if plugged
in long enough, the vehicle’s battery will discharge
sufficiently to degrade battery life and/or prevent
engine starting.

•

Accessories that draw higher power (i.e. cool-

ers, vacuum cleaners, lights, etc.), will degrade the
battery even more quickly. Only use these intermit-
tently and with greater caution.

•

After the use of high power draw accessories,

or long periods of the vehicle not being started
(with accessories still plugged in), the vehicle must
be driven a sufficient length of time to allow the
generator to recharge the vehicle’s battery.

CIGAR LIGHTER/POWER
OUTLET

DESCRIPTION

The power feed to the Cigar Lighter/Power Outlet

can be HOT (12v - B+) with the ignition ON, or HOT
(12v - B+) with the ignition OFF.

OPERATION

To change the operating mode of the Cigar Lighter/

Power Outlet, (Refer to 8 - ELECTRICAL/POWER
DISTRIBUTION - STANDARD PROCEDURE).

REMOVAL

(1) Open hood and disconnect the negative battery

cable remote terminal from the remote battery post.

(2) Look inside and note position of the retaining

bosses (Fig. 2).

Fig. 1 Cigar Lighter/Power Outlet Customer

Preference Fuse Location

1 - FUSE #6

Fig. 2 Cigar Lighter / Power Outlet Base Removal

1 - RETAINING BOSSES-ENGAGE PLIERS HERE
2 - PARTIALLY REMOVED
3 - EXTERNAL SNAP-RING PLIERS
4 - PULL BASE OUT-THROUGH MOUNTING RING

8W - 97 - 2

8W-97 POWER DISTRIBUTION

POWER DISTRIBUTION (Continued)

(3) Using external snap ring pliers with 90 degree

tips. Insert pliers with tips against bosses and
squeeze forcing bosses out of base.

(4) Pull out the base through mounting ring by

gently rocking pliers. A tool can be made to do the
same. Refer to (Fig. 3).

(5) Disconnect the base wires.
(6) Set base aside and remove base mount ring.

INSTALLATION

(1) Install base mount ring.
(2) Connect the base wires.
(3) Firmly snap base into position inside of instru-

ment panel.

(4) Connect the negative battery cable remote ter-

minal to the remote battery post.

IOD FUSE

DESCRIPTION

All vehicles are equipped with an Ignition-Off

Draw (IOD) fuse that is disconnected within the
Junction Block when the vehicle is shipped from the
factory. Dealer personnel are to reconnect the IOD
fuse in the junction block as part of the preparation
procedures performed just prior to new vehicle deliv-
ery.

The left end of the instrument panel cover has a

snap-fit fuse access panel that can be removed to pro-
vide service access to the fuses in the junction block.
An adhesive-backed fuse layout map is secured to the
instrument panel side of the access panel to ensure
proper fuse identification. The IOD fuse is a 15
ampere mini blade-type fuse, located in fuse cavity #
19.

CIRCUITS INCLUDED WITH IOD FUSE

• Cluster

• Body Control Module

• Diagnostic Connector

• Map Lamps

• Glove Box Lamp

• Courtesy Lamps

• Compass Mini-Trip Computer

• Radio

OPERATION

The term ignition-off draw identifies a normal con-

dition where power is being drained from the battery
with the ignition switch in the Off position. The IOD
fuse feeds the memory and sleep mode functions for
some of the electronic modules in the vehicle as well
as various other accessories that require battery cur-
rent when the ignition switch is in the Off position.
The only reason the IOD fuse is disconnected is to
reduce the normal IOD of the vehicle electrical sys-
tem during new vehicle transportation and pre-deliv-
ery storage to reduce battery depletion, while still
allowing vehicle operation so that the vehicle can be
loaded, unloaded and moved as needed by both vehi-
cle transportation company and dealer personnel.

The IOD fuse is disconnected from JB fuse cavity

#19 when the vehicle is shipped from the assembly
plant. Dealer personnel must reconnect the IOD fuse
when the vehicle is being prepared for delivery in
order to restore full electrical system operation. Once
the vehicle is prepared for delivery, the IOD function
of this fuse becomes transparent and the fuse that
has been assigned the IOD designation becomes only
another Fused B(+) circuit fuse.

The IOD fuse can be used by the vehicle owner as

a convenient means of reducing battery depletion
when a vehicle is to be stored for periods not to
exceed about thirty days. However, it must be
remembered that disconnecting the IOD fuse will not
eliminate IOD, but only reduce this normal condition.
If a vehicle will be stored for more than about thirty
days, the battery negative cable should be discon-
nected to eliminate normal IOD; and, the battery
should be tested and recharged at regular intervals
during the vehicle storage period to prevent the bat-
tery from becoming discharged or damaged.

REMOVAL

The Ignition-Off Draw (IOD) fuse is disconnected

from Junction Block fuse cavity # 19 when the vehi-
cle is shipped from the assembly plant. Dealer per-
sonnel must reconnect the IOD fuse when the vehicle
is being prepared for delivery in order to restore full
electrical system operation.

(1) Turn the ignition switch to the Off position.

Fig. 3 Tool For Cigar Lighter / Power Outlet

Removal

1 - 2.5MM (3/32 INS.)
2 - WELD
3 - 100MM (4 INS.)
4 - 22.25 TO 22.45MM (7/8 TO 57/64 INS.)

8W-97 POWER DISTRIBUTION

8W - 97 - 3

CIGAR LIGHTER/POWER OUTLET (Continued)

(2) Remove the fuse access panel by unsnapping it

from the outboard end of the instrument panel.

(3) Grasp the outer tabs of the IOD fuse in cavity

# 19 of the Junction Block between the thumb and
forefinger and pull the unit firmly outward.

(4) Install the fuse access panel by snapping it

onto the outboard end of the instrument panel.

INSTALLATION

(1) Turn the ignition switch to the Off position.
(2) Press the IOD fuse into fuse cavity # 19 of the

junction block.

(3) Install the fuse access panel by snapping it

onto the left outboard end of the instrument panel.

JUNCTION BLOCK

DESCRIPTION

An electrical Junction Block (JB) is located in the

left endcap of the instrument panel (Fig. 4). The JB
combines the functions previously provided by a sep-
arate fuseblock module and relay center. It also
serves to simplify and centralize numerous electrical
components, as well as to distribute electrical current
to many of the accessory systems in the vehicle. It
eliminates the need for numerous splice connections
and serves in place of a bulkhead connector between
many of the engine compartment, instrument panel,
and body wire harnesses.

The JB is positioned on a mounting bracket up and

under the left instrument panel. It is secured by four
screws. The JB is concealed behind the left instru-
ment panel endcap. The left instrument panel endcap
is a snap-fit fuse access cover that conceals the JB
fuses. The left instrument panel endcap must be
removed to access components other than the fuses
in the JB.

OPERATION

All of the current entering and leaving the JB does

so through wire harnesses, which are connected to
the JB through integral connector receptacles molded
into the JB housing. The JB houses blade-type fuses,
blade-type automatic resetting circuit breakers, full
International Standards Organization (ISO) relays,
and ISO micro-relays. Internal connection of all the
JB circuits is accomplished by an intricate network of
hard wiring and bus bars. Refer to the appropriate
wiring information. The wiring information includes
wiring diagrams, proper wire and connector repair
procedures, details of wire harness routing and
retention, connector pin-out information and location
views for the various wire harness connectors, splices
and grounds.

The fuses, circuit breakers, relays, and are avail-

able for service replacement. The JB unit cannot be
repaired and is only serviced as an assembly. If any
internal circuit or the JB housing is faulty or dam-
aged, the entire Junction Block assembly must be
replaced.

REMOVAL

WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS,

REFER

ELECTRICAL,

RESTRAINTS

BEFORE ATTEMPTING ANY STEERING WHEEL,
STEERING

COLUMN,

INSTRUMENT

PANEL

COMPONENT DIAGNOSIS OR SERVICE. FAILURE
TO TAKE THE PROPER PRECAUTIONS COULD
RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT
AND POSSIBLE PERSONAL INJURY.

The Junction Block and Body Control Module

(BCM) are attached to each other. After removal,
they can be separated. The Junction Block/BCM
assemblies are located on the driver’s side of the
vehicle.

(1) Open hood and disconnect the negative battery

cable remote terminal from the remote battery post.

(2) Open the front driver’s door and remove left

end cap.

(3) Remove two screws from lower instrument

panel cover (outside end). Pull rearward on lower
instrument panel cover releasing clips. Disconnect
decklid release switch wiring, cable to hood release,
and remove cover from vehicle.

Fig. 4 Junction Block Location

1 - JUNCTION BLOCK/BCM

8W - 97 - 4

8W-97 POWER DISTRIBUTION

IOD FUSE (Continued)

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