designed to provide safe, reliable, centralized and
convenient access to 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:

• Mini and standard fuses

• Cartridge fuses

• Fusible links

• Automatic resetting circuit breakers

• Relays
The power distribution system for this vehicle con-

sists of the following components:

• Power Distribution Center (PDC)

• Junction Block (JB)

• Accessory power outlet.

8W-97 POWER DISTRIBUTION

8W - 97 - 1

CENTER CONSOLE POWER
OUTLET

REMOVAL

(1) Disconnect and isolate the battery negative

cable.

(2) Open the console lid (Fig. 1).

(3) Look inside and note position of the retaining

bosses (Fig. 2).

(4) Using external snap ring pliers with 90 degree

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

(5) Pull out the base through mounting ring by

gently rocking pliers.

(6) Disconnect the base wires.
(7) 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 the

center console.

(4) Connect the battery negative cable.

IOD FUSE

DESCRIPTION

All vehicles are equipped with an Ignition-Off

Draw (IOD) fuse that is disconnected within the
Junction Block (JB) when the vehicle is shipped from
the factory. Dealer personnel are to reconnect the
IOD fuse in the JB as part of the preparation proce-
dures performed just prior to new vehicle delivery.

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,
including the clock. The only reason the IOD fuse is
disconnected is to reduce the normal IOD of the vehi-
cle electrical system during new vehicle transporta-
tion and pre-delivery storage to reduce battery
depletion, while still allowing vehicle operation so
that the vehicle can be loaded, unloaded and moved
as needed by both vehicle transportation company
and dealer personnel.

The IOD fuse is disconnected from Junction Block

(JB) fuse cavity 5 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 desig-
nation becomes only another Fused B(+) circuit fuse.
The IOD fuse serves no useful purpose to the dealer
technician in the service or diagnosis of any vehicle

Fig. 1 POWER OUTLET

1 - POWER OUTLET
2 - CENTER CONSOLE

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

system or condition, other than the same purpose as
that of any other standard circuit protection device.

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

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. Remov-
ing and installing the IOD fuse again with the igni-
tion switch in the Off position will usually correct
the scrambled radio display condition.

(1) Turn the ignition switch to the Off position.
(2) Remove the cover from the left end cap of the

instrument panel.

(3) Pull on IOD fuse holder until it reaches the 1st

detent.

INSTALLATION

(1) Push on IOD fuse until completely seated.
(2) Install the cover to instrument panel end cap.

JUNCTION BLOCK

DESCRIPTION

An electrical Junction Block (JB) is located in the

left end cap of the instrument panel. The JB com-
bines the functions previously provided by a separate
fuse block module and relay center. It also serves to
simplify and centralize numerous electrical compo-
nents, as well as to distribute electrical current to
many of the accessory systems in the vehicle. It elim-
inates 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 (Fig. 3). It is secured
by three screws. The JB is concealed behind the left
instrument panel endcap. The left instrument panel
endcap is a snap-fit fuse access cover that conceals
the JB fuses and includes the fuse layout to ensure

proper fuse identification. 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) mini
relays, and ISO micro-relays. Internal connection of
all the JB circuits is accomplished by an intricate
network of bus bars. Refer to the appropriate wiring
information. The wiring information includes wiring
diagrams, proper wire and connector repair proce-
dures, 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 and relays are available

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.

Fig. 3 JUNCTION BLOCK LOCATION

1 - JUNCTION BLOCK

8W-97 POWER DISTRIBUTION

8W - 97 - 3

IOD FUSE (Continued)

REMOVAL

WARNING:
ON VEHICLES EQUIPPED WITH AIRBAGS, REFER
TO ELECTRICAL/RESTRAINTS BEFORE ATTEMPT-
ING ANY STEERING WHEEL, STEERING COLUMN,
OR 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 (JB) and Body Control Module

(BCM) are attached to each other. After removal they
can be separated. Junction Block and Body Control
Module assemblies are located on the driver’s side of
the vehicle (Fig. 4).

(1) Disconnect and isolate the battery negative

remote cable from the remote terminal on the left
shock tower.

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

cap.

(3) Remove center bezel.
(4) Remove instrument cluster hood.
(5) Remove silencer.
(6) Remove wire harness connectors from Junction

Block.

(7) Remove Junction Block three mounting screws.
(8) Disconnect BCM wire connectors and remove

the assembly.

(9) Remove Junction Block/BCM from vehicle.

(10) With the Junction Block/BCM removed from

the vehicle, separate the BCM from the Junction
Block.

(11) Remove the BCM attaching screws.
(12)

Disconnect BCM from the Junction Block.

INSTALLATION

(1) Connect BCM to the Junction Block.
(2) Install the BCM to the Junction Block and

install the attaching screws.

(3) Install Junction Block/BCM to vehicle.
(4) Connect BCM wire connectors.
(5) Install Junction Block mounting screws.
(6) Connect wire harness connectors to Junction

Block.

(7) Install silencer.
(8) Install instrument cluster hood.
(9) Install center bezel.
(10) Install end cap.
(11) Connect battery negative cable.

POWER DISTRIBUTION
CENTER

DESCRIPTION

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. The PDC housing has a
molded plastic cover that is retained by two latches.

A small red molded plastic protective cover on the

top near the front of the PDC is unsnapped to access
the battery/generator cable input connection stud. All
of the PDC outputs are through the integral head-
lamp/dash wire harness, which exits from the rear of
the PDC housing.

OPERATION

The PDC houses up to fourteen cartridge fuses,

which replace all in-line fusible links. The PDC also
houses up to eleven blade-type fuses, up to four full
International Standards Organization (ISO) mini
relays, and up to eight ISO micro-relays. Internal
connection of all the PDC circuits is accomplished by
an intricate network of hard wiring and a bus bar.

The fusible link, fuse cartridges, fuses and relays

are available for service replacement. The PDC unit
cannot be repaired and is only serviced as a unit
with the wire harness. If the PDC is faulty or dam-
aged, the wire harness assembly must be replaced.

REMOVAL

The Power Distribution Center (PDC) is serviced

as a unit with the headlamp/dash wire harness. If

Fig. 4 JUNCTION BLOCK/BCM

1 - JUNCTION/BCM

8W - 97 - 4

8W-97 POWER DISTRIBUTION

JUNCTION BLOCK (Continued)

Content .. 471 472 473 474 ..