This group covers the various standard and optional Power Distribution components used on this model. 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.

OPERATION

The power distribution system for this vehicle is designed to provide safe, reliable, centralized and convenient to
access distribution of the electrical current 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 sys-
tems were designed to provide centralized locations for conducting 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 features, including:

•

Fuses

•

Fuse cartridges

•

Fusible links

•

Automatic resetting circuit breakers

•

Relays

•

Flashers

•

Timers

•

Circuit splice blocks

The power distribution system for this vehicle consists of the following components:

•

Engine Fuse Block

•

Underhood Accessory Fuse Block

•

Illumination Control Module

•

Relay Control Module

Following are general descriptions of the major components in the power distribution system. Refer to the owner’s
manual for more information on the features, use and operation of all of the power distribution system components.

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ENGINE FUSE BLOCK

DESCRIPTION

All of the electrical current distributed throughout the vehicle is directed through the Engine Fuse Block. The Engine
Fuse Block houses three maxi-type bolt in fuses. The Engine Fuse Block is located in front of the control module
box, next to the windshield wiper solvent fill tube.

OPERATION

All of the current from the battery and the generator output enters the Engine Fuse Block through the cable and
eyelet that are secured with a nut to the Engine Fuse Block B(+) terminal stud located on one end of the Engine
Fuse Block housing. The Engine Fuse Block terminal stud cover is unlatched and opened or removed to access the
Fuses.

REMOVAL

1. Disconnect and isolate the negative battery cable.

2. Open the lid (1) of the engine fuse block.

3. Remove the nuts and the electrical leads to the

engine fuse block.

4. Close the lid to the engine fuse block.

5. Push the tab at the front of the engine fuse block

box and remove it from the vehicle.

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INSTALLATION

1. Install the engine fuse onto the studs.

2. Install the plate and the electrical lead to the

engine fuse block.

3. Connect the negative battery cable.

4. Close the lid (1) to the engine fuse block.

5. Close the hood.

RELAY CONTROL MODULE

DESCRIPTION

The Relay Control Module controls many of the vehicle relays. The Relay Control Module is located inside the con-
trol module box. The Relay Control Module can not be serviced and it must be replaced as a unit.

OPERATION

The Relay Control Module is a solid state device containing the following internal relays.

•

Air Pump Relay

•

Engine Control Relay

•

Traction System Relay

•

Horn Relay

•

Fuel Pump Relay

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REMOVAL

1. Disconnect and isolate the negative battery cable.

2. Open the lid to the control module box.

3. Move the wires away to the side of the box to access the clip (1) that holds the relay control module in the

control module box.

4. Push the clip (1) back away from the relay control module and lift the relay control module out of the control

module box.

5. Remove all of the relay harness connectors from the relay control module.

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