Power Distribution: Overview Dodge Dart PF

DESCRIPTION

Underhood Power Distribution Center (uPDC)

1. The underhood power distribution center contains the fuses and relays for circuits contained in the wire harness. The PDC is supplied power from the battery by a direct, non-fused connection. The PDC is located on the driver side of the engine compartment next to the battery. Depending on application, the vehicle may be equipped with an auxiliary PDC (auxPDC) mounted next to the PDC under the cover. The auxPDC is currently used for the after run pump.

Interior Power Distribution Center (iPDC)

1. The interior PDC (iPDC) or Junction block contains the fuses for many of the interior electrical and electronic devices. The iPDC is located on the right side of the BCM, mounted too the BCM retainer bracket. Please note that the BCM also contains several fuses.

For fuse description and layout, refer to FUSE LOCATIONS AND TYPES, SPECIFICATIONS .

The PDC's are an integral part of the body harness and are serviced as an assembly with the relative body harness .

Prefuse Assembly

The prefuse assembly is a high-current connection point for the vehicle's electrical system that attaches directly to the battery positive post. The prefuse also contains three high-current fuses to protect the electric power steering system, alternator, and the radiator fan. The assembly contains three large fuses

Scheme 4

1. A 200-ampere fuse (1) routed to the generator output terminal. The generator charges the battery using this circuit.
2. A 70-ampere fuse (3) providing power to the electric power steering (EPS) unit.
3. A 60-ampere fuse (4) providing power to the radiator fan module.
4. A Starter connection/Jump start point (2)

Note. The terminal also has a non-fused connection to the starter motor assembly.

CAUTION: Do not attach battery jumper cables in a manner that would cause the jumped current to pass through the bolt-on fuses. Very high current may cause the fuses to open, or damage the circuit or component. The vehicle should only be jump started at the designated jump start post.

OPERATION

The power distribution system for this vehicle is designed to provide safe, reliable, centralized and convenient access to 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 systems 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

1. Automatic resetting circuit breakers
2. Cartridge fuses
3. Fusible links
4. Mini and standard fuses
5. Relays

The power distribution system for this vehicle may consist of the following components

1. Accessory power outlet
2. Junction Block (JB)
3. Underhood Power Distribution Center (uPDC)
4. Interior Power Distribution Center (iPDC)

Scheme 5

Scheme 6

Scheme 7

1. Insert (special tool #C-4755, Trim Stick) (2) into the Power Distribution Center (PDC) cover (1) release latch.
2. Rotate the special tool backwards to loosen the latch on the PDC cover.
3. Lift up on the PDC cover tab (3) and rotate the cover back in order to remove the cover from the PDC

The Power Distribution Center (PDC) is serviced as a unit with the body wire harness. If any internal circuit of the PDC or the PDC housing is faulty or damaged, the entire PDC and body wire harness unit must be replaced.

For complete circuit diagrams, refer to SYSTEM WIRING DIAGRAMS . The wiring information includes wiring diagrams, proper wire and connector repair procedures, further details on wire harness routing and retention, as well as pin-out and location views for the various wire harness connectors, splices and grounds.

1. Disconnect and isolate the battery negative cable.
2. Disconnect each of the engine compartment wire harness connectors.
3. Remove the fasteners that secure each of the engine compartment wire harness ground eyelets to the vehicle body and chassis components.
4. Disengage each of the retainers that secure the engine compartment wire harness to the vehicle body and chassis components.
5. Disengage the PDC housing.
6. Remove remaining wire harness connectors to body harness.
7. Remove the PDC and the wire harness as a unit.

1. Align the back of the PDC cover with the back of the PDC housing by seating the cover tabs proper position.
2. Once aligned, seat the PDC cover by lowering the front of the PDC cover to the PDC housing and snap into place.

Scheme 8

The Power Distribution Center (PDC) is serviced as a unit with the body wire harness. If any internal circuit of the PDC or the PDC housing is faulty or damaged, the entire PDC and body wire harness unit must be replaced.

Note. If the power distribution center (PDC) is being replaced with a new unit, be certain to transfer each of the fuses and relays from the old PDC to the proper cavities of the new PDC.

For complete circuit diagrams, refer to SYSTEM WIRING DIAGRAMS . The wiring information includes wiring diagrams, proper wire and connector repair procedures, further details on wire harness routing and retention, as well as pin-out and location views for the various wire harness connectors, splices and grounds.

1. Position the PDC in position in the engine compartment.
2. Route the engine compartment wire harness from the PDC through the engine compartment, engaging each of the harness retainers to the mounting provisions in the vehicle body and chassis components.
3. Install and tighten the fasteners that secure each of the body wire harness ground eyelets to the vehicle body and chassis components.
4. Reconnect each of the engine compartment wire harness connectors.
5. Torque nut retaining positive battery cable at PDC to 96 - 141 N•m (85 - 130 in. lbs.).
6. Reconnect the battery negative remote cable.

The PF is equipped with two 12-volt electrical outlets. The outlets are located in the following locations

1. Inside the center console.
2. The ash receiver in the CHIN bezel.

The outlet in the console has power at all times, and includes a tethered cover. The outlet in the ash receiver tray is shipped with power available only when the ignition is in the ON position. This outlet can be changed to provide power at all times by moving a fuse in the fuse block.