Power and Ground Distribution: Service and Repair

Power Distribution Center Replacement

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

REMOVAL
1. Disconnect and isolate the battery negative cable.
2. Disconnect each of the headlamp and dash wire harness connectors.
3. Remove all of the fasteners that secure each of the headlamp and dash wire harness ground eyelets to the vehicle body and chassis components.
4. Disengage each of the retainers that secure the headlamp and dash wire harness to the vehicle body and chassis components.
5. Unlatch and remove the cover from the PDC.

Engine Wire Harness In-Line Connector:

6. Disconnect the engine wire harness in-line connector from the PDC connector receptacle.
7. Slide the engine wire harness retainer clip upward and disengage the harness from the trough on the rear of the PDC housing.

Battery Cable To PDC Connections:

8. Remove the nut that secures the eyelet of the battery negative cable take out to the rearward stud in the PDC and remove the eyelet from the stud.
9. Remove the nut that secures the eyelet of the battery positive cable take out to the forward stud in the PDC and remove the eyelet from the stud.

Power Distribution Center Remove/Install:

10. Remove the screw that secures the PDC to the left front fender wheel housing.
11. Disengage the latches for the two PDC mounts and lift the unit off of the battery tray stanchions.
12. Remove the PDC and the headlamp and dash wire harness from the engine compartment as a unit.

INSTALLATION

NOTE: If the PDC is being replaced with a new unit, be certain to transfer each of the blade-type fuses, cartridge fuses and relays from the old PDC to the proper cavities of the new PDC.

1. Position the PDC and the headlamp and dash wire harness unit in the engine compartment.
2. Install the two PDC mounts onto the two stanchions of the battery tray
3. Install and tighten the screw that secures the PDC to the left front fender wheel housing. Tighten the screw to 7.9 N.m (70 in. lbs.).
4. Install the eyelet of the battery positive cable take out onto the forward stud in the PDC.
5. Install and tighten the nut that secures the eyelet of the battery positive cable take out to the forward stud in the PDC. Tighten the nut to 8.4 N.m (75 in. lbs.).
6. Install the eyelet of the battery negative cable take out onto the rearward stud in the PDC.
7. Install and tighten the nut that secures the eyelet of the battery negative cable take out to the rearward stud in the PDC. Tighten the nut to 9 N.m (80 in. lbs.).
8. Engage the engine wire harness in the trough on the back of the PDC housing and secure it with the retainer clip.
9. Reconnect the engine wire harness in-line connector to the PDC connector receptacle.
10. Install the cover onto the PDC.
11. Engage each of the retainers that secure the headlamp and dash wire harness to the vehicle body and chassis components.
12. Install all of the fasteners that secure each of the headlamp and dash wire harness ground eyelets to the vehicle body and chassis components.
13. Reconnect each of the headlamp and dash wire harness connectors.
14. Reconnect the battery negative cable.