Grand Cherokee 2WD V8-4.7L VIN J (2004)
3. From the bottom of the PDC housing, align and insert the replacement relay cassette into the PDC. Press the relay cassette up into the PDC until
both of the latches are fully engaged.
CAUTION: Proper care must be taken to be certain that the wiring and terminals from the faulty PDC relay cassette are installed in the correct
terminal cavities of the replacement relay cassette. To prevent mistakes it is recommended that the wiring and terminals be removed from the
faulty relay cassette one cavity at a time, repaired or spliced as necessary, then installed securely into the correct cavity of the replacement relay
cassette. If you are not absolutely certain into which cavity a terminal should be installed, refer to Power Distribution in the index of this service
manual for the location of complete circuit diagrams covering the PDC.
PDC Relay Cassette Terminal Remove/install
4. While pulling gently on the wire from the bottom of the faulty PDC relay cassette, use a terminal pick tool (Special Tool Kit 6680) from the top of
the relay cassette to release the latch that secures the terminal in the relay cassette terminal cavity.
5. From the bottom of the faulty PDC relay cassette, remove the wire and terminal from the relay cassette terminal cavity.
6. Make all necessary repairs and splices to the wire for the removed terminal. Refer to Wiring Repair in Wiring Diagrams for the location of the
wiring repair procedures.
7. From the bottom of the PDC housing, align and insert the removed wire and terminal into the correct terminal cavity of the replacement relay
cassette. Push the wire and terminal up into the relay cassette terminal cavity until it is fully engaged by the latch.
8. Repeat Step 4, Step 5, Step 6 and Step 7 one wire and terminal at a time until each of the wires and terminals have been transferred from the faulty
PDC relay cassette into the replacement relay cassette.
9. Install the PDC relay wedge into the replacement PDC relay cassette.
PDC Relay Wedge
REMOVAL
The Power Distribution Center (PDC) cover, the PDC housing lower cover, the PDC relay wedges, the PDC relay cassettes and the PDC B(+) terminal
stud module are available for service replacement. The PDC cover can be simply unlatched and removed from the PDC housing without the PDC being
removed or disassembled. Service of the remaining PDC components requires that the PDC be removed from its mounting and disassembled. Refer to
Wiring Repair in Wiring Diagrams for the location of the wiring repair procedures.
1. Remove the PDC housing lower cover.
2. Remove each of the relays from the PDC relay wedge to be removed.
3. From the bottom of the PDC housing, use a small screwdriver or a terminal pick tool (Special Tool Kit 6680) to release the two latches (yellow)
that secure the relay wedge to the PDC relay cassette.
INSTALLATION
1. From the top of the PDC housing, align and insert the PDC relay wedge latch arms into the correct cavities in the relay cassette.
2. Gently and evenly press the PDC relay wedge down into the relay cassette until both of the latches are fully engaged.
3. Install each of the removed relays into the proper cavities of the PDC relay wedge.
4. Install the PDC housing lower cover.
