Power Distribution Jeep Grand Cherokee WK2

DESCRIPTION

This group covers the various standard and optional power distribution components used on this model. The power distribution system for this vehicle consists of the following components

1. Totally Integrated Power Module (TIPM)
2. Junction Block (JB)
3. 12 Volt Power Outlets
4. Power Inverter Module
5. 115 Volt Power Outlet

The power distribution system also incorporates various types of circuit control and protection features, including

1. Automatic resetting circuit breakers
2. Blade-type fuses
3. Cartridge fuses
4. Fusible links
5. Standard and Micro-Relays

Following are general descriptions of the major components in the power distribution system. Refer to the owner's manual in the vehicle glove box for more information on the features and use of all of the power distribution system components. Refer to Wiring Diagrams for complete circuit diagrams.

For specific fuse location and types, refer to FUSE LOCATIONS AND TYPES , SPECIFICATIONS .

OPERATION

The power distribution system for this vehicle is designed to provide safe, reliable, and centralized distribution points for the electrical current required to operate all of the standard and optional factory-installed electrical and electronic powertrain, chassis, safety, security, comfort and convenience systems. At the same time, the power distribution system was designed to provide ready access to these electrical distribution points for the vehicle technician to use when conducting diagnosis and repair of faulty circuits. The power distribution system can also prove useful for the sourcing of additional electrical circuits that may be required to provide the electrical current needed to operate accessories that the vehicle owner may choose to have installed in the aftermarket.

All vehicles are equipped with an Ignition-Off Draw (IOD) fuse that is disconnected within the Integrated Power Module when the vehicle is shipped from the factory. Dealer personnel are to reconnect the IOD fuse in the Integrated Power Module as part of the preparation procedures performed just prior to new vehicle delivery. The IOD fuse can be removed to avoid discharging the battery by disconnecting non-essential, low-current memory functions that are normally on at all times. A detent on the IOD fuse holder allows it to be stored in its normal cavity but out of contact. The holder is pushed into place to restore power to the systems it supplies. The following circuits are protected by the IOD fuse

1. Cluster (CCN)
2. Electronic Overhead Module (EOM
3. Sentry Key Remote Entry Module (SKREEM)
4. Video Module (DVD system)
5. Hands Free Telephone Module
6. Map Lamps
7. Glove Box Lamp
8. Courtesy Lamps
9. Radio
10. Security Module (export markets)
11. Traffic Control Module (export markets)

The term ignition-off draw identifies a normal condition 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 current when the ignition switch is in the Off position. The only reason the IOD fuse is disconnected is to reduce the normal IOD of the vehicle electrical system during new vehicle transportation 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.

The IOD fuse is disconnected from Integrated Power Module 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 designation becomes another Fused B(+) circuit fuse.

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 disconnected to eliminate normal IOD; and, the battery should be tested and recharged at regular intervals during the vehicle storage period to prevent the battery from becoming discharged or damaged.

Scheme 8

1. Disconnect and isolate the battery negative cable.
2. Remove the passenger side front seat. Refer to «SEAT, FRONT , REMOVAL»(/jeep/grand-cherokee/wk2-2010-2013/remont/gauges-instrument-panels/#body-interior-exterior) .
3. Remove the two retainers (2).
4. Disconnect the electrical connector (1).
5. Slide the power inverter module (3) out of the bracket.

INSTALLATION

1. Slide the power inverter module (3) into the bracket.
2. Connect the electrical connector (1).
3. Install the two retainers (2).
4. Install the passenger side front seat. Refer to «SEAT, FRONT , INSTALLATION»(/jeep/grand-cherokee/wk2-2010-2013/remont/gauges-instrument-panels/#body-interior-exterior) .
5. Connect the negative battery cable.

For more information, refer to MODULE, TOTALLY INTEGRATED POWER (TIPM) , DESCRIPTION .

This vehicle is equipped with three 12-volt electrical outlets. The outlets are located in the following locations

1. One outlet in the cargo area left quarter trim panel.
2. Two outlets in the instrument panel center stack under the heat/air conditioning controller.

The cargo area and center stack power outlets have power at all times, and include tethered covers. The cigar lighter outlet located in the center stack is on with the ignition switch in the Run/ACC position only.

Scheme 9

Scheme 10

1. Disconnect and isolate the battery negative cable.
2. Look inside and note position of the retaining bosses (2).
3. Insert Remover, Power Outlet (special tool #10246, Remover, Power Outlet) (1) into the retaining bosses (2) of the power outlet.
4. Pull out the base through the mounting ring by gently rocking the tool.
5. Disconnect the harness (1) from the power outlet (2).
6. Set the base aside and remove the base mount ring.

1. Connect the wire connector (1) to the power outlet receptacle (2).
2. Install the power outlet mount into the panel.
3. Align the splines on the outside of the power outlet receptacle base connector receptacle with the grooves on the inside of the mount.
4. Press firmly on the power outlet receptacle base until the retaining bosses of the mount are fully engaged in their receptacles.
5. Connect the battery negative cable.

Scheme 11

The 115 Volt AC outlet (3) is mounted in the rear of the center floor console (2). The vehicle is able to supply 115 Volt AC power through the use of a inverter module. The inverter module is located under the right rear seat cushion. The inverter converts the 12 Volt DC from the vehicle battery system to a 115 Volt AC output.

Scheme 12

The inverter module provides A/C power for user accessories when the 115 Volt AC outlet switch (4) in the instrument panel center stack is in the "ON" position. The outlet switch is part of the instrument panel upper switch pod assembly and is not available for service as an individual part. If the switch is damaged or inoperative the complete upper switch pod assembly must be replaced, for the appropriate procedure, refer to POD, SWITCH , REMOVAL .

The 115 volt AC power outlet switch receives 12 volts from the Integrated Power Module (IPM) and passes it as an enable signal to the inverter module. The inverter module also receives 12 volts via the IPM and inverts this to a 115 volt AC output. The enable signal received from the power outlet switch enables the inverter to convert the received voltage and pass it to the power outlet to power external devices.

INVERTER MODULE

For complete circuit diagrams, refer to the appropriate wiring information.

115 VOLT POWER OUTLET DIAGNOSIS

Scheme 13

Scheme 14

1. Disconnect and isolate the battery negative cable.
2. Using a trim stick remove the rear center console bezel.
3. Remove the retainers securing the duct work to the rear center console panel.
4. Disconnect the electrical connector (1) for the 115v power outlet (2).
5. Release the clips holding the 115v power outlet and push through the panel.

1. Insert the 115v outlet into the panel.
2. Connect the electrical connector (1) to the 115v power outlet (2).
3. Install the duct to the trim panel.
4. Install the rear console trim panel.
5. Connect the negative battery cable.

See also:
• FUSE LOCATIONS AND TYPES , SPECIFICATIONS
• SEAT, FRONT , REMOVAL
• MODULE, TOTALLY INTEGRATED POWER (TIPM) , DESCRIPTION
• POD, SWITCH , REMOVAL
• WARNING