Jeep Grand Cherokee WK. Manual — part 261
ANTENNA - QUARTER GLASS
DESCRIPTION
The integral radio antenna element is bonded to the
right rear quarter glass and is replaced with the glass
assembly only.
OPERATION
The integral antenna receives RF (Radio Frequencies) and sends them to the antenna module for amplification.
DIAGNOSIS AND TESTING
QUARTER GLASS ANTENNA
For complete circuit diagrams, refer to the appropriate wiring information.
To detect breaks in the integral antenna elements, perform the following procedure:
1. Disconnect the antenna module connector from the antenna.
2. Using an Ohmmeter, place one test lead on the left hand terminal. Place the other test lead on the end of the
conductor. Trace down the path to the end of the conductors. There should be continuity to each end of this
conductive trace.
3. Place one test lead on the right hand terminal. Place the other test lead on the end of the conductor. Trace down
the path to the end of the conductors. There should be continuity to each end of this conductive trace.
4. While keeping the Ohmmeter lead on the left hand terminal, place the other lead on the right hand terminal.
There should be an open circuit with no continuity between the terminals.
5. A break in the antenna grid can be repaired using a Mopar Rear Window Defogger Repair Kit or equivalent.
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ANTENNA-SATELLITE
DESCRIPTION
The satellite radio antenna is secured by a threaded
fastener and two retainers which protrude through a
hole in the roof panel. Two wires from the antenna are
connected to the satellite receiver module.
OPERATION
The satellite radio antenna receives signals from orbiting satellites and sends these signals to the satellite receiver
module. The satellite radio antenna must have open space in which to operate. Items carried on the roof, parking
inside etc. can have an effect on the antenna’s ability to receive signals.
REMOVAL
1. Disconnect and isolate the battery negative cable.
2. Lower the rear portion of the headliner as neces-
sary to access underside of antenna (1) (Refer to
23 - BODY/INTERIOR/HEADLINER - REMOVAL).
3. Disconnect the wire harness connectors from the
antenna.
4. Remove fastener and retainer.
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5. From inside the vehicle, and using a flat bladed
tool, depress one of the retaining tabs on the
antenna. Push up the one side of the antenna con-
nector through the roof panel. Depress the other
side of the connector and remove the antenna.
INSTALLATION
1. Insert wire harness through hole in roof panel.
Press antenna into position until both retainers
snap into place.
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2. Connect wire harness connectors to antenna.
3. Install and tighten retaining fastener.
4. Install headliner (Refer to 23 - BODY/INTERIOR/
HEADLINER - INSTALLATION).
5. Connect battery negative cable.
MODULE - ANTENNA
DESCRIPTION
The antenna module is an electromagnetic circuit
component designed to capture and enhance RF
(Radio Frequency) signals in both the AM and FM
broadcast bands. The antenna module is mounted to
the right rear roof rail under the headliner. The mount-
ing brackets also serve as the ground circuit. The
antenna module has a two wire electrical connector
that connects to the integral radio antenna, located on
the right rear quarter glass. A connector for the radio
coax cable and battery voltage are on the top of the
antenna module.
OPERATION
The antenna module receives both AM and FM radio signals supplied by the side window integral radio antenna
system and selectively amplifies them while at the same time avoiding unusable or unwanted signals. The amplified
signal is then sent through the body length coax cable to the radio input.
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