Chrysler Town & Country/Voyager, Dodge Caravan, Plymouth Voyager. Manual — part 214
AUDIO SYSTEM
CONTENTS
page
page
MANUAL ANTENNAS
. . . . . . . . . . . . . . . . . . . . . 1
RADIOS
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
RELAY/CHOKE—INFINITY SPEAKERS
. . . . . . . . 4
SPEAKERS
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
RADIOS
CAUTION: Do not operate the radio with speaker
leads detached since damage to the transistors may
result.
For operation of the factory installed standard and
optional radios, refer to the Operating Instructions
Manual supplied with the vehicle.
All vehicles are equipped with an Ignition-Off Draw
Connector which, is used when the vehicles are origi-
nally shipped from the factory. This connector, which is
located near the battery, helps to prevent battery
discharge during storage. For specific connector type
and location, refer to Wiring Diagrams.
This connector is part of the radio memory circuitry
and should be checked if the memory of time or radio
station programming is inoperative.
INTERFERENCE ELIMINATION
Some components on the vehicle are equipped with a
radio capactor, to suppress radio frequency interfer-
ence (static).
Capacitors are mounted in various locations, on the
alternator (either internal or external), internal to the
instrument cluster, and internal to the windshield
wiper motor.
Ground straps are mounted from radio chassis to
cowl, engine to cowl, across engine mount on right
hand side. On vehicles with air conditioning there is a
strap from evaporator valve to cowl. These ground
straps should be securely tightened to assure good
metal to metal contact. Ground straps conduct very
small high frequency electrical signals to ground and
require clean large surface area contact.
Radio resistance type spark plug cables in the high
tension circuit of the ignition system complete the
interference suppression (Fig. 1).
If radio noises are evident, be sure the capacitor lead
wires are making good contact on their respective
terminals and are securely mounted. Faulty or deterio-
rated spark plug wires should be replaced.
TEST
Whenever a radio malfunction occurs, first verify
that the radio wire harness is properly connected to all
connectors before starting normal diagnosis and repair
procedures. Refer to Radio Diagnosis Chart (Fig. 2),
and/or Radio Connector Circuit Chart (Fig. 3).
REPLACEMENT
(1) Remove bezel by opening glove box and prying
behind the bezel (Fig. 4).
(2) Remove two screws that attach the radio to the
panel.
(3) Remove the ground strap screw.
(4) Remove the antenna plug.
(5) Remove the two wiring connectors.
(6) For installation reverse above procedures.
MANUAL ANTENNAS
TESTING
Antenna performance may be tested by substituting
a known good antenna. It is also possible to check short
or open circuits with an ohmmeter or continuity light
once the antenna cable is disconnected from the radio
as follows:
(1) Continuity should be present between the an-
tenna mast and radio end pin of antenna cable plug
(Fig. 5).
(2) No continuity should be observed between the
ground shell of the connector and radio end pin.
(3) Continuity should be observed between the
ground shell of the connector and the mounting hard-
ware on the vehicle fender.
REMOVAL
(1) Remove side cowl cover and disconnect antenna
cable by pulling apart.
Fig. 1 Resistance Type Spark Plug Cables
.
AUDIO SYSTEM
8F - 1
(2) Remove antenna mast by unscrewing mast from
antenna body (Fig. 6).
(3) Remove cap nut with Antenna Nut Wrench
C-4816 (Fig. 7).
(4) Remove antenna adapter (Fig. 7).
(5) From under fender remove antenna lead and
body assembly (Fig. 5).
INSTALLATION
(1) Install antenna body and cable from underneath
fender (Fig. 5).
(2) Install adapter and cap nut. Tighten cap nut to
14 N
Im (125 in. lbs.) with Antenna Nut Wench C-4816.
(3) Install antenna mast into antenna body until
sleeve bottoms on antenna body.
(4) Route cable through body hole, make sure the
grommet is seated to the body plug in cable to connec-
tor.
BENCH TEST FOR ANTENNA MALFUNCTION
It is also possible to check short or open circuits with
an ohmmeter or continuity light once the antenna has
been removed from the vehicle.
(1) Continuity should be present between the tip of
the mast and radio end pin (Fig. 8).
(2) No continuity should be observed between the
ground shell of the connector and radio end pin.
(3) Continuity should be observed between the
ground shell of the connector and the mounting hard-
ware.
Wiggle cable over its entire length to reveal
intermittent short or open circuits during steps
(1), (2) and (3).
SPEAKERS
CAUTION: Do not operate the radio with speaker
leads detached since damage to the transistors may
result.
FRONT SPEAKER REPLACEMENT
(1) Remove speaker grille by pushing forward until
the back edge is clear of the pad (Fig.9).
(2) Remove two screws that retain the speaker.
(3) Remove the speaker and disconnect the wiring
connector.
(3) For installation reverse above procedures.
FRONT DOOR SPEAKERS REPLACEMENT
(1) Remove speaker grille by prying at top with a flat
tool.
(2) Remove four speaker mounting screws. Pull
speaker forward and remove speaker wiring connector.
(3) For installation reverse above procedures.
Fig. 2 Radio Diagnosis
8F - 2
AUDIO SYSTEM
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Fig. 3 Radio Connector Circuit
.
AUDIO SYSTEM
8F - 3
REAR SPEAKERS REPLACEMENT
(1) Remove the speaker grille by prying from the
underside (Fig. 10).
(2) Remove four screws attaching speaker to door.
(3) Disconnect speaker wiring connector.
(4) For installation reverse above procedures.
RELAY/CHOKE—INFINITY SPEAKERS
No Bass, test across the connector for continuity. If
no continuity Replace Relay/Choke Assembly (Fig. 11).
The Relay/Choke is located under the left side of the
Instrument Panel on the Dimmer Module bracket.
Fig. 5 Radio Antenna Cable
Fig. 4 Radio and Bezel
Fig. 6 Antenna Mast Removal & Installation
8F - 4
AUDIO SYSTEM
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