1996 CHRYSLER VOYAGER Service Manual

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Page 401 of 1938

CHRYSLER VOYAGER 1996 Service Manual INSTALLATION
For installation, reverse the above procedures.
RADIO BEZEL AND HVAC CONTROL
REMOVAL
(1) Remove screw access cover (Fig. 48).
(2) Remove the attaching screws holding bottom of
the bezel t

Page 402 of 1938

Page 403 of 1938

CHRYSLER VOYAGER 1996 Service Manual AUDIO SYSTEMS
CONTENTS
page page
GENERAL INFORMATION
INTRODUCTION......................... 1
DESCRIPTION AND OPERATION
ANTENNA.............................. 1
CHOKEÐINFINITY SPEAKERS.............. 2

AUDIO SYSTEMS
CONTENTS
page page
GENERAL INFORMATION
INTRODUCTION......................... 1
DESCRIPTION AND OPERATION
ANTENNA.............................. 1
CHOKEÐINFINITY SPEAKERS.............. 2
INTERFERENCE ELIMINATION.............. 1
NAME BRAND SPEAKER RELAY............ 3
RADIO IGNITION INTERFERENCE........... 2
RADIOS................................ 1
REMOTE RADIO SWITCHES................ 3
DIAGNOSIS AND TESTING
ANTENNA.............................. 3AUDIO SYSTEM......................... 4
RADIO................................. 4
REMOTE RADIO SWITCHES................ 6
REMOVAL AND INSTALLATION
ANTENNA EXTENSION CABLE.............. 7
ANTENNA MAST AND CABLE LEAD......... 7
D±PILLAR SPEAKER.................... 10
FRONT DOOR SPEAKER................... 9
INSTRUMENT PANEL SPEAKER............. 8
QUARTER PANEL SPEAKER............... 10
RADIO/TAPE/CD PLAYER.................. 8
REMOTE RADIO SWITCHES................ 9
GENERAL INFORMATION
INTRODUCTION
Operating instructions for the factory installed
audio systems can be found in the Owner's Manual
provided with the vehicle.
NS vehicles are equipped with an Ignition Off
Draw (IOD) fuse in the power distribution center
located in the engine compartment. After the IOD
fuse or battery has been disconnected, the radio sta-
tion sets and clock will require resetting.
DESCRIPTION AND OPERATION
ANTENNA
All models use a fixed-length stainless steel rod-
type antenna mast, installed at the right front fender
of the vehicle. The antenna mast is connected to the
center wire of the coaxial antenna cable, and is not
grounded to any part of the vehicle.
To eliminate static, the antenna base must have a
good ground. The coaxial antenna cable shield (the
outer wire mesh of the cable) is grounded to the
antenna base and the radio chassis.
The antenna coaxial cable has an additional dis-
connect, located near the right end of the instrument
panel. This additional disconnect allows the instru-
ment panel assembly to be removed and installed
without removing the radio.
The factory-installed Electronically Tuned Radios
(ETRs) automatically compensate for radio antenna
trim. Therefore, no antenna trimmer adjustment isrequired or possible when replacing the receiver or
the antenna.
INTERFERENCE ELIMINATION
Some components used on the vehicles are
equipped with a capacitor to suppress radio fre-
quency interference/static.
Capacitors are mounted in various locations inter-
nal to the generator, instrument cluster and wind-
shield wiper motor.
To eliminate radio interference, ground straps are
used in different areas of the vehicle. These ground
circuits should be securely tightened to assure good
metal to metal contact. The ground straps conduct
very small high frequency electrical signals to ground
and require clean surface contact area. The radio
ground is supplied from the instrument panel har-
ness and is attached to the rear of the radio. Some
engines have other ground straps to eliminate fur-
ther radio interference:
²Radio chassis to instrument panel structure
²Engine to dash panel
²Engine to chassis
²A/C h valve to dash panel
Radio resistance type spark plug cables in the high
tension circuit of the ignition system complete the
interference suppression. Faulty or deteriorated
spark plug wires should be replaced.
RADIOS
Available factory-installed radio receivers for this
model include an AM/FM/cassette (RAS sales code),
an AM/FM/cassette/5-band graphic equalizer with CD
changer control feature (RBN sales code), an AM/FM/
NSAUDIO SYSTEMS 8F - 1

Page 404 of 1938

CHRYSLER VOYAGER 1996 Service Manual CD/3-band graphic equalizer (RBR sales code), or an
AM/FM/CD/cassette/3-band graphic equalizer (RAZ
sales code).
All factory-installed radio receivers are stereo Elec-
tronically Tuned Radios (ETR) an

CD/3-band graphic equalizer (RBR sales code), or an
AM/FM/CD/cassette/3-band graphic equalizer (RAZ
sales code).
All factory-installed radio receivers are stereo Elec-
tronically Tuned Radios (ETR) and include an elec-
tronic digital clock function.
All factory-installed radio receivers, except the
RAS model, communicate on the Chrysler Collision
Detection (CCD) data bus network through a sepa-
rate two-way wire harness connector. The CCD data
bus network allows the sharing of sensor informa-
tion. This helps to reduce wire harness complexity,
internal controller hardware, and component sensor
current loads. At the same time, this system provides
increased reliability, enhanced diagnostics, and
allows the addition of many new feature capabilities.
In addition, radios connected to the CCD data bus
have several audio system functions that can be diag-
nosed using a DRB scan tool. Refer to the proper
Diagnostic Procedures manual for more information
on DRB testing of the audio systems.
The radio can only be serviced by an authorized
radio repair station. Refer to the latest Warranty Pol-
icies and Procedures manual for a current listing of
authorized radio repair stations.
For more information on radio features, setting
procedures, and control functions refer to the owner's
manual in the vehicle glove box.
RADIO IGNITION INTERFERENCE
If receiving ignition/engine interference noise on
the radio stations, check and clean all engine and
body ground connections. Tighten properly after
cleaning. Example (Fig. 1), (Fig. 2), (Fig. 3) and (Fig.
4).
Ensure all ground connections are without corro-
sion.
CHOKEÐINFINITY SPEAKERS
If the audio system is lacking bass response, check
for continuity across the choke connector. If no conti-
nuity Replace choke. The choke is located on the
Fig. 1 Motor Mount to Frame Rail Ground
Fig. 2 2.4L Engine Block Ground
Fig. 3 3.0L Engine Block Ground
Fig. 4 3.3/3.8L Engine Block Ground
8F - 2 AUDIO SYSTEMSNS
DESCRIPTION AND OPERATION (Continued)

Page 405 of 1938

CHRYSLER VOYAGER 1996 Service Manual bracket behind the junction block/body control mod-
ule (Fig. 5).
REMOTE RADIO SWITCHES
A remote radio control switch option is available on
LXI models sold in North America with the AM/FM/
cassette/5

bracket behind the junction block/body control mod-
ule (Fig. 5).
REMOTE RADIO SWITCHES
A remote radio control switch option is available on
LXI models sold in North America with the AM/FM/
cassette/5-band graphic equalizer with CD changer
control feature (RBN sales code), or the AM/FM/CD/
cassette/3-band graphic equalizer (RAZ sales code)
radio receivers. Two rocker-type switches are
mounted on the back (instrument panel side) of the
steering wheel spokes. The switch on the left spoke is
the seek switch and has seek up, seek down, and pre-
set station advance functions. The switch on the
right spoke is the volume control switch and has vol-
ume up, and volume down functions (Fig. 6).
These switches are resistor multiplexed units that
are hard-wired to the Body Control Module (BCM)
through the clockspring. The BCM sends the propermessages on the Chrysler Collision Detection (CCD)
data bus network to the radio receiver. For diagnosis
of the BCM or the CCD data bus, the use of a DRB
scan tool and the proper Diagnostic Procedures man-
ual are recommended. For more information on the
operation of the remote radio switch controls, refer to
the owner's manual in the vehicle glove box.
NAME BRAND SPEAKER RELAY
Relay is located in the junction block. To test relay
refer to the Audio Diagnostic Test Procedures or use
a known good relay.
DIAGNOSIS AND TESTING
ANTENNA
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, REFER TO GROUP 8M - PASSIVE
RESTRAINT SYSTEMS BEFORE ATTEMPTING ANY
STEERING WHEEL, STEERING COLUMN, OR
INSTRUMENT PANEL COMPONENT DIAGNOSIS OR
SERVICE. FAILURE TO TAKE THE PROPER PRE-
CAUTIONS COULD RESULT IN ACCIDENTAL AIR-
BAG DEPLOYMENT AND POSSIBLE PERSONAL
INJURY.
The following four tests are used to diagnose the
antenna with an ohmmeter:
²Test 1- Mast to ground test
²Test 2- Tip-of-mast to tip-of-conductor test
²Test 3- Body ground to battery ground test
²Test 4- Body ground to coaxial shield test.
The ohmmeter test lead connections for each test
are shown in Antenna Tests (Fig. 7).
NOTE: This model has a two-piece antenna coaxial
cable. Tests 2 and 4 must be conducted in two
steps to isolate a coaxial cable problem; from the
coaxial cable connection under the right end of the
instrument panel near the right cowl side panel to
the antenna base, and then from the coaxial cable
connection to the radio chassis connection.
TEST 1
Test 1 determines if the antenna mast is insulated
from the base. Proceed as follows:
(1) Unplug the antenna coaxial cable connector
from the radio chassis and isolate.
(2) Connect one ohmmeter test lead to the tip of
the antenna mast. Connect the other test lead to the
antenna base. Check for continuity.
(3) There should be no continuity. If continuity is
found, replace the faulty or damaged antenna base
and cable assembly.
Fig. 5 Choke Location
Fig. 6 Remote Radio Switch Operational View
NSAUDIO SYSTEMS 8F - 3
DESCRIPTION AND OPERATION (Continued)

Page 406 of 1938

CHRYSLER VOYAGER 1996 Service Manual TEST 2
Test 2 checks the antenna for an open circuit as
follows:
(1) Unplug the antenna coaxial cable connector
from the radio chassis.
(2) Connect one ohmmeter test lead to the tip of
the antenna mas

TEST 2
Test 2 checks the antenna for an open circuit as
follows:
(1) Unplug the antenna coaxial cable connector
from the radio chassis.
(2) Connect one ohmmeter test lead to the tip of
the antenna mast. Connect the other test lead to the
center pin of the antenna coaxial cable connector.
(3) Continuity should exist (the ohmmeter should
only register a fraction of an ohm). High or infinite
resistance indicates damage to the base and cable
assembly. Replace the faulty base and cable, if
required.
TEST 3
Test 3 checks the condition of the vehicle body
ground connection. This test should be performed
with the battery positive cable removed from the bat-
tery. Disconnect both battery cables, the negative
cable first. Reconnect the battery negative cable and
perform the test as follows:
(1) Connect one ohmmeter test lead to the vehicle
fender. Connect the other test lead to the battery
negative post.
(2) The resistance should be less than (1) ohm.
(3) If the resistance is more than (1) ohm, check
the braided ground strap connected to the engine and
the vehicle body for being loose, corroded, or dam-
aged. Repair the ground strap connection, if required.
TEST 4
Test 4 checks the condition of the ground between
the antenna base and the vehicle body as follows:(1) Connect one ohmmeter test lead to the vehicle
fender. Connect the other test lead to the outer crimp
on the antenna coaxial cable connector.
(2) The resistance should be less then (1) ohm.
(3) If the resistance is more then (1) ohm, clean
and/or tighten the antenna base to fender mounting
hardware.
AUDIO SYSTEM
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, REFER TO GROUP 8M - PASSIVE
RESTRAINT SYSTEMS BEFORE ATTEMPTING ANY
STEERING WHEEL, STEERING COLUMN, OR
INSTRUMENT PANEL COMPONENT DIAGNOSIS OR
SERVICE. FAILURE TO TAKE THE PROPER PRE-
CAUTIONS COULD RESULT IN ACCIDENTAL AIR-
BAG DEPLOYMENT AND POSSIBLE PERSONAL
INJURY.
RADIO
If the vehicle is equipped with remote radio
switches located on the backs of the steering wheel
spokes, and the problem being diagnosed is related to
one of the symptoms listed below, be certain to check
the remote radio switches and circuits as described
in this group, prior to attempting radio diagnosis or
repair.
²Stations changing with no remote radio switch
input
²Radio memory presets not working properly
²Volume changes with no remote radio switch
input
²Remote radio switch buttons taking on other
functions
²CD player skipping tracks
²Remote radio switch inoperative.
For circuit descriptions and diagrams, refer to
Group 8W - Wiring Diagrams.
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, REFER TO GROUP 8M - PASSIVE
RESTRAINT SYSTEMS BEFORE ATTEMPTING ANY
STEERING WHEEL, STEERING COLUMN, OR
INSTRUMENT PANEL COMPONENT DIAGNOSIS OR
SERVICE. FAILURE TO TAKE THE PROPER PRE-
CAUTIONS COULD RESULT IN ACCIDENTAL AIR-
BAG DEPLOYMENT AND POSSIBLE PERSONAL
INJURY.
CAUTION: The speaker output of the radio is a
ªfloating groundº system. Do not allow any speaker
lead to short to ground, as damage to the radio
may result.
Fig. 7 Antenna Tests
8F - 4 AUDIO SYSTEMSNS
DIAGNOSIS AND TESTING (Continued)

Page 407 of 1938

CHRYSLER VOYAGER 1996 Service Manual CONDITION POSSIBLE CAUSE CORRECTION
NO AUDIO. 1. FUSE FAULTY.
2. RADIO CONNECTOR
FAULTY.
3. WIRING FAULTY.
4. GROUND FAULTY.
5. RADIO FAULTY.
6. SPEAKERS FAULTY.1. CHECK RADIO FUSES IN FUSEBLOCK MODUL

CONDITION POSSIBLE CAUSE CORRECTION
NO AUDIO. 1. FUSE FAULTY.
2. RADIO CONNECTOR
FAULTY.
3. WIRING FAULTY.
4. GROUND FAULTY.
5. RADIO FAULTY.
6. SPEAKERS FAULTY.1. CHECK RADIO FUSES IN FUSEBLOCK MODULE.
REPLACE FUSES, IF REQUIRED.
2. CHECK FOR LOOSE OR CORRODED RADIO
CONNECTOR. REPAIR, IF REQUIRED.
3. CHECK FOR BATTERY VOLTAGE AT RADIO
CONNECTOR. REPAIR WIRING, IF REQUIRED.
4. CHECK FOR CONTINUITY BETWEEN RADIO CHASSIS
AND A KNOWN GOOD GROUND. THERE SHOULD BE
CONTINUITY. REPAIR GROUND, IF REQUIRED.
5. EXCHANGE OR REPLACE RADIO, IF REQUIRED.
6. SEE SPEAKER DIAGNOSIS, IN THIS GROUP.
NO DISPLAY. 1. FUSE FAULTY.
2. RADIO CONNECTOR
FAULTY.
3. WIRING FAULTY.
4. GROUND FAULTY.
5. RADIO FAULTY.1. CHECK RADIO FUSES IN FUSEBLOCK MODULE.
REPLACE FUSES, IF REQUIRED.
2. CHECK FOR LOOSE OR CORRODED RADIO
CONNECTOR. REPAIR, IF REQUIRED.
3. CHECK FOR BATTERY VOLTAGE AT RADIO
CONNECTOR. REPAIR WIRING, IF REQUIRED.
4. CHECK FOR CONTINUITY BETWEEN RADIO CHASSIS
AND A KNOWN GOOD GROUND. THERE SHOULD BE
CONTINUITY. REPAIR GROUND, IF REQUIRED.
5. EXCHANGE OR REPLACE RADIO, IF REQUIRED.
NO MEMORY. 1. FUSE FAULTY.
2. RADIO CONNECTOR
FAULTY.
3. WIRING FAULTY.
4. GROUND FAULTY.
5. RADIO FAULTY.1. CHECK IGNITION-OFF DRAW FUSE. REPLACE FUSE,
IF REQUIRED.
2. CHECK FOR LOOSE OR CORRODED RADIO
CONNECTOR. REPAIR, IF REQUIRED.
3. CHECK FOR BATTERY VOLTAGE AT RADIO
CONNECTOR. REPAIR WIRING, IF REQUIRED.
4. CHECK FOR CONTINUITY BETWEEN RADIO CHASSIS
AND A KNOWN GOOD GROUND. THERE SHOULD BE
CONTINUITY. REPAIR GROUND, IF REQUIRED.
5. EXCHANGE OR REPLACE RADIO, IF REQUIRED.
POOR RADIO
RECEPTION.1. ANTENNA FAULTY.
2. GROUND FAULTY.
3. RADIO FAULTY.1. SEE ANTENNA DIAGNOSIS, IN THIS GROUP. REPAIR
OR REPLACE ANTENNA, IF REQUIRED.
2. CHECK FOR CONTINUITY BETWEEN RADIO CHASSIS
AND A KNOWN GOOD GROUND. THERE SHOULD BE
CONTINUITY. REPAIR GROUND, IF REQUIRED..
3. EXCHANGE OR REPLACE RADIO, IF REQUIRED.
NO/POOR TAPE
OPERATION.1. FAULTY TAPE.
2. FOREIGN OBJECTS
BEHIND TAPE DOOR.
3. DIRTY CASSETTE TAPE
HEAD.
4. FAULTY TAPE DECK.1. INSERT KNOWN GOOD TAPE AND TEST OPERATION.
2. REMOVE FOREIGN OBJECTS AND TEST OPERATION.
3. CLEAN HEAD WITH MOPAR CASSETTE HEAD
CLEANER.
4. EXCHANGE OR REPLACE RADIO, IF REQUIRED.
NO COMPACT
DISC
OPERATION1. FAULTY CD.
2. FOREIGN MATERIAL ON
CD.
3. CONDENSATION ON CD
OR OPTICS.
4. FAULTY CD PLAYER.1. INSERT KNOWN GOOD CD AND TEST OPERATION.
2. CLEAN CD AND TEST OPERATION.
3. ALLOW TEMPERATURE OF VEHICLE INTERIOR TO
STABILIZE AND TEST OPERATION.
4. EXCHANGE OR REPLACE RADIO, IF REQUIRED.
AUDIO SYSTEM DIAGNOSIS
NSAUDIO SYSTEMS 8F - 5
DIAGNOSIS AND TESTING (Continued)

Page 408 of 1938

CHRYSLER VOYAGER 1996 Service Manual (1) Check the fuse(s) in the junction block and the
Power Distribution Center (PDC). If OK, go to Step
2. If not OK, repair the shorted circuit or component
as required and replace the faulty fuse(s).

(1) Check the fuse(s) in the junction block and the
Power Distribution Center (PDC). If OK, go to Step
2. If not OK, repair the shorted circuit or component
as required and replace the faulty fuse(s).
(2) Check for battery voltage at the fuse in the
PDC. If OK, go to Step 3. If not OK, repair the open
circuit to the battery as required.
(3) Turn the ignition switch to the ON position.
Check for battery voltage at the fuse in the junction
block. If OK, go to Step 4. If not OK, repair the open
circuit to the ignition switch as required.
(4) Turn the ignition switch to the OFF position.
Disconnect and isolate the battery negative cable.
Remove the instrument cluster center bezel. Remove
the radio, but do not unplug the wire harness connec-
tors. Check for continuity between the radio chassis
and a good ground. There should be continuity. If
OK, go to Step 5. If not OK, repair the open radio
chassis ground circuit as required.
(5) Connect the battery negative cable. Turn the
ignition switch to the ON position. Check for battery
voltage at the fused ignition switch output circuit
cavity of the left (gray) radio wire harness connector.
If OK, go to Step 6. If not OK, repair the open circuit
as required.
(6) Turn the ignition switch to the OFF position.
Check for battery voltage at the fused B(+) circuit
cavity of the left (gray) radio wire harness connector.
If OK, replace the faulty radio. If not OK, repair the
open circuit to the Ignition-Off Draw (IOD) fuse as
required.
REMOTE RADIO SWITCHES
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, REFER TO GROUP 8M - PASSIVE
RESTRAINT SYSTEMS BEFORE ATTEMPTING ANY
STEERING WHEEL, STEERING COLUMN, OR
INSTRUMENT PANEL COMPONENT DIAGNOSIS OR
SERVICE. FAILURE TO TAKE THE PROPER PRE-
CAUTIONS COULD RESULT IN ACCIDENTAL AIR-
BAG DEPLOYMENT AND POSSIBLE PERSONAL
INJURY.
(1) Disconnect and isolate the battery negative
cable. Wait two minutes for the airbag system capac-
itor to discharge before further service.
(2) Remove the remote radio switch(es) from the
steering wheel.
(3) Use an ohmmeter to check the switch resis-
tance as shown in the Remote Radio Switch Test
table (Fig. 8).
NOTE: The right remote radio switch back is white
in color. The left switch back is black in color. The
right/left remote radio switch orientation is with the
steering wheel installed, and driver in drivers seat.(4) If the switch resistance checks OK, go to Step
5. If not OK, replace the faulty switch.
(5) Check for continuity between the ground cir-
cuit cavity of the switch wire harness connector and
a good ground. There should be continuity. If OK, go
to Step 6. If not OK, repair the open circuit as
required.
(6) Unplug the 24-way white wire harness connec-
tor from the Body Control Module (BCM). Check for
continuity between the radio control circuit cavity of
the remote radio switch wire harness connector and a
good ground. There should be no continuity. If OK, go
to Step 7. If not OK, repair the short circuit as
required.
(7) Check for continuity between the radio control
circuit cavities of the remote radio switch wire har-
ness connector and the BCM wire harness connector.
There should be continuity. If OK, refer to the proper
Diagnostic Procedures manual to test the BCM and
the CCD data bus. If not OK, repair the open circuit
as required.
Fig. 8 Remote Radio Switches
REMOTE RADIO SWITCH TEST
SWITCH POSITION RESISTANCE
VOLUME UP 7320 OHMS
VOLUME DOWN 1210 OHMS
SEEK UP 4530 OHMS
SEEK DOWN 2050 OHMS
PRE-SET STATION ADVANCE 10 OHMS
8F - 6 AUDIO SYSTEMSNS
DIAGNOSIS AND TESTING (Continued)

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