exj_8f.pdf

(207 KB) Pobierz
XJ
AUDIO SYSTEMS
8F - 1
AUDIO SYSTEMS
TABLE OF CONTENTS
page
page
GENERAL INFORMATION
DESCRIPTION AND OPERATION
INTRODUCTION
An audio system is standard factory-installed
equipment on this model, unless the vehicle is
ordered with an available radio delete option. Refer
to 8W-47 Audio System in Group 8W - Wiring Dia-
grams for complete circuit descriptions and diagrams.
RADIO
Available factory-installed radio receivers for this
model include an AM/FM (RAL sales code), an
AM/FM/cassette (RAS sales code), and an AM/FM/
CD/cassette/3-band graphic equalizer (RAZ sales
code). All factory-installed radio receivers are stereo
Electronically Tuned Radios (ETR), and include an
electronic digital clock function.
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.
NOTE: This group covers both Left-Hand Drive
(LHD) and Right-Hand Drive (RHD) versions of this
model. Whenever required and feasible, the RHD
versions of affected vehicle components have been
constructed as mirror-image of the LHD versions.
While most of the illustrations used in this group
represent only the LHD version, the diagnostic and
service procedures outlined can generally be
applied to either version. Exceptions to this rule
have been clearly identified as LHD or RHD, if a
special illustration or procedure is required.
IGNITION-OFF DRAW FUSE
All vehicles are equipped with an Ignition-Off
Draw (IOD) fuse that is removed when the vehicle is
shipped from the factory. This fuse feeds various
accessories that require battery current when the
ignition switch is in the Off position, including the
clock and radio station preset memory functions. The
fuse is removed to prevent battery discharge during
vehicle storage.
When removing or installing the IOD fuse, it is
important that the ignition switch be in the Off posi-
tion. Failure to place the ignition switch in the Off
position can cause the radio display to become scram-
bled when the IOD fuse is removed and replaced.
Removing and replacing the IOD fuse again, with the
AUDIO SYSTEM
Several combinations of radio receivers and
speaker systems are offered on this model. The stan-
dard equipment audio system includes an AM/FM
(RAL sales code) receiver, and speakers in two loca-
tions.
Following are general descriptions of the major
components in the standard and optional factory-in-
stalled audio systems. Refer to the owner’s manual in
the vehicle glove box for more information on the fea-
tures, use and operation of each of the available
audio systems.
886888517.004.png
8F - 2
AUDIO SYSTEMS
XJ
DESCRIPTION AND OPERATION (Continued)
ignition switch in the Off position, will correct the
scrambled display condition.
The IOD fuse should be checked if the radio is
inoperative. The IOD fuse is located in the Power
Distribution Center (PDC). Refer to the PDC label for
IOD fuse identification and location.
nect allows the instrument 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 is
required or possible when replacing the receiver or
the antenna.
SPEAKER
The standard equipment speaker system includes
two 13.3 centimeter (5.25 inch) diameter full-range
speakers. Each speaker is mounted to the lower front
corner of the front door inner panel behind the door
trim panel.
The four speaker option adds two 13.3 centimeter
(5.25 inch) diameter full-range speakers to the stan-
dard speaker system, for a total of four speakers.
Each of the additional speakers is mounted behind a
grille installed on the outboard ends of a speaker
support structure, which is integral to the headliner
and located just forward of the upper liftgate opening
reinforcement near the rear of the vehicle cargo area.
The premium speaker option upgrades all of the
speakers to Infinity models, and includes a 100 watt
Infinity amplifier. Each front door has two separate
Infinity speakers: a woofer mounted low in the door,
and a tweeter mounted behind the door flag trim
panel. Infinity coaxial speakers are mounted in the
headliner speaker support structure. The Infinity
amplifier is mounted to the floor panel under the left
rear seat cushion.
RADIO NOISE SUPPRESSION
DESCRIPTION
Radio Frequency Interference (RFI) and Electro-
Magnetic Interference (EMI) noise suppression is
accomplished primarily through circuitry internal to
the radio receivers. These internal suppression
devices are only serviced as part of the radio receiver.
External suppression devices that are used on this
vehicle to control RFI or EMI noise include the fol-
lowing:
²
Radio antenna base ground
²
Radio receiver chassis ground wire or strap
²
Engine-to-body ground strap
²
Resistor-type spark plugs
²
Radio suppression-type secondary ignition wir-
ing.
For more information on the spark plugs and sec-
ondary ignition components, refer to Ignition Sys-
tem
in
the
Description
and
Operation
section
of
Group 8D - Ignition System.
DIAGNOSIS AND TESTING
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 cowl side inner panel
behind the instrument panel. This additional discon-
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.
XJ
AUDIO SYSTEMS
8F - 3
DIAGNOSIS AND TESTING (Continued)
Audio System Diagnosis
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.
7. Amplifier faulty (if
equipped).
1. Check radio fuses in junction block. 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. See Radio in the Diagnosis and Testing section of this group.
6. See Speaker in the Diagnosis and Testing section of this
group.
7. See Speaker in the Diagnosis and Testing section of 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 junction block. 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. See Radio in the Diagnosis and Testing section of this group.
CLOCK WILL
NOT KEEP SET
TIME.
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. See Radio in the Diagnosis and Testing section of this group.
POOR RADIO
RECEPTION.
1. Antenna faulty.
2. Ground faulty.
3. Radio faulty.
1. See Antenna in the Diagnosis and Testing section of this
group.
2. Check for continuity between radio chassis and a known good
ground. There should be continuity. Repair ground, if required.
3. See Radio in the Diagnosis and Testing section of this group.
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
OPERATION
1. 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.
886888517.005.png 886888517.006.png 886888517.007.png 886888517.001.png 886888517.002.png
8F - 4
AUDIO SYSTEMS
XJ
DIAGNOSIS AND TESTING (Continued)
RADIO
For circuit descriptions and diagrams, refer to
8W-47 - Audio System in Group 8W - Wiring Dia-
grams.
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
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
“floating ground” system. Do not allow any speaker
lead to short to ground, as damage to the radio
may result.
DEPLOYMENT
AND
POSSIBLE
PERSONAL
INJURY.
(1) Turn the ignition switch to the On position.
Turn the radio on. Adjust the balance and fader con-
trols to check the performance of each individual
speaker. Note the speaker locations that are not per-
forming correctly. Go to Step 2.
(2) Turn the radio off. Turn the ignition switch to
the Off position. Disconnect and isolate the battery
negative cable. Remove the radio from the instru-
ment panel. If the vehicle is equipped with the Infin-
ity speaker package, also unplug the wire harness
connectors at the amplifier. Check both the speaker
feed (+) circuit and return (–) circuit cavities for the
inoperative speaker location(s) at the radio wire har-
ness connectors for continuity to ground. In each
case, there should be no continuity. If OK, go to Step
3. If not OK, repair the shorted speaker circuit(s) as
required.
(3) If the vehicle is equipped with the Infinity
speaker package, go to Step 6. If the vehicle is
equipped with the standard speaker system, check
the resistance between the speaker feed (+) circuit
and return (–) circuit cavities of the radio wire har-
ness connectors for the inoperative speaker loca-
tion(s). The meter should read between 2 and 12
ohms (speaker resistance). If OK, go to Step 4. If not
OK, go to Step 5.
(4) Install a known good radio. Connect the bat-
tery negative cable. Turn the ignition switch to the
On position. Turn on the radio and test the speaker
operation. If OK, replace the faulty radio. If not OK,
turn the radio off, turn the ignition switch to the Off
position, disconnect and isolate the battery negative
cable, remove the test radio, and go to Step 5.
(5) Unplug the speaker wire harness connector at
the inoperative speaker. Check for continuity
between the speaker feed (+) circuit cavities of the
radio wire harness connector and the speaker wire
harness connector. Repeat the check between the
speaker return (–) circuit cavities of the radio wire
harness connector and the speaker wire harness con-
nector. In each case, there should be continuity. If
CAUTION: The speaker output of the radio is a
“floating ground” system. Do not allow any speaker
lead to short to ground, as damage to the radio
may result.
(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 radio, but do not unplug the radio wire
harness connectors. 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 (accesso-
ry/run) circuit cavity of the left (gray) radio wire har-
ness 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.
SPEAKER
For circuit descriptions and diagrams, refer to
8W-47 - Audio System in Group 8W - Wiring Dia-
grams.
XJ
AUDIO SYSTEMS
8F - 5
DIAGNOSIS AND TESTING (Continued)
OK, replace the faulty speaker. If not OK, repair the
open circuit(s) as required.
(6) For each inoperative speaker location, check for
continuity between the speaker feed (+) circuit cavi-
ties of the radio wire harness connectors and the
amplifier wire harness connectors. Repeat the check
for each inoperative speaker location between the
speaker return (–) circuit cavities of the radio wire
harness connectors and the amplifier wire harness
connectors. In each case, there should be continuity.
If OK, go to Step 7. If not OK, repair the open circuit
as required.
(7) Check for continuity between the two ground
circuit cavities of the amplifier wire harness connec-
tor and a good ground. There should be continuity. If
OK, go to Step 8. If not OK, repair the open circuit(s)
as required.
(8) Check the amplifier fuse in the junction block.
If OK, go to Step 9. If not OK, repair the shorted cir-
cuit or component as required and replace the faulty
fuse.
(9) Install the radio. Connect the battery negative
cable. Check for battery voltage at the amplifier fuse
in the junction block. If OK, go to Step 10. If not OK,
repair the open circuit to the PDC as required.
(10) Check for battery voltage at the two fused
B(+) circuit cavities of the amplifier wire harness
connector. If OK, go to Step 11. If not OK, repair the
open
the amplified return (–) circuit cavities of the speaker
wire harness connector and the amplifier wire har-
ness connector. In each case there should be continu-
ity. If OK, replace the faulty speaker. If not OK,
repair the open circuit as required.
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:
²
Test 1 - Mast to ground test
²
Test 2 - Tip-of-mast to tip-of-conductor test
²
Test 3 - Body ground to battery ground test
Test 4 - Body ground to coaxial shield test.
The ohmmeter test lead connections for each test
are shown in Antenna Tests (Fig. 1).
²
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 inner
panel to the antenna base, and then from the coax-
ial cable connection to the radio chassis connec-
tion.
circuit
to
the
fuse
in
the
junction
block
as
required.
(11) Turn the ignition switch to the On position.
Turn the radio on. Check for battery voltage at the
radio 12 volt output circuit cavity of the amplifier
wire harness connector. If OK, go to Step 12. If not
OK, repair the open circuit to the radio as required.
(12) Turn the radio off. Turn the ignition switch to
the Off position. Disconnect and isolate the battery
negative cable. For each inoperative speaker location,
check both the amplified feed (+) circuit and the
amplified return (–) circuit cavities of the amplifier
wire harness connectors for continuity to ground. In
each case there should be no continuity. If OK, go to
Step
13.
If
not
OK,
repair
the
short
circuit
as
required.
(13) For each inoperative speaker location, check
the resistance between the amplified feed (+) circuit
and the amplified return (–) circuit cavities of the
amplifier wire harness connectors. The meter should
read between 2 and 12 ohms (speaker resistance). If
OK, replace the faulty amplifier. If not OK, go to
Step 14.
(14) Unplug the speaker wire harness connector at
the inoperative speaker. Check for continuity
between the amplified feed (+) circuit cavities of the
speaker wire harness connector and the amplifier
wire harness connector. Repeat the check between
Fig. 1 Antenna Tests
886888517.003.png

Plik z chomika:

Inne pliki z tego folderu:

Inne foldery tego chomika:

Zgłoś jeśli naruszono regulamin