EXJ_8F99 jeep xj service manual

7/29/2019 EXJ_8F99 jeep xj service manual

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AUDIO SYSTEMS

CONTENTS

page page

GENERAL INFORMATIONINTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . 1

DESCRIPTION AND OPERATIONANTENNA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2IGNITION-OFF DRAW FUSE . . . . . . . . . . . . . . . 1RADIO NOISE SUPPRESSION . . . . . . . . . . . . . . 2RADIO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

SPEAKER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1DIAGNOSIS AND TESTING

ANTENNA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

AUDIO SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . 2RADIO FREQUENCY INTERFERENCE . . . . . . . 7

RADIO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4SPEAKER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

REMOVAL AND INSTALLATIONAMPLIFIER . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8ANTENNA . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

RADIO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7SOUND BAR . . . . . . . . . . . . . . . . . . . . . . . . . . 10SPEAKER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

GENERAL INFORMATION

INTRODUCTION

F ol low i n g a r e g en er a l d es cr i pt i on s of t h e m a jor

c o m p o n e n t s u s e d i n bo t h t h e s t a n d a r d a n d o p t i o n a l

fa ctory-insta lled a udio syst ems. R efer t o 8W-47 Audio

System in Group 8W - Wiring Diagrams for complete

circuit descriptions and diagrams.

NOTE: This group covers both Left-Hand Drive

(LHD) and Right-Hand Drive (RHD) versions of thismodel. Whenever required and feasible, the RHDversions of affected vehicle components have been

constructed as mirror-image of the LHD versions.While most of the illustrations used in this grouprepresent only the LHD version, the diagnostic andservice procedures outlined can generally beapplied to either version. Exceptions to this rule

have been clearly identified as LHD or RHD, if aspecial illustration or procedure is required.

DESCRIPTION AND OPERATION

RADIO

Available factory-insta l led ra dio receivers for thism od el i n cl ud e a n AM /F M (R AL s a l es cod e), a n

AM/FM/cassett e (RAS sa les code), a nd a n AM/FM/

CD/cassett e/3-band graphic equalizer (RAZ sales

code). All factory-instal led radio receivers are stereo

E l e ct r o n ica l l y Tu n ed R a d i os (E TR ) a n d i n cl u d e a n

electronic digital clock function.

F or m or e i n for m a t i on on r a d i o f ea t u r e s, s et t i n g

procedures, and control functions refer to the owners

manual in the vehicle glove box.

IGNITION-OFF DRAW FUSEAl l v eh i cl es a r e e q ui pp ed w i t h a n I g n it i on -O ff

Draw (IOD) fuse that is removed when the vehicle is

s h i pp ed f r om t h e f a c t or y. Th i s f u s e f e ed s v a r i ou s

a c ces s or i es t h a t r eq u ir e b a t t e r y cu r r en t w h e n t h e

i g n it i on s w i t ch i s i n t h e O f f p os i t ion , i n cl u d in g t h e

clock and radio sta tion preset memory functions. The

f u s e i s r e mov ed t o p r ev en t ba t t e r y d i sch a r g e d u r i n g

vehicle storage.

Wh en r em ov in g or i n st a l l in g t h e I O D f u se, i t i s

i m por t a n t t h a t t h e i g n i t i on s w i t ch be i n t h e O f f p os i -

t i o n . Fa i l u r e t o p l a c e t h e i g n i t i o n s w i t c h i n t h e O f f

position can cause the ra dio display to become scram-

b led w h e n t h e I O D f u se i s r em ov ed a n d r ep la c ed .R e m ov i n g a n d r e pl a ci n g t h e I O D f u s e a g a i n , w i t h t h e

i g n it i on s w i t ch i n t h e O ff p os i t ion , w i l l cor r e ct t h e

scra mbled display condition.

The IOD fuse should be checked i f t he ra dio stat ion

preset memory or clock functions a re errat ic or inop-

e r a t i v e. Th e I O D f u s e i s l oca t e d i n t h e P ow e r Di s t r i -

bu t i on C e n t er (P D C ). R e f er t o t h e P D C l a be l f or I O D

fuse identification and location.

SPEAKER

Th e s t a n d a r d e q u ip m en t s pe a k er s y s t em i n cl u d es

tw o 13.3 centimeter (5.25 inch) diam eter full-ra nge

speakers. Each speaker is mounted to the front lower

inner door panel behind the door trim panel .

Th e s ou n d ba r op t i on a d d s t w o 13.3 c en t i m et e r

(5.25 inch) diameter full-range speakers to the stan-

d a r d s pe a ke r s y st e m, f or a t ot a l of f ou r s pea k e rs .

E a ch of t h e a d d i t ion a l s pe a k er s i s m o u n t ed beh i n d a

gri l le located on the outboard ends of the sound bar,

w h i ch i s l oca t e d o n t h e h e a d l in e r ju st f or w a r d of t h e

upper l i ftgate opening reinforcement near the rear of

the vehicle cargo area.

XJ AUDI O S YS TEM S 8 F - 1


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Th e p r em i u m s pe a k er op t i on u p gr a d e s a l l of t h e

speakers to Infinity models, and includes a 100 watt

I n f i n i t y a m p l i f i e r . E a c h f r o n t d o o r h a s t w o s e p a r a t e

Infinity speakers: a woofer mounted low in the door,

a n d a t w e et e r m o un t ed b eh i nd t h e d o or f la g t r i m

p a n e l . I n f i n i t y c o a x i a l s p e a k e r s a r e m o u n t e d i n t h e

s o u n d ba r . T h e I n f i n i t y a m p l i f i e r i s m o u n t e d t o t h efloor pan under the left rear seat cushion.

ANTENNA

All models use a fixed-length sta inless steel rod-

t y p e a n t e n n a m a s t , i n s t a l le d a t t h e r i g h t f r o nt f en d e r

of the vehicle. The antenna mast is connected to the

ce n t er w i r e o f t h e coa x i a l a n t e n n a ca bl e , a n d i s n o t

g r ou n d ed t o a n y p a r t of t h e v eh i cl e.

To e li m in a t e s t a t i c, t h e a n t e n n a ba s e m u s t h a v e a

g ood g r ou n d . Th e coa x i a l a n t e n n a ca bl e s h i el d (t h e

ou t er w i r e m e sh of t h e ca b l e) i s g r ou n d ed t o t h e

a n t e n n a ba s e a n d t h e r a d i o c h a s s i s .

Th e a n t e n n a coa x ia l ca b l e h a s a n a d d i t ion a l d is -con n ect , l oca t e d n ea r t h e r ig ht cow l s id e p a nel

behind the instrument panel . This additional discon-

n ect a l low s t h e i ns t ru m en t pa n el a s sem bl y t o b e

removed and instal led without removing the radio.

The factory-insta l led Electronically Tuned Rad ios

(E TR s ) a u t om a t i c a l ly com p en s a t e f or r a d i o a n t e n n a

t r i m . Th e r ef or e , n o a n t e n n a t r i m m er a d ju st m e n t i s

required or possible w hen replacing the receiver or

t h e a n t e n n a .

RADIO NOISE SUPPRESSION

R a d i o Fr e q u en cy I n t e r f er e n ce (R FI ) a n d E l e ct r o -

M a g n e t ic I n t e r f er e n ce (E M I ) n oi s e s u pp r es s ion i saccomplished primarily through circuitry internal to

t h e r a d i o r ece iv er s . Th es e i n t er n a l s u pp re ss ion

devices are only serviced as part of the radio receiver.

Externa l suppression devices tha t ar e serviced, an d

s h ou l d be ch e ck ed i n t h e ca s e of R FI or E M I n oi s e

complaints, include the following:

R a d i o a n t e n n a ba s e g r o u n d

Radio chassis ground wire, strap, or bracket

Engine-to-body ground strap (i f the vehicle is so

equipped)

C a b -t o-b ed g r ou n d s t r a p (i f t h e v eh i cl e i s s o

equipped)

H e a t er cor e g r ou n d s t r a p (i f t h e v eh i cl e i s s o

equipped)

Resistor-type spark plugs

Radio suppression-type secondary ignition wir-

ing.

I n a d d i t i o n , i f t h e s o u r c e o f R F I o r E M I n o i s e i s

identified a s a component on t he vehicle (i .e., gener-

a t o r, bl ow e r m ot o r, e t c.), t h e g r ou n d p a t h f or t h a t

component should be checked. If excessive resistance

is f ou nd i n t h a t ci rcu it , r epa i r t h a t cir cu it a s

required before considering an y component replace-

ment.I f t h e s o u r c e o f t h e n o i s e i s i d e n t i f i e d a s t w o - w a y

m ob il e r a d i o or t e le ph on e eq u ip me nt , ch eck t h e

equipment instal lation for the following:

P ow e r con n e ct i on s s h ou l d be m a d e d i r ect l y t o

t h e b a t t e r y, a n d f u se d a s cl os el y t o t h e b a t t e ry a s

possible.

Th e a n t e n n a s h ou l d be m ou n t e d o n t h e r oof or

t o w a r d t h e r e a r o f t h e v e h i c l e . R e m e m be r t h a t m a g -

netic antenna mounts on the roof panel can adversely

affect the operation of an overhead console compass,

i f the vehicle is so equipped.

The a ntenna cable should be fully shielded coax-

i a l ca b le, s hou ld b e a s s hor t a s i s pr a ct i ca l , a n ds h ou ld b e r ou t ed a w a y f r om t h e f a ct or y -i n st a l l ed

vehicle wire ha rnesses whenever possible.

Th e a n ten na a n d ca ble m ust be ca r efu lly

m a t ch ed t o en su re a low S t a n di ng Wa v e R a t io

(SWR).

Fleet vehicles are available with an extra-cost RFI-

suppressed P owertrain Control Module (P CM). This

u n i t r e d u c e s i n t e r f e r e n c e g e n e r a t e d by t h e P C M o n

s om e r a d i o f r eq u e n ci es u s ed i n t w o -w a y r a d i o com -

municat ions. H owever, t his un it wil l not r esolve com-

p la i n t s of R F I i n t h e com m er ci a l AM or F M r a d i o

frequency ranges.

DIAGNOSIS AND TESTING

AUDIO SYSTEM

WARNING: ON VEHICLES EQUIPPED WITH AIR-

BAGS, REFER TO GROUP 8M - PASSIVERESTRAINT SYSTEMS BEFORE ATTEMPTING ANYSTEERING WHEEL, STEERING COLUMN, ORINSTRUMENT PANEL COMPONENT DIAGNOSIS OR

SERVICE. FAILURE TO TAKE THE PROPER PRE-CAUTIONS COULD RESULT IN ACCIDENTAL AIR-

BAG DEPLOYMENT AND POSSIBLE PERSONALINJURY.

8 F - 2 AUDI O S YSTEM S XJ

DESCRIPTION AND OPERATION (Continued)


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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.

1. Check radio fuses in fuseblockmodule. Replace fuses, if required.

2. Check for loose or corroded radio

connector. Repair, if required.3. Check for battery voltage at radioconnector. Repair wiring, if required.

4. Check for continuity betweenradio chassis and a known goodground. There should be continuity.Repair ground, if required.5. Exchange or replace radio, if

required.6. See speaker diagnosis, in thisgroup.

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 radioconnector. Repair wiring, if required.4. Check for continuity between

radio chassis and a known goodground. There should be continuity.Repair ground, if required.5. Exchange or replace radio, ifrequired.

CLOCK WILL NOT KEEP SETTIME.

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 radioconnector. Repair, if required.3. Check for battery voltage at radioconnector. Repair wiring, if required.

4. Check for continuity betweenradio chassis and a known goodground. There should be continuity.Repair ground, if required.

5. Exchange or replace radio, ifrequired.

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 betweenradio chassis and a known good

ground. There should be continuity.Repair ground, if required..3. Exchange or replace radio, ifrequired.


DIAGNOSIS AND TESTING (Continued)


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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 fuseblockmodule. Replace fuses, if required.2. Check for loose or corroded radioconnector. Repair, if required.

3. Check for battery voltage at radio

connector. Repair wiring, if required.4. Check for continuity betweenradio chassis and a known good

ground. There should be continuity.Repair ground, if required.5. Exchange or replace radio, ifrequired.6. See speaker diagnosis, in 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, ifrequired.

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 testoperation.2. Clean CD and test operation.3. Allow temperature of vehicle

interior to stabilize and testoperation.4. Exchange or replace radio, ifrequired.

RADIO

F or ci r cu it d es cr i pt i on s a n d d ia g r a m s , r ef er t o

8W-47 - Audio S ystem in G roup 8W - Wiring Dia -

g r a m s .

WARNING: ON VEHICLES EQUIPPED WITH AIR-BAGS, REFER TO GROUP 8M - PASSIVERESTRAINT SYSTEMS BEFORE ATTEMPTING ANY

STEERING WHEEL, STEERING COLUMN, ORINSTRUMENT PANEL COMPONENT DIAGNOSIS OR

SERVICE. FAILURE TO TAKE THE PROPER PRE-CAUTIONS COULD RESULT IN ACCIDENTAL AIR-


CAUTION: The speaker output of the radio is afloating ground system. Do not allow any speaker

lead to short to ground, as damage to the radiomay result.

(1) Check the fuse(s) in the junction block and the

P o w e r Di s t r i bu t i o n C e n t e r (P DC ). I f O K, g o t o St e p

2. If not OK, repair the shorted circuit or component

as required and replace the faulty fuse(s).

(2) C h eck f or b a t t e ry v ol t a g e a t t h e f us e i n t h e

P DC . I f O K, g o t o St e p 3 . I f n o t O K, r e p a i r t h e o p e n

c i r c u i t t o t h e ba t t e r y a s r e q u i r e d .

(3) Tu r n t h e i g n it i on s w i t ch t o t h e O n p os i t ion .

C h e c k f o r ba t t e r y v o l t a g e a t t h e f u s e i n t h e ju n c t i o n

block. If OK, go to Step 4. If not OK, repair the open

circuit to the ignition switch as required.(4) Tu r n t h e i g n it i on s w i t ch t o t h e O f f p os i t ion .

D i scon n ect a n d i sol a t e t h e b a t t e r y n eg a t i ve ca b l e.

R e m o v e t h e r a d i o a s d e s c r i be d i n t h i s g r o u p , bu t d o

not unplug the radio wire harness connectors. Check

f or con t i n u i t y be t w e e n t h e r a d i o c h a s s is a n d a g ood

ground. There should be continuity. If OK, go to St ep

5. I f n ot O K , r ep a ir t h e op en r a d i o c ha s s is g r ou n d

circuit as required.

(5) C o n n ect t h e ba t t e r y n e g a t i v e c a bl e. Tu r n t h e

ignition switch to the On position. Check for battery

v ol t a g e a t t h e f u s ed i g n it i on s w i t ch ou t p u t ci r cu i t




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cavity of the left (gray) radio wire harness connector.

If OK, go to Step 6. If not OK, repair the open circuit

a s r e q u ir e d .

(6) Tu r n t h e i g n it i on s w i t ch t o t h e O f f p os i t ion .

C h e ck f or ba t t e r y v ol t a g e a t t h e f u se d B (+ ) c i rcu i t

cavity of the left (gray) radio wire harness connector.

I f O K, r e p l a c e t h e f a u l t y r a d i o . I f n o t O K, r e p a i r t h eop en ci r cu i t t o t h e I g n i t i on -O f f Dr a w (I O D) f u s e a s

required.

SPEAKER

F or ci r cu it d es cr i pt i on s a n d d ia g r a m s , r ef er t o

8W-47 - Audio S ystem in G roup 8W - Wiring Dia -

g r a m s .

WARNING: ON VEHICLES EQUIPPED WITH AIR-

BAGS, REFER TO GROUP 8M - PASSIVERESTRAINT SYSTEMS BEFORE ATTEMPTING ANYSTEERING WHEEL, STEERING COLUMN, OR

INSTRUMENT PANEL COMPONENT DIAGNOSIS ORSERVICE. FAILURE TO TAKE THE PROPER PRE-CAUTIONS COULD RESULT IN ACCIDENTAL AIR-BAG DEPLOYMENT AND POSSIBLE PERSONALINJURY.

CAUTION: The speaker output of the radio is afloating ground system. Do not allow any speakerlead to short to ground, as damage to the radiomay result.


Turn the r adio on. Adjust the bala nce and fader con-

t r ol s t o ch eck t h e p er f or m a n ce of e a ch i n di vi du a l

speaker. Note the speaker locations that are not per-

forming correctly. Go to Step 2.

(2) Turn the rad io off. Turn the ignition switch to

t h e O f f p os i t ion . Di s con n e ct a n d i s ol a t e t h e ba t t e r y

negative cable. Remove the radio as described in this

g r ou p. I f t h e v eh i cl e i s eq u ip pe d w i t h t h e I n f in i t y

s p e a k e r p a c k a g e , a l s o u n p l u g t h e w i r e h a r n e s s c o n -

nectors at the amplifier. Check both the speaker feed

(+ ) circuit and return () circuit cavities for the inop-

e r a t i v e s p ea k e r l oca t i on (s ) a t t h e r a d i o w i r e h a r n e ss

con n e ct o r s f or con t i n u i t y t o g r ou n d . I n e a ch ca s e ,

t h e r e s h ou l d be n o c on t i n u i t y. I f O K, g o t o S t e p 3 . I fn ot O K , r ep a i r t h e s h or t ed s pe a ke r ci r cu it (s ) a s

required.

(3) I f t h e v eh i cl e i s e q ui pp ed w i t h t h e I n f in i t y

s pea k er pa ck a ge, g o t o S t ep 6. I f t h e v eh icl e i s

e q u ip pe d w i t h t h e s t a n d a r d s p ea k e r s y s t em , ch e ck

t h e r e si s t a n ce bet w e e n t h e s pe a k er f ee d (+ ) ci r cu i t

a n d r e t u r n () c i r c u i t c a v i t i e s o f t h e r a d i o w i r e h a r -

n e ss con n e ct o r s f or t h e i n op er a t i v e s pe a k er l oca -

t i on (s ). Th e m et e r s h ou ld r ea d b et w e en 2 a n d 12

ohms (speaker resistance). If OK, go to Step 4. If not

O K, g o t o St e p 5 .

(4) I n s t a l l a k n ow n g ood r a d i o. C on n ect t h e b a t -

t e r y n e ga t i v e c a bl e. Tu r n t h e i g n it i on s w i t ch t o t h e

O n p os i t ion . Tu r n on t h e r a d i o a n d t e s t t h e s pe a k er

op er a t i o n . I f O K, r e p la c e t h e f a u l t y r a d i o. I f n ot O K,

t u r n t h e r a d i o o f f , t u r n t h e i g n i t i o n s w i t c h t o t h e O f f

position, disconnect an d isolate t he ba ttery negative

c a bl e , r e m o v e t h e t e s t r a d i o , a n d g o t o St e p 5 .(5 ) U n p l u g t h e s p e a k e r w i r e h a r n e s s c o n n e c t o r a t

t h e i nop er a t i ve s pea k er. C h eck f or con t in u it y

bet w e e n t h e s pe a k er f ee d (+ ) ci r cu i t ca v i t i es of t h e

r a d i o w i r e h a r n e s s c on n e ct o r a n d t h e s p ea k e r w i r e

h a r n es s con n ect or. R ep ea t t h e ch eck b et w e en t h e

s pe a k er r e t u r n () ci r cu i t ca v i t i es of t h e r a d i o w i r e

harness connector and the speaker wire harness con-

n e ct o r. I n e a ch ca s e , t h e r e s h ou l d be con t i n u i t y. I f

O K, r e p la c e t h e f a u l t y s p ea k e r. I f n ot O K, r e p a i r t h e

open circuit(s) as required.

(6) For ea ch inopera tive speaker loca tion, check for

continuity between the speaker feed (+ ) circuit cavi-

t i es of t h e r a d i o w i r e h a r n es s con n ect or s a n d t h eamplifier wire harness connectors. Repeat the check

f or e a ch i n op er a t i v e s p ea k e r l oca t i on bet w e e n t h e

s pe a k er r e t u r n () ci r cu i t ca v i t i es of t h e r a d i o w i r e

h a r n e s s c on n e ct o r s a n d t h e a m p l if i er w i r e h a r n e ss

connectors. In each case, there should be continuity.

If OK, go to Step 7. If not OK, repair the open circuit

as required.

(7) C h e ck f or con t i n u i t y bet w e e n t h e t w o g r ou n d

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.I f O K, g o t o St e p 9 . I f n ot O K, r e p a i r t h e s h or t e d c ir -

cuit or component as required and replace the faulty

fuse.

(9 ) C h e c k f o r ba t t e r y v o l t a g e a t t h e a m p l i f i e r f u s e

in the junction block. If OK, go to Step 10. If not OK,

r e p a i r t h e o p e n c i r c u i t t o t h e P DC a s r e q u i r e d .

(10) Instal l the radio. Connect the battery negative

cable. Check for battery voltage at the two fused B(+ )

circuit cavities of the amplifier wire harness connec-

t o r . I f O K, g o t o St e p 1 1 . I f n o t O K, r e p a i r t h e o p e n

circuit to the fuse in the junction block as required.


Tu r n t h e r a d i o on . C h e ck f o r ba t t e r y v o lt a g e a t t h e

r a d i o 1 2 v o lt ou t p u t ci r cu i t ca v i t y of t h e a m p l if i er

w i r e h a r n e s s c o n n e c t o r . I f O K, g o t o St e p 1 2 . I f n o t

O K, r e p a i r t h e o p en ci r cu i t t o t h e r a d i o a s r e q u ir e d .

(12) Turn the ra dio off. Turn the ignition switch to

t h e O ff p os i t ion . Di s con n e ct a n d i s ol a t e t h e ba t t e r y

negative cable. F or each inopera tive speaker locat ion,

ch eck b ot h t h e a m p li fi ed f ee d (+ ) ci r cu it a n d t h e

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




6/12

S t ep 13. I f n ot O K, r epa i r t h e s hor t cir cu it a s

required.

(13) F or each inopera tive speaker location, check

the resista nce between the am plified feed (+ ) circuit

a n d t h e a m p l if i ed r e t u r n () ci r cu i t ca v i t i es of t h e

amplifier wire harness connectors. The meter should

read between 2 and 12 ohms (speaker resistance). IfO K , r ep la c e t h e f a u lt y a m p li fi er. I f n ot O K , g o t o

Step 14.

(14) Unplug the speaker wire harness connector at

t h e i noper a t iv e s pea k er. C h eck f or con t in u it y

between t he amplified feed (+ ) circuit cavities of the

s pe a k er w i r e h a r n es s con n ect or a n d t h e a m p li fi er

w i r e h a r n e s s con n e ct o r. R e pe a t t h e ch e ck bet w e e n

the amplified return () circuit cavities of the speaker

w i r e h a r n e ss con n e ct o r a n d t h e a m p l if i er w i r e h a r -

ness connector. In each case there should be continu-

i t y. I f O K , r ep la c e t h e f a u lt y s pea k e r. I f n ot O K ,

repair the open circuit as required.

ANTENNA


STEERING WHEEL, STEERING COLUMN, ORINSTRUMENT PANEL COMPONENT DIAGNOSIS ORSERVICE. FAILURE TO TAKE THE PROPER PRE-CAUTIONS COULD RESULT IN ACCIDENTAL AIR-


T h e f o l l o w i n g f o u r t e s t s a r e u s e d t o d i a g n o s e t h ea n t e n n a w i t h a n o h m m e t e r :

Test 1 - M a s t t o g r o u n d t e s t

Test 2 - Tip-of-ma st to tip-of-condu ctor test

Test 3 - B o d y g r o u n d t o ba t t e r y g r o u n d t e s t

Test 4 - Body ground to coaxial shield test .

The ohmmeter test lead connections for ea ch t est

ar e shown in Antenna Tests (Fig. 1).

NOTE: This model has a two-piece antenna coaxialcable. Tests 2 and 4 must be conducted in two

steps to isolate a coaxial cable problem; from thecoaxial cable connection under the right end of the

instrument panel near the right cowl side panel tothe antenna base, and then from the coaxial cable

connection to the radio chassis connection.

TEST 1

Test 1 determines i f the a ntenna mast is insulated

from the base. Proceed as fol lows:

(1) U n p lu g t h e a n t e n n a coa x i a l ca b l e con n ect or

f r om t h e r a d i o c h a s s is a n d i s ol a t e .

(2) C on n e ct on e oh m m et e r t e s t l ea d t o t h e t i p o f

t h e a n t e n n a m a s t . C o n n e c t t h e o t h e r t e s t l e a d t o t h e

antenna base. Check for continuity.

(3) There should be no continuity. If continuity is

f ou n d , r e pl a ce t h e f a u lt y or d a m a g e d a n t e nn a b a s e

and cable assembly.

TEST 2

Te st 2 c h eck s t h e a n t e n n a f or a n op en ci r cu i t a s

follows:

(1) U n p lu g t h e a n t e n n a coa x i a l ca bl e con n e ct o rf r om t h e r a d i o c h a s s i s.

(2) C on n e ct on e oh m m et e r t e s t l ea d t o t h e t i p o f

t h e a n t e n n a m a s t . C o n n e c t t h e o t h e r t e s t l e a d t o t h e

center pin of the antenna coaxial cable connector.

(3) Continuity should exist (the ohmmeter should

o n l y r e g i s t e r a f r a c t i o n o f a n o h m ). H i g h o r i n f i n i t e

r es is t a n ce i n di ca t e s d a m a g e t o t h e b a s e a n d ca b l e

a s sem bl y. R epl a ce t h e f a ul t y b a se a n d ca b le, i f

required.

TEST 3

Te st 3 ch e ck s t h e con d i t i on of t h e v eh i cl e bod y

g r ou n d con n e ct i on . Th i s t e s t s h ou l d be p er f or m edwith the battery positive cable removed from the bat-

t e r y. D i scon n ect b ot h b a t t e ry ca b l es , t h e n eg a t i ve

cable first . Reconnect the battery negative cable and

perform the test as fol lows:

(1) Connect one ohmmeter test lead to the vehicle

f en d er. C on n ect t h e ot h e r t e st l ea d t o t h e b a t t e ry

negative post.

(2) The resistance should be less than one ohm.

(3 ) I f t h e r e s i s t a n c e i s m o r e t h a n o n e o h m , c h e c k

the braided ground strap connected to the engine and

Fig. 1 Antenna Tests




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t h e v eh i cl e bod y f or bei n g l oos e, cor r od e d , or d a m -

aged. Repair the ground stra p connection, i f required.

TEST 4

Test 4 checks the condition of the ground betw een

t h e a n t e n n a ba s e a n d t h e v e h i c l e bo d y a s f o l l o w s :

(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 one ohm.

(3 ) I f t h e r e s i s t a n c e i s m o r e t h e n o n e o h m , c l e a n

a n d /or t i g h t e n t h e a n t e n n a ba s e t o f e n d er m ou n t i n g

h a r d w a r e .

RADIO FREQUENCY INTERFERENCE


STEERING WHEEL, STEERING COLUMN, ORINSTRUMENT PANEL COMPONENT DIAGNOSIS ORSERVICE. FAILURE TO TAKE THE PROPER PRE-CAUTIONS COULD RESULT IN ACCIDENTAL AIR-


Inspect the ground connections at the following:

Blower motor

Electric fuel pump

Ge n e r a t o r

Ignition module

Wiper motor

Antenna coaxial ground Radio ground

B ody-to-engine bra ided ground stra p (i f t he vehi-

cle is so equipped).

C lea n , t ig ht en , or r epa i r t h e con nect ion s a s

required.

Also inspect the following secondary ignition sys-

tem components, as described in Group 8D - Ignition

Systems:

Sp a r k p lu g w i r e r o u t i n g a n d con d i t i on

Di s t r i bu t or ca p a n d r ot o r

Ignition coil

Sp a r k p lu g s .

R e rou t e t h e s p a r k p lu g w i r e s o r r e p la c e t h e f a u l t ycomponents as required.

REMOVAL AND INSTALLATION

RADIO


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 PERSONALINJURY.

(1) D is con n ect a n d i sol a t e t h e b a t t e r y n eg a t i ve

cable.

(2) U s in g a t r i m s t ick or a n ot h e r s u it a b l e w i d e

flat-bladed tool , gently pry the instrument panel cen-

t e r be z e l a w a y f r o m t h e i n s t r u m e n t p a n e l t o r e l e a s e

the six snap cl ip retainers (Fig. 2).

(3) Remove the center bezel from the vehicle.

(4) R e m ov e t h e t w o s cr e w s f r om t h e f r on t of t h e

r a d i o t h a t s ecu r e i t t o t h e i n s t r u m en t p a n e l (Fi g . 3 ).

Fig. 2 Center Bezel Remove/Install

Fig. 3 Radio Remove/Install

FWD RADIO SCREW




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(5) P u l l t h e r a d i o o ut f r om t h e i n st r u m en t p a n el

f a r e nou g h t o u n pl ug t h e w i r e h a r n es s con n ect or s

and the antenna coaxial cable connector (Fig. 4).

(6) Remove the radio from the vehicle.

(7) R ev er s e t h e r em ov a l p roce du r es t o i n st a l l .

Ti g h t en t h e r a d i o m o u n t i n g s c r ew s t o 5 N m (45 i n .

lbs.).

AMPLIFIER

(1) D is con n ect a n d i sol a t e t h e b a t t e ry n eg a t i ve

cable.

(2 ) Di s e n g a g e t h e r e a r s e a t c u s h i o n l a t c h by p u l l -

i n g u p w a r d on t h e r e l ea s e s t r a p . Ti lt t h e s e a t cu s h -

ion forward.

(3 ) L i f t t h e c a r p e t i n g o n t h e r e a r f l o o r p a n u n d e rthe left end of the seat cushion as required to access

the amplifier.

(4 ) U n p l u g t h e t w o w i r e h a r n e s s c o n n e c t o r s f r o m

the amplifier (Fig. 5).

(5) Remove the four screws that secure the ampli-

f i e r t o t h e r e a r f l o o r p a n .

(6) Remove the amplifier from the vehicle.

(7) Re ve rs e t h e r em ov a l p roce du r es t o i n st a l l .

Ti g h t en t h e a m p l if ie r m ou n t i n g s cr e w s t o 2.8 N m

(25 in. lbs.).

SPEAKER

FRONT DOOR

LOWER


cable.

(2) If the vehicle is so equipped, remove the man-

u a l w i n d ow r eg u la t o r c r a n k h a n d l e w i t h a r em ov a l

tool (Fig. 6).

(3) R e m ov e t h e s cr e w s t h a t s ecu r e t h e d oor t r i m

panel to the inner door panel (Fig. 7) or (Fig. 8).


f la t -bl a d ed t o ol , g e n t l y p r y t h e t r i m p a n e l a w a y f r om

Fig. 4 Radio Connections - Typical

Fig. 5 Amplifier Remove/Install

AMPLIFIER WIRE HARNESS CONNEC-TORSFWDREARFLOOR PANSCREW

Fig. 6 Window Regulator Crank Handle Remove -

Typical

Fig. 7 Front Door Trim Panel Remove/Install -Manual Window

U-NUT DOORTRIM PANELWINDOWCRANKSPACERPUSH-IN FAS-TENER


REMOVAL AND INSTALLATION (Continued)


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t h e d oor a r ou n d t h e p er i me t er t o r el ea s e t h e t r i m

panel retainers.

NOTE: To aid in the removal of the trim panel, startat the bottom of the panel.

(5) L if t t h e d oor t r im pa n el u pw a r d s a n d a w a y

from the door to disengage the top of the panel from

t h e i n n er bel t w e a t h e r s t r i p.

( 6 ) P u l l t h e d o o r t r i m p a n e l a w a y f r o m t h e i n n e r

d oor f a r en ou gh t o a cces s t h e i ns id e d oor l a t ch

r el ea s e a n d l ock l in k a g e r o ds n ea r t h e b a ck of t h e

inside door remote control.

(7) U n sn a p t h e pl a st i c r et a i ner cl ip s f rom t h e

i n s id e d oor r e m ot e con t r o l e n d s of t h e l a t c h r e le a s eand lock l inkage rods, and remove the rod ends from

the inside door remote control .

(8 ) I f t h e v e h i c l e i s s o e q u i p p e d , u n p l u g t h e w i r e

harness connectors from the door power switch mod-

u le or, on t h e d r iv er s id e on l y, t h e p ow e r m ir r or

switch.

(9) R em ov e t h e f r on t d oor t r i m p a n el f r om t h e

vehicle.

(10) R em ov e t h e t w o s cr ew s t h a t s ecu re t h e

s pe a k er t o t h e l ow e r f r on t cor n e r o f t h e i n n er d oor

panel (Fig. 9).

(11) P u l l t h e s pe a k er a w a y f r om t h e i n ne r d oor

p a n e l f a r e n ou g h t o u n p lu g t h e s p ea k e r w i r e h a r n e s s

connector.

(12) Remove the speaker from the door.

(13) Reverse the removal procedures t o insta l l .

UPPER

(1) Remove the front door trim panel as described

under Lower Front Door Speaker, in this group.

(2) R e m ov e t h e on e s cr e w t h a t s ecu r e s t h e d oor

flag trim to the inner door panel (Fig. 10).


f l a t - bl a d e d t o o l , g e n t l y p r y t h e d o o r f l a g t r i m a w a y

fr om t h e in ner d oor t o r elea s e t h e t r im pa n el

retainer.

(4) Un plug the upper speaker w ire ha rness connec-

tor.

(5) Unsnap the speaker from the retainers molded

i n t o t h e ba c k s i d e o f t h e d o o r f l a g t r i m p a n e l .(6) Reverse the removal procedures to instal l .

SOUND BAR

(1) Re mov e t h e s ou n d b a r f r om t h e v eh i cl e a s

described in this group.

(2) F r o m t h e i n si de of t h e s ou n d b a r, s t r a i gh t en

t h e t a bs t h a t s e c u r e t h e s p e a k e r g r i l l e t o t h e s o u n d

bar (Fig. 11).

(3) From the outside of the sound bar, remove the

speaker grille.

Fig. 8 Front Door Trim Panel Remove/Install - PowerWindow

Fig. 9 Front Door Lower Speaker Remove/Install

SPEAKERWIRE HARNESS CONNEC-TORS FWDNUTSCREW

Fig. 10 Front Door Flag Trim Panel Remove/Install




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(4) C a r ef ul ly d r il l ou t t h e r i ve t s t h a t s ecu r e t h e

s pe a k er t o t h e s ou n d ba r .

(5) Remove the speaker from the sound bar.

(6) Reverse the removal procedures to instal l . Use

n e w r i ve t s i n s t a l l ed f r om t h e i n s i d e of t h e s o un d ba r

to secure the speaker.

SOUND BAR

(1) D is con n ect a n d i sol a t e t h e b a t t e ry n eg a t i ve

cable.

(2) If the vehicle is so equipped, remove the cargo

compartm ent-mounted spare t ire.

(3) R em ov e t h e l if t ga t e op en i ng u pp er g a r n is h

m ou l d in g a n d t h e l i f t g a t e p i l la r t r i m p a n e l s . R e fe r t o

Group 23 - Body for the procedures.

(4 ) R e m o v e t h e l e n s f r o m t h e c a r g o l a m p h o u s i n g

(Fig. 12).

(5 ) I f t h e v e h i c l e i s s o e q u i p p e d , r e m o v e t h e r e a r

roof side rai l-mounted assist handles.

(6) R e m ov e t h e s cr e w s t h a t s ecu r e t h e r e a r r oof

side rai l garnish moldings.

(7) R e m ov e t h e l ef t a n d r i gh t r ea r r oof s id e r a i lgarnish moldings.

(8) Remove and discard the two push nut retainers

f r o m t h e s t u d s i n s i d e t h e f r o n t a n d r e a r o f t h e c a r g o

lamp housing.

(9 ) L o w e r t h e s o u n d ba r f a r e n o u g h t o u n p l u g t h e

w i r e h a r n e s s c on n e ct o r s f r om bot h s pe a k er s a n d t h e

cargo lamp.

(10) R e mov e t h e a d h es iv e t a p e t h a t s ecu r es t h e

w i r e h a r n e s s t o t h e i n s i d e o f t h e s o u n d ba r .

(11) Remove the sound bar from the vehicle.

(12) Reverse the removal procedures to install. Use

t w o n e w p us h n u t s on t h e s t u d s i n t h e c a r go l a m p

h ou s in g w h e n r e in s t a l l i n g t h e s ou n d ba r .

ANTENNA

WARNING: ON VEHICLES EQUIPPED WITH AIR-BAGS, REFER TO GROUP 8M - PASSIVE

RESTRAINT SYSTEMS BEFORE ATTEMPTING ANY

STEERING WHEEL, STEERING COLUMN, ORINSTRUMENT PANEL COMPONENT DIAGNOSIS ORSERVICE. FAILURE TO TAKE THE PROPER PRE-

CAUTIONS COULD RESULT IN ACCIDENTAL AIR-BAG DEPLOYMENT AND POSSIBLE PERSONALINJURY.


cable.

(2) R em ov e t h e r i gh t f r on t f en d er i n n er s pl a s h

shield. Refer to Group 23 - Body for the procedures.

(3) R e a ch u n d er t h e r i g h t e n d o f t h e i n s t r u m e n t

panel to unplug the coaxial cable connector (Fig. 13).

Unplug the connector by pull ing i t apart while twist-

i n g t h e m e t a l con n e ct o r h a l ve s. Do n o t p u ll o n t h e

cable.

(4) U n s cr ew t h e a n t en n a m a s t f r om t h e a n t en n a

body (Fig. 14).

(5) R e mov e t h e a n t e n n a ca p n u t a n d a d a p t er u s i n g

an an tenna nut wrench (Special Tool C-4816) (Fig.

15).

(6) L ow e r t h e a n t e n n a b od y a n d ca b l e a s se mb ly

t h r ou g h t h e f e n d er f a r e n ou g h t o a cce ss t h e a n t e n n a

bo d y by r e a c h i n g u p i n t o t h e r e a r o f t h e r i g h t f r o n t

Fig. 11 Sound Bar Speaker Remove/Install - Typical Fig. 12 Sound Bar Remove/Install

WIRE HARNESS STUDS LIFTGATE OPENING UPPERREINFORCEMENTSOUND BARPUSH NUTSLENSFWD

8 F - 1 0 AUDI O SY STEM S XJ



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f en d er w h e el op en i ng b et w e en t h e r ig h t cow l s id e

outer panel and the fender (Fig. 16).(7) Disengage the coaxial cable grommet from the

hole in the right cowl side outer panel .

(8) P u l l t h e coa x i a l ca b l e ou t t h r ou g h t h e r ig h t

cowl side outer panel .

(9) R e m ov e t h e a n t e n n a bod y a n d ca bl e f r om t h e

vehicle.

(10) R ev er s e t h e r e mov a l p r oce d ur e s t o i n s t a l l.

Ti g h t en t h e a n t e n n a ca p n u t t o 8 N m (70 i n . l bs.).

Tighten t he a ntenna mast to 3.3 Nm (30 in. lbs.).

Fig. 13 Antenna Cable Routing

INSTRUMENT PANEL ANTENNA COAXIALCABLE RIGHT-HAND DRIVE FWDLEFT-HAND DRIVEFWDANTENNA COAXIAL CABLEHEATER-A/C HOUSING KICKCOVERINSTRUMENT PANEL

Fig. 14 Antenna Mast Remove/Install - Typical

ANTENNA MAST ADAPTERCAP NUT

Fig. 15 Antenna Cap Nut and Adapter Remove/

Install - Typical

CAP NUTANTENNA ADAPTERTOOL

Fig. 16 Antenna Mounting

NUT MASTRIGHT FRONT FENDERFWDANTENNA BODY AND CABLEGROMMETADAPTER

XJ AUDI O SY STEM S 8 F - 1 1



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EXJ_8F99 jeep xj service manual

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