ACURA RL KA9 1996 Service Repair Manual

Display uni t button s d o no t wor k
Chec k fo r a n ope n in th e powe rsource circuit :1. Tur n th e ignitio n switc h O N(II).2. Measur e th e voltag e betwee n
bod y groun d an d th e displa y
uni t connecto r (20P ) termina l
No . 1 an d No . 2 individually .
I s ther e batter y voltage ?
NORepai r ope n in th e wir e betwee nthe under-hoo d (o r under-dash )fuse/relay bo x an d displa y unit .
Chec k fo r a n ope n i n th e GN D
circuit :1. Tur n th e ignitio n switc h OFF .
2 . Chec k fo r continuit y betwee n
th e displa y uni t connecto r
(20P ) termina l No . 1 0 an d
bod y ground .
I s ther e continuity ?
NO• Repai r ope n in th e wir e betwee n
th e displa y uni t an d bod y
ground .• Repai r poo r groun d (G251) .
Check th e DISPLA Y BU S circuit :
1 . Disconnec t th e navigatio n
uni t an d displa y uni t connec -
tors .
2 . Chec k fo r continuit y betwee n
th e displa y uni t connecto r
(20P ) termina l No . 5 an d th e
navigatio n uni t connecto r A
(20P ) termina l No . 4 . Ther e
shoul d b e continuity .
3 . Chec k fo r continuit y betwee n
th e displa y uni t connecto r
(20P ) termina l No . 1 5 an d th e
navigatio n uni t connecto r A
(20P ) termina l No . 14 . Ther e
shoul d b e continuity .
4 . Chec k fo r continuit y betwee n
th e sam e terminal s an d bod y
ground . Ther e shoul d b e n o
continuity .
YES
Are al l check s OK ?
YES
Replac e th e displa y unit .
NOTher e is a n ope n o r shor t t o bod y
groun d betwee n th e displa y uni t
an d th e navigatio n unit . Replac e
th e affecte d shielde d harness . Wir
e sid e o f femal e terminal s
DISPLA
Y UNI T CONNECTO R (20P )
DISPLA
Y UNI T CONNECTO R (20P )
ACC
Wir e sid e o f femal e terminal s
DISPLA Y UNI T CONNECTO R (20P )
Wir e sid e o f femal e terminal s
DIS
P BU S (+ )
DIS P BU S (- )
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Troubleshooting
'96 - 9 9 Model s (cont'd )
Satellite mar k i n th e GP S mar k is no t indicate d
Check fo r accessories :
Chec k fo r electroni c aftermarke t
accessorie s mounte d nea r th e GP S
antenn a o r th e navigatio n uni t
Disable th e accessorie s an d
recheck .Are ther e an y electroni caccessories ?
NO
YE S
Pictur e diagnosis :
Perfor m th e NAV I EC U chec k
under pictur e diagnosi s (se epage 23-389 ).
I s "NG " indicated ?
NO
• Chec k tha t nothin g i s blockin g
th e GP S antenn a locate d unde r
th e packag e shelf .
• Rechec k wher e nothin g ca n
block th e GP S satellit e signal .
Repair a s indicate d b y th e NAV I
EC U check .
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Audio drivin g instruction s can' t b e hear d
Chec k th e audi o drivin g instruc -
tion s se t up :
1 . Pus h th e MEN U key .
2 . Chec k th e audi o drivin g instruc -
tion s volum e setting .
Is i t se t t o OFF ?Set th e volum e t o a n audibl e
level .YES
NO
Chec k th e AUDI O G U circuit :
1 . Disconnec t th e navigatio n uni t
an d audi o uni t connectors .
2 . Chec k fo r continuit y betwee n
the audi o uni t connecto r C(12P ) termina l No . 4 an d th e
navigatio n uni t connecto r A
(20P ) termina l No . 7 . Ther e
shoul d b e continuity .
3 . Chec k fo r continuit y betwee n
th e audi o uni t connecto r C
(12P ) termina l No . 4 an d bod y
ground . Ther e shoul d b e n ocontinuity .
Is th e circui t OK ?
YES
NOTher e is a n ope n o r shor t t o bod y
groun d betwee n th e audi o uni t
an d th e navigatio n unit . Replac e
th e affecte d shielde d harness .
Chec k th e audi o unit :
Substitut e a known-goo d audi o
uni t an d recheck .
I s th e syste m OK ?
NOReplac e th e navigatio n unit .
Replac e th e audi o unit .
YES
AUDI O UNI T CONNECTO R C (12P )
AUDI O UNI T CONNECTO R C (12P )
Wir e sid e o f femal e terminal s
NAVIGATIO
N UNI T
CONNECTO R A (20P )
Wir e sid e o f femal e terminal s
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Troubleshooting
'00 - 0 1 Model s
No pictur e is show n o n th e displa y
Check th e + B fuse :
Chec k th e BAC K UP/RADI O (7. 5 A )
fus e i n th e under-hoo d fuse/rela y
box.
Is th e fus e OK ?
Replace th e fus e an d recheck .
NOTE : Reinstal l th e fus e if i t i s OK .NO
YE S
Chec k th e AC C fuse :
Chec k th e ACC/RADI O (1 0 A ) fus e
i n th e under-das h fuse/rela y box .
I s th e fus e OK ?
NOReplac e th e fus e an d recheck .
NOTE : Reinstal l th e fus e if i t i s OK .
YES
Chec k fo r a n ope n i n th e powe r
sourc e circuit :
1. Tur n th e ignitio n switc h O N(II).2. Measur e th e voltag e betwee nbody groun d an d th e naviga -tion uni t connecto r C (8P ) ter -mina l No . 1 an d No . 2 individ -ually.
NAVIGATIO N UNI T CONNECTO R C (8P )
Wire sid e o f femal e terminal s
Is ther e batter y voltage ?NORepai r ope n i n th e wir e betwee n
th e under-hoo d (o r under-dash )
fuse/rela y bo x an d navigatio n
unit.YES
Chec k fo r a n ope n i n th e GN D
circuit :
Chec k fo r continuit y betwee n th e
navigatio n uni t connecto r C (8P )termina l No . 4 an d bod y ground .
Is ther e continuity ?
YES
NO• Repai r ope n in th e wir e betwee n
th e navigatio n uni t an d bod y
ground .
• Repai r poo r groun d (G603) .
Force d startin g o f display :
1. Tur n th e ignitio n switc h OFF .2. Perfor m force d startin g o f dis -
pla y (se e pag e 23-412 ).
Is th e diagnosi s men u o f th epictur e diagnosi s displayed ?
YESPerfor m th e syste m links .
NO
(T o pag e 23-405 )
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(From pag e 23-404 )
Check th e picture :Check tha t th e blac k pictur e i s
displaye d (onl y bac k ligh t i s ON) . NOTE
: T o check , shiel d th e displa y uni t fro m
th e su n wit h you r hand .
I s th e blac k pictur e displayed ?
YESReplac e th e navigatio n unit .
NO
Chec k th e DISPLA Y BU S circuit :1. Disconnec t th e navigatio n
uni t an d displa y uni t connec -
tors.2. Chec k fo r continuit y betwee n
th e displa y uni t connecto r
(20P ) termina l No . 5 an d th e
navigatio n uni t connecto r B
(16P ) termina l No . 7 . Ther e
shoul d b e continuity .
3 . Chec k fo r continuit y betwee n
th e displa y uni t connecto r
(20P ) termina l No . 1 5 an d th e
navigatio n uni t connecto r B
(16P ) termina l No . 15 . Ther e
shoul d b e continuity .
4 . Chec k fo r continuit y betwee n
th e sam e terminal s an d bod y
ground . Ther e shoul d b e n o
continuity .
Doe s th e voltag e puls e O V
t o approx . 5 V ?
NOReplac e th e navigatio n unit .
YES
Replac e th e displa y unit . Wir
e sid e o f femal e terminal s
DISPLAY UNI T CONNECTO R (20P )
DISPLA Y UNI T CONNECTO R (20P )
Wir e sid e o f femal e terminal s
NAVIGATIO
N UNI T
CONNECTO R B (16P )
DISP BU S (- ) DIS
P BU S (+ )
Ther e is a n ope n o r shor t t o bod ygroun d betwee n th e displa y uni t
an d th e navigatio n unit . Replac e
the affecte d shielde d harness .
Are al l check s OK ?NO
YE S
Chec k th e DISPLA Y BU S Signal :1. Reconnec t th e navigatio n uni tconnector B (16P) .2. Chec k fo r voltag e betwee n
bod y groun d an d th e displa y
uni t connecto r (20P ) terminal s
No. 5 an d No . 1 5 individually .
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Troubleshooting
'00 - 0 1 Model s (cont'd )
The pictur e i s missin g a colo r o r ton e
RGB colo r check :1. Perfor m th e start-u p proce -
dur e fo r Pictur e Diagnosi s
(se e pag e 23-392 ).
2 . Touc h th e Monito r Chec k but -
to n the n pres s th e RG B Colo r
butto n (se e pag e 23-394 ).
Ar e th e Red , Green , an d Blu e
colore d circle s shown ? Touc
h th e retur n button . Touc h
th e colo r chang e button , the n
touc h th e Defaul t butto n to restor e
th e standar d colo r settings .
YES
NO
Chec k fo r a n ope n i n the RGB
signa l line :
1 . Tur n th e ignitio n switc h off .
2 . Disconnec t navigatio n uni t
connecto r A (12P) , an d th e
displa y uni t connecto r (20P) .
3 . Chec k fo r continuit y terminal s
betwee n th e navigatio n uni t
connecto r A (12P ) an d th e dis -
pla y uni t connecto r (20P) .
I s ther e continuity ?
NOTher e i s a n ope n i n th e circui t
betwee n th e navigatio n uni t an d
th e displa y unit . Replac e th e
affecte d shielde d harness .
YES
Chec k fo r a shor t t o bod y groun d
i n th e RG B signa l line :
Chec k fo r continuit y betwee n
terminal s o f th e navigatio n uni t
connecto r A (12P) .
Is ther e continuity ?
Replace th e navigatio n unit .NO
YE S
Navigatio n Uni t Connecto r A (12P )
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Display uni t button s d o no t wor k
Chec k fo r a n ope n in th e powe r
sourc e circuit :
1 . Tur n th e ignitio n switc h O N
(II).2. Measur e th e voltag e betwee n
bod y groun d an d th e displa y
uni t connecto r (20P ) termina l
No . 1 an d No . 2 individually .
I s ther e batter y voltage ?
Are al l check s OK ?
Repai r ope n in th e wir e betwee n
th e under-hoo d (o r under-dash )
fuse/rela y bo x an d displa y unit .
NO• Repai r th e ope n i n th e wir e
betwee n th e displa y uni t an d
bod y ground .• Repai r poo r groun d (G251) .
Wire sid e o f femal e terminal s
DISPLA Y UNI T CONNECTO R (20P )
DIS P BU S (+ )
Ther e is a n ope n o r shor t t o bod ygroun d betwee n th e displa y uni t
an d th e navigatio n unit . Replac e
th e affecte d shielde d harness .
Chec
k th e DISPLA Y BU S circuit :
1 . Disconnec t th e navigatio n
uni t an d displa y uni t connec -
tors .
2 . Chec k fo r continuit y betwee n
th e displa y uni t connecto r
(20P ) termina l No . 5 an d th e
navigatio n uni t connecto r B
(16P ) termina l No . 7 . Ther e
shoul d b e continuity .
3 . Chec k fo r continuit y betwee n
the displa y uni t connecto r(20P) termina l No . 1 5 an d th e
navigatio n uni t connecto r B
(16P ) termina l No . 15 . Ther e
should b e continuity .4. Chec k fo r continuit y betwee n
th e sam e terminal s an d bod y
ground . Ther e shoul d b e n o
continuity .
Chec
k fo r a n ope n i n th e GN D
circuit :1. Tur n th e ignitio n switc h OFF .
2 . Chec k fo r continuit y betwee n
th e displa y uni t connecto r
(20P ) termina l No . 1 0 an d
bod y ground .
I s ther e continuity ?
YES
Replac e th e displa y unit .
YES
NO
Wir e sid e o f femal e terminal s
DISPLA
Y UNI T CONNECTO R (20P )
DIS P BU S (+ )
DIS P BU S (- )
Wir
e sid e o f femal e terminal s
DISP BU S (- )
NAVIGATIO N UNI TCONNECTO R B (16P )DISP BU S (+)
DIS
P BU S (- )
DISPLA Y UNI T CONNECTO R (20P )
ACC
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Troubleshooting
'00 - 0 1 Model s (cont'd )
Satellite mar k in th e GP S mar k is no t indicate d
Check fo r accessories :Check fo r electroni c aftermarke t
accessorie s mounte d nea r th e GP S
antenn a o r th e navigatio n uni t
Ar e ther e an y electroni c
accessories ?Disable th e accessorie s an drecheck .
YES
NO
Pictur e diagnosis :
Perfor m th e Syste m Link s chec k
unde r pictur e diagnosi s (se e
page 23-393 ).
• Chec k tha t nothin g i s blockin g
th e GP S antenn a locate d unde r
th e packag e shelf .
•Rechec k wher e nothin g ca n
bloc k th e GP S satellit e signal .
NOIs "NG " indicated ?
Repai r a s indicate d b y th e Syste m
Links check .
YES
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Audio drivin g instruction s canno t b e hear d
Chec k th e audi o drivin g instruc -
tion s se t up :
1 . Pus h th e displa y uni t MEN U
key , an d selec t "set-up" .
2 . Chec k th e audi o drivin g
instructio n volum e setting .
Is i t se t t o OFF ?YES
NO
Se t the volum e t o a n audibl e
level .
Chec k fo r a shor t t o bod y groun d
i n th e R G circuit :
1 . Tur n th e ignitio n switc h OFF .
2 . Disconnec t th e navigatio n
uni t connecto r B (16P ) an d
audi o uni t connecto r C (12P) .
3 . Chec k fo r continuit y betwee n
bod y groun d an d navigatio n
uni t connecto r B (16P ) termina l
No. 9 an d No . 1 0 individually .
Is ther e continuity ? Ther
e is a shor t t o bod y groun d
betwee n th e audi o uni t an d th e
navigatio n unit . Replac e th e
affecte d shielde d harness .
YES
NO
Chec k fo r a n ope n in th e R G L +circuit :Check fo r continuit y betwee n th e
navigatio n uni t connecto r B (16P )
termina l No . 9 an d th e audi o uni tconnecto r C (12P ) termina l No . 4 .
I s ther e continuity ?
NOTher e i s a n ope n betwee n th e
audi o uni t an d the navigatio n
unit . Replac e th e affecte d shielde d
harness .YES
Chec k fo r a shor t t o bod y groun d
i n th e MUT E circuit :
1 . Tur n th e ignitio n switc h OFF .
2 . Disconnec t th e navigatio n
unit connecto r B (16P ) an daudi o uni t connecto r C (12P) .
3 . Chec k fo r continuit y betwee n
bod y groun d an d navigatio n
uni t connecto r B (16P ) termina l
No. 3 .
Is ther e continuity ?
NO
(T o pag e 23-410 )
YESRepai r shor t t o bod y groun d in
th e wir e betwee n th e navigatio n
uni t an d th e audi o unit . Wir
e sid e o f femal e terminal s
NAVIGATIO
N UNI T CONNECTO R B (16P )
MUT E
Wir
e sid e o f femal e terminal s
AUDI
O UNI T CONNECTO R C (12P )
NAVIGATIO
N UNI T CONNECTO R B (16P )
Wir
e sid e o f femal e terminal s
NAVIGATIO
N UNI T CONNECTO R B (16P )
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(To pag e 23-411 )
YES
Is ther e continuity ?NORepai r ope n in th e wir e betwee n
th e navigatio n uni t an d th e audi o
unit .
Chec
k fo r a n ope n i n th e AM P
S W +B circui t (audi o uni t side) :
Chec k fo r continuit y betwee n th e
navigatio n uni t connecto r A (12P )
termina l No . 8 an d th e audi o uni t
connecto r A (16P ) termina l No . 6 .
I
s ther e continuity ? Repai
r shor t t o bod y groun d in
th e wir e betwee n th e navigatio n
unit, th e audi o uni t an d th eamplifie r unit .
YES
NO
Chec k fo r a shor t t o bod y groun d
i n th e AM P S W +B circuit :
1 . Disconnec t th e navigatio n
uni t connecto r A (12P) , th e
audi o uni t connecto r A (16P )
an d th e amplifie r uni t connec -
tor B (12P) .2. Chec k fo r continuit y betwee n
th e navigatio n uni t connecto r
A (12P ) termina l No . 8 an d
bod y ground .
I
s ther e continuity ? Ther
e i s a n ope n betwee n th e
audi o uni t an d th e navigatio n
unit . Replac e th e affecte d shielde d
harness .
Check fo r a n ope n in th e GN D R G
circuit :
Chec k fo r continuit y betwee n th e
navigatio n uni t connecto r B (16P )
termina l No . 1 0 an d audi o uni t
connecto r C (12P ) termina l No . 10 .
NO
YE S
Repai r ope n in th e wir e betwee n
th e navigatio n uni t an d th e
audi o unit .NOIs ther e continuity ?
YES
Chec k fo r a n ope n in th e MUT Ecircuit :Check fo r continuit y betwee n th e
navigatio n uni t connecto r B (16P )
termina l No . 3 an d th e audi o uni t
connecto r C (12P ) termina l No . 7 .
(Fro
m pag e 23-409 )
'00 - 0 1 Model s (cont'd )
Troubleshootin g
NAVIGATION UNI T CONNECTO R B (16P )
MUT E
AUDI O UNI T CONNECTO R C (12P )
MUT E
Wir e sid e o f femal e terminal s
NAVIGATIO N UNI T CONNECTO R B (16P )
AUDI O UNI T CONNECTO R C (12P )
NAVIGATIO N UNI T CONNECTO R A (12P )
Wir
e sid e o f femal e terminal s
GND R G
Wir e sid e o f femal e terminal s
NAVIGATIO N UNI T CONNECTO R A (12P )
AUDI O UNI T
CONNECTO R A (16P )AMP S W +B
AM P S W +B
Wir e sid e o f femal e terminal s
AMP S W +B
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