1996 ACURA RL KA9 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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