ACURA RL KA9 1996 Service Repair Manual

6. Check for continuity between the appropriate termi-

nals of navigation unit connector A (20P) and display

unit connector B (20P) based on the missing color(s).

Missing Navigation

color unit connector

A
(20P)

Blue A11

Green A2

Red A1
Display unit

connector B

(20P)

B10,
B20

B10,
B20

B10,
B20

NAVIGATION UNIT CONNECTOR A (20P)

Wire side of female terminals

DISPLAY UNIT CONNECTOR B I20PI

Wire side of female terminals

Is there continuity?

YES—There is a short to body ground in the circuit

between the display unit and the navigation unit.

Replace the affected shielded harness.

NO—Replace the navigation unit. If the problem is

still unresolved, replace the display unit.ProCarManuals.com

Picture ha s lines/othe r issue s
Diagnosti c Check : Monito r Chec k
NOTE :
• Alway s chec k th e connector s fo r poo r connection s o r
loos e terminals .
• Befor e troubleshooting , ge t th e navigatio n syste m
anti-thef t codes .
• Afte r troubleshooting , ente r th e navigatio n syste m
anti-thef t codes .
1. Chec k fo r electroni c aftermarke t accessorie s (passive -
ly hidden ) mounte d nea r th e displa y uni t o r th e navi -
gation unit .
Are there any electronic accessories?
YES—Disabl e th e accessories , an d recheck .
NO—Go t o ste p 2 .
2. Star t u p th e navigatio n picture .
Is the picture scrolling horizontally (left to right or
right to left)?
YES—Chec k fo r a n ope n o r shor t t o groun d i n th e C
SI G wir e fro m navigatio n uni t connecto r A (20P ) ter -
mina l No . 1 2 to displa y uni t connecto r B (20P ) termi -
nal No . 18 . Als o chec k fo r a shor t t o groun d betwee n
display uni t connecto r B termina l No . 1 9 an d termina l
No. 20 .
NO—G o t o ste p 3 .
3. G o int o th e Diagnosti c mod e an d us e "RG B Color "
diagnosti c unde r Monito r Chec k (se e pag e 23-41 ).
Is the picture missing a red, green or blue color?
YES—D o th e troubleshootin g fo r th e pictur e is miss -
ing a red , gree n o r blu e colo r o r ton e (se e pag e 23 -28) .
NO—G o t o ste p 4 .
(cont'd )
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Navigation Syste m
Sympto m Troubleshootin g (cont'd )
4. Tur n th e ignitio n switc h OFF .
5 . Substitut e a known-goo d displa y unit , an d recheck .
Is the picture OK?
YES—Replac e th e displa y uni t (se e pag e 23-54 ).
NO—Replac e th e navigatio n uni t
(se e pag e 23-53 ).
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Navigation Syste m
Sympto m Troubleshootin g (cont'd )
Display uni t button s d o no t wor k
NOTE :
• Alway s chec k th e connector s fo r poo r connection s o r
loos e terminals .
• Befor e troubleshooting , ge t th e navigatio n syste m
anti-thef t codes .
• Afte r troubleshooting , ente r th e navigatio n syste m
anti-thef t codes .
1. Tur n th e ignitio n switc h to AC C (I) .
2. G o int o th e Diagnosti c mod e an d us e "Touc h Panel "
diagnosti c unde r Monito r Chec k (se e pag e 23-41 )
and, i f necessary , "Display " diagnosti c unde r Uni t
Chec k (se e pag e 23-43 ).
Do the buttons work properly?
YES—System is OK .
NO—G o t o ste p 3 .
3. Measur e th e voltag e betwee n bod y groun d an d dis -
play uni t connecto r B (20P ) termina l No . 1 an d No . 2
individually .
DISPLAY UNI T CONNECTO R B (20P )
+B(WHT/YEL ) AC C (WHT/YEL )
Wire sid e o f femal e terminal s
Is there battery voltage?
YES—G o to ste p 4 .
NO—I f th e + B wir e doe s no t hav e voltage , repai r th e
ope n in th e wir e betwee n th e under-hoo d fuse/rela y
box an d th e displa y unit . I f th e AC C wir e doe s no t
hav e voltage , repai r th e ope n in th e wir e betwee n th e
under-das h fuse/rela y bo x an d th e displa y unit .
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- +

BODY

4. Turn the ignition switch OFF.

5. Disconnect the display unit connector B (20P).

6. Check for continuity between display unit connector

B (20P) terminal No. 10 and body ground.

DISPLAY UNIT CONNECTOR B (20P)

Wire side of female terminals

Is there continuity?

YES—Go to step 7.

NO—Repair the open in the wire between the display

unit and body ground (G251).

7. Disconnect the navigation unit connector A (20P).

8. Check for continuity between body ground and dis-

play unit connector B (20P) terminal No. 5 and No. 15

individually.

DISPLAY UNIT CONNECTOR B (20P)

DISP BUS {+)

(BLK)

Wire side of female terminals

Is there continuity?

YES—There is a short to body ground in the circuit

between the display unit and the navigation unit.

Replace the affected shielded harness.

NO—Go to step 9.
9. Check for continuity between display unit connector

B (20P) terminal No. 5 and navigation unit connector

A (20P) terminal No. 10.

DISPLAY UNIT CONNECTOR B (20P)

DISP BUS {+} (BLK)

Wire side of female terminals

Is there continuity?

YES—Go to step 10.

NO—There is an open in the circuit between the dis-

play unit and the navigation unit. Check for poor con-

nections or loose terminals at the display and naviga-

tion units. If a poor connection or loose terminal is

found, replace the affected shielded harness.

(cont'd)ProCarManuals.com

Navigation Syste m
Sympto m Troubleshootin g (cont'd )
10. Chec k fo r continuit y betwee n displa y uni t connecto r
B (20P ) termina l No . 1 5 an d navigatio n uni t connec -
tor A (20P ) termina l No . 20 .
Wir e sid e o f femal e terminal s
Is there continuity?
YES—Replac e th e displa y uni t (se e pag e 23-54 ).
NO—Ther e is a n ope n in th e circui t betwee n th e dis -
pla y uni t an d th e navigatio n unit . Chec k fo r poo r con -
nection s o r loos e terminal s a t th e displa y an d naviga -
tio n units . I f a poo r connectio n o r loos e termina l i s
found , replac e th e affecte d shielde d harness .
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Navigation Syste m
Sympto m Troubleshootin g (cont'd )
GPS ico n is whit e
Diagnosti c Test : Navigatio n Syste m Lin k
NOTE :
• Mak e sur e th e vehicl e i s parke d outsid e an d awa y
from buildings .
• Refe r t o GP S informatio n (se e pag e 23-46 ) fo r real -
tim e satellit e receptio n display .
Befor e assumin g tha t a GP S antenn a receptio n com -
plain t i s hardwar e related , b e awar e o f th e following :
• Th e GP S signa l i s extremel y wea k (abou t on e bil -
liont h th e strengt h o f a radi o broadcas t signa l
receive d b y a radi o antenna )
• I f th e rea r windo w ha s bee n tinte d wit h metalli c
tint, thi s ca n seriousl y degrad e o r bloc k GP S
reception .
• Loos e item s o n th e rea r shel f ca n bloc k satellit e
antenn a reception .
• Aftermarke t device s lik e Lo-Jack , remot e starter s
o r othe r electroni c device s locate d nea r th e navi -
gation uni t o r GP S antenn a ca n potentiall y inter -
fere wit h th e operatio n o f th e navigatio n an d On -
Star systems .
1 . Chec k fo r electroni c aftermarke t accessorie s (possibl y
hidden ) mounte d nea r th e GP S antenn a o r th e navi -
gation unit .
Are there any electronic accessories?
YES—Disabl e th e accessorie s an d recheck ,
NO—G o t o ste p 2 .
2. G o int o th e Diagnosti c mod e an d us e th e "Nav i
Syste m Link " diagnosti c (se e pag e 23-40 ) t o chec k
th e GP S antenna .
Is "GPS Ant" icon red?
YES—Us e th e "Nav i ECU " diagnosti c unde r Uni t
Chec k (se e pag e 23-43 ) t o chec k fo r a kinked , crushed ,
o r disconnecte d GP S antenn a wire . I f ico n i s stil l red ,
replac e th e GP S antenna .
NO—Chec k tha t nothin g is blockin g th e GP S antenn a
locate d unde r th e rea r shel f an d recheck . Substitut e
a known-goo d navigatio n unit , an d recheck .
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Voice guidanc e canno t b e hear d
Diagnosti c Test : Navigatio n Syste m Lin k
NOTE :
• Alway s chec k th e connector s fo r poo r connection s o r
loos e terminals .
• Befor e troubleshooting , writ e dow n th e customer' s
radi o statio n presets , an d ge t th e radi o an d naviga -
tio n syste m anti-thef t codes .
• Afte r troubleshooting , ente r th e radi o an d navigatio n
syste m anti-thef t codes , an d th e radi o statio n presets .
1 . Pres s th e displa y uni t A/ C INF O button , an d selec t
"set-up" .
2 . Chec k th e volum e settin g fo r th e navigatio n system .
Is it set OFF?
YES—Se t th e volum e to a n audibl e level .
NO—G o t o ste p 3 .
3 . Chec k th e radi o operation .
Can you hear the radio?
YES—G o to ste p 4 .
NO—Troubleshoo t the audi o system .
4 . G o int o th e Diagnosti c mod e an d us e th e "Nav i
Syste m Link " diagnosti c (se e pag e 23-40 ) t o chec k
th e radio .
Is "Radio" icon red?
YES—Troubleshoo t the audi o system .
NO—G o t o ste p 5 . Is
there continuity?
YES—Replac e th e affecte d shielde d harness .
NO—G o t o ste p 8 .
(cont'd)
5
. Tur n th e ignitio n switc h OFF .
6. Disconnec t the navigatio n unit connecto r B (14P).
7. Chec k fo r continuit y betwee n bod y groun d an d navi -
gatio n uni t connecto r B (14P ) terminal s No . 5 an d No .
12 individually .
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Navigation Syste m
Sympto m Troubleshootin g (cont'd )
8. Chec k fo r continuit y betwee n navigatio n uni t connec -
tor B (14P ) termina l No . 5 an d th e audi o uni t connec -
tor A (20P ) termina l No . 13 .
NAVIGATIO N UNIT CONNECTO R B (14P>
RG L (+ ) (WHT )
AUDIO UNI T CONNECTO R A (20P )
Wire sid e o f femal e terminal s
Is there continuity?
YES—G o to ste p 9 .
NO—Ther e is a n ope n i n th e circui t betwee n th e navi -
gatio n uni t an d audi o unit . Chec k fo r poo r connec -
tions o r loos e terminal s a t th e audi o an d navigatio n
units. I f a poo r connectio n o r loos e termina l i s found ,
replace th e affecte d shielde d harness .
9. Chec k fo r continuit y betwee n navigatio n uni t connec -
tor B (14P ) termina l No . 1 2 an d th e audi o uni t connec -
tor B (14P ) termina l No . 8 .
NAVIGATIO N UNI T CONNECTO R B (14P )
Wire sid e o f femal e terminal s
Is there continuity?
YES—G o to ste p 10 .
NO—Ther e is a n ope n i n th e circui t betwee n th e navi -
gatio n uni t an d th e audi o unit . Chec k fo r poo r con -
nection s o r loos e terminal s a t th e audi o an d naviga -
tion units . I f a poo r connectio n o r loos e termina l i s
found , replac e th e affecte d shielde d harness .
10. Substitut e a known-goo d audi o unit , an d recheck .
Is the system OK?
YES—Replac e th e audi o unit .
NO—Replac e th e navigatio n uni t
(see pag e 23-53 )
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Voice contro l doe s no t wor k
Diagnosti c Test : Navigatio n Syste m Lin k an d
Functiona l Setu p
NOTE :
• Alway s chec k th e connector s fo r poo r connection s o r
loos e terminals .
• Befor e troubleshooting , writ e dow n th e customer' s
radi o statio n presets , an d ge t th e radi o an d naviga -
tio n syste m anti-thef t codes .
• Afte r troubleshooting , ente r th e radi o an d navigatio n
syste m anti-thef t codes , an d th e radi o statio n presets .
Befor e assumin g tha t a voic e contro l complain t i s
hardwar e related , ensur e tha t th e voic e contro l syste m
i s bein g operate d correctly .
• Mak e sur e yo u ar e o n th e correc t scree n whe n tryin g
t o issu e a voic e command . Fo r instance , th e com -
man d "Fin d th e neares t Italia n Restaurant " onl y
work s o n a Ma p screen . (Se e th e Navigatio n Owner' s
manua l fo r a complet e lis t o f allowe d voic e com -
mand s fo r th e informatio n bein g displayed) .
• Clos e th e window s an d sunroof .
• Se t th e fa n spee d t o lo w (1 o r 2) .
• Adjus t th e ai r flo w fro m th e dashboar d vent s s o tha t
they d o no t blo w agains t th e microphon e o n th e
celling .
• Paus e afte r pressin g th e TAL K button , the n giv e a
voic e comman d in a clear , natura l speakin g voice .
I f th e syste m canno t recogniz e you r command , spea k
louder .
• I f th e microphon e pick s u p voice s othe r tha n yours ,
th e syste m ma y no t interpre t you r voic e command s
correctly .
• I f yo u spea k a comman d wit h somethin g in you r
mouth , o r you r voic e is eithe r to o hig h o r to o husky ,
th e syste m ma y misinterpre t you r command .
1 . G o int o th e Diagnosti c mod e an d us e th e "Mi c Level "
diagnosti c th e unde r Functiona l Setu p (se e pag e 23 -48
t o chec k th e operatio n o f th e TAL K an d BAC K but -
tons.
Are the TALK and BACK buttons operational?
YES—G o to ste p 2 .
NO—Chec k fo r a n ope n o r shor t t o groun d o n naviga -
tio n uni t connecto r B (14P ) termina l No . 10 . 2
. Us e th e "Mi c Level " diagnosti c unde r Functiona l
Setu p (se e pag e 23-48 ) t o chec k th e operatio n o f th e
microphone .
Is the microphone operational?
YES—Chec k th e operatio n o f th e voic e contro l sys -
te m (Se e th e Navigatio n Syste m Owner' s Manual) .
NO—Chec k fo r a loos e o r missin g microphon e assembly .
I f OK , chec k fo r a n ope n o r shor t t o groun d o n navigatio n
uni t connecto r B (14P ) terminal s No . 6 an d No . 14 .
Curso r constantl y leave s roa d
Diagnosti c Test : Ya w Rat e an d Ca r Statu s
1 . Chec k th e GP S ico n o n th e navigatio n picture .
Is the GPS icon white?
YES—D o th e troubleshootin g fo r GP S ico n i s whit e
(see page 23-32)
NO—G o t o ste p 2 .
2 . G o int o th e Diagnosti c mod e an d us e th e "Ya w Rate "
diagnosti c (se e pag e 23-47 ) t o chec k th e ya w rat e
sensor .
3. G o int o th e Diagnosti c mod e an d us e th e "Ca r
Status " diagnosti c (se e pag e 23-45 ) t o chec k th e vehi -
cl e spee d pulse .
Are the yaw rate sensor and vehicle speed pulse OK?
YES—Th e proble m ma y b e normal . Chec k t o se e if
th e proble m occur s i n th e sam e place . I f i t does , th e
proble m coul d b e in th e database . G o to ste p 4 .
NO—I f th e proble m is th e ya w rat e sensor , replac e
the navigatio n uni t (se e pag e 23-53 ). I f th e proble m is
th e vehicl e spee d pulse , troubleshoo t th e vehicl e
spee d signa l circuit .
4 . Substitut e a known-goo d navigatio n uni t an d chec k
t o se e if th e proble m occur s i n th e sam e place .
Doe s the problem occur in the same place?
YES—Th e proble m is in th e database . Repor t th e
proble m accordin g t o th e Navigatio n Syste m
Owner' s Manua l unde r "Reportin g Errors" .
NO—Replac e th e navigatio n uni t
(se e pag e 53 ).
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