ACURA RL KA9 1996 Service Repair Manual

YAW RAT E
"SENSOR " indicate s th e voltag e outpu t fro m th e ya w rat e sensor . I t shoul d
indicat e 1.50 0 to 3.50 0 V wit h th e vehicl e stopped .
NOTE : D o no t tr y t o tun e th e ya w rat e senso r unles s instructe d t o b y
America n Honda .
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Picture Diagnosi s
'00 - 0 4 Model s
Start-up procedur e
1 . Tur n th e ignitio n switc h t o AC C (I) , an d the n pres s th e MEN U key on th e dis -
play . Th e mai n men u scree n appears .
2. Pres s an d hol d th e key s i n thi s order : CAN -
CE L key , an d kee p the m pushe d simultaneousl y fo r 5 seconds . Th e displa y
change s t o th e diagnosi s men u screen . T
o pag e 23-39 3
T o pag e 23-39 4
T o pag e 23-39 5
T o pag e 23-39 3
T o pag e 23-39 7
T o pag e 23-39 3
T o pag e 23-39 3
DIAGNOSI S MEN U SCREE N
Touch th e ite m yo u wan t t o check , an d
th e chec k starts .
T o retur n t o th e previou s screen , touc h
th e "RETURN " switc h o n th e diagnosi s
screen.
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Cyclic Dia g
I n thi s test , chec k th e followin g item s repeatedly :
• Navigatio n uni t chec k (Nav i ECU )
• Monito r chec k (excep t switc h test )
T o exi t thi s test , pres s th e CANCE L ke y
In-Lin e Dia g
I n thi s test , yo u can chec k followin g item :
• Syste m link s
• Ca r statu s
• Ya w rat e
Syste m Link s
• Durin g diagnosis , al l o f th e communicatio n line s connectin g th e compo -
nent s ar e show n in yellow .
• I f th e syste m is OK , al l o f th e communicatio n line s connectin g th e compo -
nent s wil l chang e t o green , th e scree n wil l indicat e "OK" , an d a ton e wil l
sound .
• I f ther e i s a proble m in th e system , th e fault y communicatio n lin e wil l
chang e to red , th e scree n wil l indicat e "NG" , an d a ton e wil l sound .
• Th e indicatio n o n th e scree n wil l no t chang e unti l th e ignitio n switc h i s
cycled . Afte r repairin g th e system , tur n th e ignitio n switc h OF F t o rese t
th e system , the n retur n t o th e Diagnosi s Men u screen , an d ru n Syste m
Link s again .
• Th e "AUT O TUNING " i s factory-se t t o "ON" , an d i t shoul d remai n on . I f
yo u fin d it ha s bee n turne d OFF , tur n it bac k ON .
• Th e "TIRE-CA L TUNING " ca n b e used , bu t i t i s no t recommended . Th e
AUT O TUNIN G functio n keep s th e syste m in bette r tune .
Tire-Calibrat e
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Picture Diagnosi s
'00 - 0 1 Model s (cont'd )
Monitor Chec k
RGB Colo r
The thre e primar y color s o f red , gree n an d
blu e mus t b e shown . Touc
h th e ite m yo u wan t t o check , an d
the chec k starts .
Test Patter n
Al l 3 2 color s includin g blac k mus t b e indi -
cate d (includin g th e bac k groun d color) .
Black Raste r
The entir e displa y mus t b e show n i n
black .
Color Chang e
This scree n i s fo r th e manufacture' s us e
only .
Switc h Chec k
Each switc h mus t b e show n o n th e dis -
pla y an d eac h switc h mus t revers e an d
sound , whe n touched .
Whit
e Raste r
Th e entir e displa y mus t b e show n i n
white .
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Unit Chec k
Touch th e ite m yo u wan t t o check , an d th e chec k starts .
NOTE : D o no t us e "Forc e Download" . Thi s comman d is fo r th e manufacturer' s
use only .
Whe n th e connectio n is N G
Chec k fo r a n ope n o r shor t i n th e communicatio n line . I f th e lin e i s OK ,
replac e th e displa y unit .
Whe n th e RO M or RA M is N G
Replac e th e displa y unit .
Thi s scree n is fo r th e manufacturer' s us e only .
NOTE : D o no t touc h th e CL R switch .
Touchin g th e CL R switc h wil l clea r th e syste m history .
Thi s scree n show s th e conditio n o f th e GP S receptio n an d th e vehicl e position .
GP
S Informatio n
Dis
p (Displa y Unit )
Syste m Histor y
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'00 - 0 1 Model s (cont'd )
Car Statu s
Use th e ca r statu s scree n to chec k eac h signal .
I f th e indicatio n doe s no t matc h th e actua l vehicl e status , chec k th e applica -
ble signa l line .
• VS P (vehicl e spee d puls e indication )
OF F whe n vehicl e is no t movin g
ON whe n vehicl e is movin g
• BAC K (revers e indication )
OFF whe n shif t leve r i s in an y positio n othe r tha n revers e
ON whe n shif t leve r i s in revers e
• CH G (chargin g indication )
ON whe n engin e is runnin g an d alternato r i s chargin g
OFF whe n engin e is of f o r alternato r i s no t chargin g
• IL L (illuminatio n indication )
OFF whe n parkin g light s o r headlight s ar e of f
ON whe n parkin g light s o r headlight s ar e o n
Whe n an y ite m is NG , replac e th e navigatio n unit .
Thi s scree n is fo r manufacture' s us e only .
Nav
i EC U (Navigatio n Unit )
Backu p Clea r
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Yaw Rate

"SENSOR" indicates the voltage output from the yaw rate sensor. It should

indicate 1.500 to 3.500 V with the vehicle stopped.

NOTE: Do not try to tune the yaw rate sensor unless instructed to by

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Troubleshooting
'96 - 9 9 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 in th e under-hoo d fuse/rela ybox.
Is th e fus e OK ?
Replace th e fus e an d recheck .NO
NOTE : Reinstal l th e fus e if i t i s OK .YES
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 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 naviga -
tio n uni t connecto r B (8P ) termi -
nal No . 1 an d No . 2 individually .
NAVIGATIO N UNI T CONNECTO R B (8P )
Wire sid e o f femal e terminal s
Repair ope n in th e wir e betwee n
th e under-hoo d (o r under-dash )
fuse/relay bo x an d navigatio nunit.
Is ther e batter y voltage ?NO
YE S
Chec k fo r a n ope n i n th e GN Dcircuit :Check fo r continuit y betwee n th enavigatio n uni t connecto r B (8P )termina l No . 4 an d bod y ground .
I s ther e continuity ?
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) .
YES
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 ).
I s th e diagnosi s men u o f th e
pictur e diagnosi s displayed ?
YESPerfor m th e syste m links .
NO
(T o pag e 23-399 )
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(From pag e 23-398 )
Check th e picture :
Chec k tha t th e blac k pictur e i s
displaye d (onl y bac k ligh t i s ON) .
I s th e blac k pictur e displayed ?
Doe s th e voltag e puls e O V
t o approx . 5 V ? NOTE
: T o check , shiel d th e displa y uni t fro m
th e su n wit h you r hand .
Replac e th e navigatio n unit .
DISPLAY UNI T CONNECTO R (20P )
DIS P BU S (+ )
DIS P BU S (- )
Wir e sid e o f femal e terminal s
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
the affecte d shielde d harness .
Replace th e navigatio n unit .
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 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 .
Are al l check s OK ?
Chec k th e DISPLA Y BU S Signal :
1 . Reconnec t th e navigatio n uni t
connecto r A (20P) .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 .
YES
Replac e th e displa y unit .
YES
NO
DISPLA Y UNI T CONNECTO R (20P )
DISP BU S (+ )
Wir e sid e o f femal e terminal s
DISP BU S (- )
NAVIGATIO N UNI T
CONNECTO R A (20P )
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Troubleshooting
'96 - 9 9 Model s (cont'd )
The pictur e is 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 23-386 ).
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 23-388 ).
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 th e RG B
signa l line :
1. Tur n th e ignitio n switc h off .2. Disconnec t navigatio n uni tconnecto r A (20P) , an d th e
displa y uni t connecto r (20P) .
3 . Chec k fo r continuit y terminal s
between th e navigatio n uni tconnecto r A (20P ) an d th e dis -play uni t connecto r (20P) .
I s ther e continuity ?
NO
YE S
Ther 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 .
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 nterminals o f th e navigatio n uni tconnecto r A (20P) .
I s ther e continuity ?
NOReplac e th e navigatio n unit .
YES
Ther e i s a shor t t o groun d 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 . Navigatio
n Uni t Connecto r A (20P )
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