relay ACURA RL KA9 1996 Service Manual Online

VSA Activation Indicator Does Not Come On

Does the brake system indica-

tor come on?

Check the VSA activation indica-

tor:

1. Turn the ignition switch OFF.

2. Check the VSA activation indi-

cator bulb in the gauge assem-

bly.

Is the bulb OK?

Check the VSA control unit:

1. Disconnect the VSA control

unit 42P connector.

2. Turn the ignition switch ON (II).

3. Connect the VSA control unit

42P connector terminal No. 7

and body ground with a

jumper wire.

Does the VSA activation

indicator come on?

Check the gauge assembly:

Connect the gauge assembly 22P

connector terminal No. 2 and

body ground with a jumper wire.

Does the VSA activation

indicator come ON?

Repair open in the wire between

the gauge assembly and the VSA

control unit.
Gauge relay stuck OFF.

Blown METER (15 A) fuse in the

under-hood fuse/relay box.

Blown METER (7.5 A) fuse in

the under-dash fuse/relay box.

Repair open in the wire between

the METER (15 A) fuse and the

gauge assembly.

Repair open in the wire between

the METER (7.5 A) fuse and body

ground.

Replace the under-hood fuse/

relay box or under-dash fuse/

relay box. (Open circuit inside

the
box.)

Replace the VSA activation indi-

cator bulb.
VSA CONTROL UNIT 42P CONNECTOR

JUMPER

WIRE

Check for loose terminals in the

VSA control unit 42P connector.

If necessary, substitute a known-

good VSA modulator-control

unit, and recheck.

JUMPER

WIRE
Wire side of female terminals

GAUGE ASSEMBLY 22P CONNECTOR

Wire side of female terminals

Check for loose terminals in the

gauge assembly 22P connector.

If the connector is OK, replace

the printed circuit board in the

gauge assembly.ProCarManuals.com

Troubleshooting
DTC 55 : Su b Throttl e Moto r Fail-saf e Rela y
Chec k th e TC S (2 0 A ) fus e i n th eunder-hoo d fuse/rela y box , an d
reinstal l th e fus e if i t i s OK .
I s th e fus e OK ?
Chec k th e fail-saf e rela y i n th e
under-hoo d rela y bo x C , an d
leav e th e rela y remove d (se e
sectio n 23 ).
I s th e rela y OK ?
Chec k fo r a shor t t o bod y groun din th e ST M FS R circuit :
1 . Disconnec t th e VS A converte r
uni t 26 P connector .
2 . Chec k fo r continuit y betwee n
termina l No . 1 2 an d bod y
ground .
I s ther e continuity ?
Chec k fo r a shor t t o powe r i n th e
+B-ST M circuit :
1 . Tur n th e ignitio n switc h O N
(II).2. Measur e th e voltag e betwee n
th e VS A converte r uni t 26 P
connecto r termina l No . 1 4
an d bod y ground .
I s ther e batter y voltage ?
Chec k fo r a n ope n i n the STM
FSR circuit :1. Tur n th e ignitio n switc h OFF .
2 . Reinstal l th e fail-saf e relay .
3 . Tur n th e ignitio n switc h O N
(II).4. Measur e th e voltag e betwee n
th e VS A converte r uni t 26 P
connecto r termina l No . 1 2
an d bod y ground .
I s ther e batter y voltage ?
(To pag e 19-235 )
Replac e th e fuse , an d recheck . I f
th e fus e i s blown , chec k fo r a
shor t t o bod y groun d in thi s fus e
circuit . I f th e circui t i s OK ,
replac e th e VS A converte r unit .
Replac e th e fail-saf e relay .
VSA CONVERTE R UNI T 26 P CONNECTO R
Wire sid e o f femal e terminal s
Repair shor t t o bod y groun d in
th e wir e betwee n th e su b throt -
tl e moto r fail-saf e rela y an d th e
VS A converte r unit .
Repai r shor t t o powe r i n th e
wir e betwee n th e su b throttl e
moto r fail-saf e rela y an d th e VS A
converte r unit .
Repai r ope n in th e wir e betwee n
th e su b throttl e moto r fail-saf e
rela y an d th e VS A converte r unit .
ProCarManuals.com

Troubleshooting
DTC 96 , 97 : TC S Contro l Valv e Actuato r
Check th e TC S (20A ) fus e i n th e
under-hoo d fuse/rela y box , an d
reinstal l th e fus e if i t i s OK .
I s th e fus e OK ?
Chec k th e EC U (20A ) fus e i n th eunder-das h fus e rela y box , an d
reinstal l th e fus e if i t i s OK .
I s th e fus e OK ?
Chec k th e su b throttl e moto r fail -
saf e rela y i n th e under-hoo d
rela y bo x C , an d leav e th e fail -
saf e rela y remove d (se e
section 23 ).
Is th e rela y OK ?
Chec k fo r a n ope n i n th e su b
throttl e moto r fail-saf e rela y + B
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 su bthrottl e moto r fail-saf e rela y4P connecto r terminal s No . 2an d No . 4 individually .
Is ther e batter y voltage ?
Chec k fo r a shor t t o bod y groun d
in th e su b throttl e moto r fail-saf erelay circuit :1. Tur n th e ignitio n switc h OFF .2. Disconnec t th e VS A converte runit 26 P connector .3. Chec k fo r continuit y betwee nbody groun d an d th e VS Aconverte r uni t 26 P connecto r
terminal s No . 1 2 an d No . 1 4
individually .
I s ther e continuity ?
(To pag e 19-263 )
Replace th e fus e an d recheck .
I f th e fus e i s blown , chec k fo r a
shor t t o bod y groun d in thi s fus e
circuit .
Replac e th e fus e an d recheck .
I f th e fus e i s blown , chec k fo r a
shor t t o bod y groun d in thi s fus e
circuit .
Replac e th e su b throttl e moto rfail-saf e relay .SUB THROTTL E MOTO R FAIL-SAF ERELAY 4 P CONNECTO R
Repair ope n in th e wir e betwee n
th e su b throttl e moto r fail-saf e
relay an d TC S (20A ) fus e o r EC U(20A ) fuse .
Wire sid e o f femal e terminal s
VS A CONVERTE R UNI T 26 P CONNECTO R
Wir e sid e o f femal e terminal s
Repai r shor t t o bod y groun d i n
th e wir e betwee n th e su b throt -
tl e moto r fail-saf e rela y an d th e
VS A converte r unit .
ProCarManuals.com

Troubleshooting
Symptom
Water leak s
Wind nois e
Moto r nois e
Glas s moves , bu t glas s dos s no t sto p tem -
poraril y (betwee n th e full y ope n positio n an d
the full y close d position )
Glas s doe s no t move , bu t moto r turn s
Glas s doe s no t mov e an d moto r doe s no t tur n
(glas s ca n b e move d wit h moonroo f wrench ) Probabl
e Caus e
1.
2 .
3.
4 .
1.
1 .
2 .
3.
1.
2 .
3.
1.
2 .
3.
4 .
1.
2 .
3.
4 .
5.
Clogge d drai n tube .
Ga p betwee n glas s weatherstri p an d roo f panel .
Defectiv e o r improperl y installe d glas s weatherstrip .
Ga p betwee n drai n sea l an d roo f panel .
Excessiv e clearanc e betwee n glas s weatherstri p an d roo f panel .
Loos e motor .
Wor n gea r o r bearing .
Cabl e assembl y deformed .
Contro l uni t connecto r no t connecte d properly .
Defective limi t switch .
Defectiv e contro l unit .
Clutc h ou t o f adjustment .
Foreig n matte r stuc k betwee n guid e rai l an d slider .
Inne r cabl e loose .
Cabl e assembl y no t attache d properly .
Blow n fuse .
Fault y switch .
Batter y ru n down .
Defectiv e motor .
Fault y relay .
Glass Heigh t Adjustmen t
The roo f pane l shoul d b e eve n wit h th e glas s weather -
strip, t o withi n 1. 7 m m (0.0 7 in. ) al l th e wa y
around . I f not , ope n th e glas s fully , and :
GLAS S WEATHERSTRI P
• ROO F PANE L GLAS
S
1. Remov e th e bracke t cover .
2 . Loose n th e nuts , an d instal l th e shim s betwee n th e
glas s fram e an d glas s bracke t a s shown .
Shi m thickness : Max . 2 m m (0.0 8 in. )
3 . Repea t o n opposit e sid e if necessary .
6 x 1. 0 m m9 N- m (0. 9 kgf-m ,
7 Ibf-ft )
PLUG BRACKE
T
COVE R
6 x 1. 0 m m9 N- m (0. 9 kgf-m ,
7 Ibf-ft )
Forwar d
1.7 m m
(0.07 in. )
SHIMGLAS SBRACKE TSHIM
ProCarManuals.com

Wiring/Connector Location s
RADIATOR FA N RELA Y
(Locate d i n th e under-hoo d rela y bo x C )
Test , pag e 22-6 4
RADIATO R FA N MAI N RELAY ,
CONDENSE R FA N RELAY ,
COMPRESSO R CLUTC H RELA Y
(Locate d i n th e under-hoo d rela y bo x A )
Test , pag e 22-6 4
RIGH T ENGIN E
COMPARTMEN T
WIR E HARNES S
A/ C PRESSUR E SWITC H
CONNECTO R
RADIATO R FA N
CONNECTO R
OUTSID E AI R TEMPERATUR E SENSO R
Replacement , pag e 22-6 1
Test , pag e 22-6 1 FA
N CONTRO L UNI T
(Locate d behin d th e PC M cover )
PCM COVE R
LEFT ENGIN E
COMPARTMEN T
WIR E HARNES S
COMPRESSO R CLUTC H
CONNECTO R
CONDENSE R FA N CONNECTO R
ProCarManuals.com

Troubleshooting
Blower Moto r
Self-diagnosi s indicato r ligh t G come s on : A proble m in th e blowe r moto r circuit .
The spee d o f th e blowe r moto r i s controlle d b y signal s sen t fro m th e climat e contro l unit .
Blowe r moto r doe s no t ru n a t all .
Self-diagnosi s circui t chec k indi -
cate s a proble m in th e blowe r
moto r circuit .
Chec k th e No . 3 7 (4 0 A ) fus e in th e
under-hoo d fuse/rela y box , an d
th e No . 3 (7. 5 A ) fus e in th e under -
das h fuse/rela y box .
Ar e th e fuse s OK ?
Chec k th e blowe r moto r inpu t
and outpu t circuit :1. Connec t th e No . 2 termina l o f
th e blowe r moto r 2 P connec -
tor t o bod y groun d wit h ajumpe r wire .
2 . Tur n th e ignitio n switc h O N (II) .
Doe s th e blowe r moto r run ?
Chec k th e blowe r motor :
1 . Disconnec t th e jumpe r wir e
an d th e blowe r moto r 2 P con -
nector .
2. Measur e th e voltag e betwee n
th e No . 1 termina l an d bod y
ground .
I s ther e batter y voltage ?
Chec k th e blowe r moto r relay :
1 . Tur n th e ignitio n switc h OFF .
2 . Remov e th e blowe r moto r
relay , an d tes t i t (se e pag e
22-64 ).
T o pag e 22-3 3 Replac
e th e fuse(s) , an d recheck .
BLOWER MOTO R 2 P CONNECTO R
JUMPERWIRE
To pag e 22-3 1 Wir
e sid e o f femal e terminal s
Replac e th e blowe r motor .
ProCarManuals.com

From pag e 22-3 0
Chec k th e blowe r moto r hig h
relay :1. Tur n th e ignitio n switc h OFF ,and disconnec t th e jumpe r
wire .
2 . Remov e th e blowe r moto r
hig h relay , an d tes t i t (se e
page 22-64 ).
Is th e rela y OK ?
Chec k fo r a n ope n in th e wire :
1 . Connec t th e No . 5 termina l o f
th e blowe r moto r hig h rela y
5 P connecto r t o bod y groun d
wit h a jumpe r wire .
2 . Tur n th e ignitio n switc h O N (II) .
Doe s th e blowe r moto r run ?
I s ther e batter y voltage ?
Chec k fo r a n ope n in th e wire :
1. Tur n th e ignitio n switc h OFF .2. Chec k fo r continuit y betwee nthe No . 4 termina l o f th eblowe r moto r hig h rela y 5 P
connecto r an d bod y ground .
I s ther e continuity ?
To pag e 22-3 2
Replac e th e blowe r moto r hig hrelay .
BLOWE R MOTO R HIG H RELA Y 5 P CONNECTO R
Repair ope n in th e wir e betwee n
th e blowe r moto r an d th e blowe r
moto r hig h relay . Wir
e side of femal e terminal s
Repai r ope n in th e wir e betwee n
th e No . 3 fus e an d th e blowe r
moto r hig h relay .
Chec k fo r a n ope n i n th e wir e
betwee n th e blowe r moto r hig h
rela y an d bod y ground . I f th e wir e
is OK , chec k fo r poo r groun d a tG40 1 an d G402 .
Chec
k fo r a n ope n in th e wire :
1 . Tur n th e ignitio n switc h OFF ,
an d disconnec t th e jumpe r
wire .
2 . Tur n th e ignitio n switc h O N (II) .
3 . Measur e th e voltag e betwee n
th e No . 3 termina l o f th e
blowe r moto r hig h rela y 5 P
connecto r an d bod y ground .
ProCarManuals.com

Troubleshooting
Blower Moto r (cont'd )
From pag e 22-3 1 BLOWE
R MOTO R HIG H RELA Y 5P CONNECTO R
Wir e sid e o f femal e terminal s
Chec k fo r a n ope n in th e wire :
1 . Remov e th e climat e contro l
uni t (se e pag e 22-55 ), an d dis -
connect the 8 P an d 20 P con -
nectors .2. Chec k fo r continuit y betwee n
th e No . 8 termina l o f th e 8 P
connecto r an d th e No . 5 ter -
mina l o f th e blowe r moto r
hig h rela y 5 P connector .
I s ther e continuity ? Repai
r ope n in th e wir e betwee n
th e climat e contro l uni t an d th e
blowe r moto r hig h relay . CLIMAT
E CONTRO L UNI T 8 P CONNECTO R
Wir e sid e o f femal e terminal s
Chec k fo r a n ope n in th e wire :
Chec k fo r continuit y betwee n th e
No . 1 3 termina l o f th e 20 P connec -
to r an d th e No . 1 termina l o f th e
blowe r moto r hig h rela y 5 P con -
nector .
CLIMAT E CONTRO L UNI T 20 P CONNECTO R
Wir e sid e o f femal e terminal s
I s ther e continuity ? Repai
r ope n in th e wir e betwee n
th e climat e contro l uni t an d th e
blowe r moto r hig h relay .
Chec k fo r loos e wire s o r poo r con -
nection s a t th e climat e contro l
uni t 8 P an d 20 P connector s an d a t
th e blowe r moto r hig h rela y 5 P
connector . I f th e connection s ar e
good , substitut e a known-goo d
climat e contro l unit , an d recheck .
I f th e symptom/indicatio n goe s
away , replac e th e origina l climat e
contro l unit .
ProCarManuals.com

From pag e 22-3 0
I s th e rela y OK ?
Replace th e blowe r moto r relay .
BLOWE R MOTO R RELA Y 5 P CONNECTO R
Check fo r a n ope n in th e wire :
Measur e th e voltag e betwee n th e
No . 5 termina l o f th e blowe r
moto r rela y 5 P connecto r an d
bod y ground .
I s ther e batter y voltage ? Repai
r ope n in th e wir e betwee n
th e No . 3 7 fus e an d th e blowe r
moto r relay . Wir
e sid e o f femal e terminal s
Chec k fo r a n ope n in th e wire :
1 . Tur n th e ignitio n switc h O N (II) .
2 . Measur e th e voltag e betwee n
th e No . 3 termina l o f th e blow -
e r moto r rela y 5 P connecto r
an d bod y ground .
I s ther e batter y voltage ? Repai
r ope n in th e wir e betwee n
th e No . 3 fus e an d th e blowe r
moto r relay .
I s ther e continuity ?
Repai r ope n in th e wir e betwee n
th e blowe r moto r rela y an d th e
blowe r motor . Chec
k fo r a n ope n i n th e wir e
betwee n th e blowe r moto r rela y
an d bod y ground . I f th e wir e i s
OK , chec k fo r poo r groun d a t
G404 .
Check fo r a n ope n in th e wire :
1 . Tur n th e ignitio n switc h OFF .
2 . Chec k fo r continuit y betwee n
th e No . 1 termina l o f th e blow -
e r moto r rela y 5 P connecto r
an d bod y ground .
ProCarManuals.com

Radiator Fa n
Radiato r fa n doe s no t ru n a t hig h
spee d (bu t condense r fa n run s a t
hig h speed , an d bot h fan s ru n a t
lo w speed) .
Check th e No . 3 (7. 5 A ) i n th e
underdas h fuse/rela y box , an d th e
No . 4 7 (2 0 A ) fus e i n th e under -
hoo d fuse/rela y box .
Ar e th e fuse s OK ?
Remov e th e radiato r fa n rela y
fro m th e under-hoo d rela y bo x C ,
an d tes t i t (se e pag e 22-64 ).
I s th e rela y OK ?
Chec k fo r a n ope n in th e wire :
Measur e th e voltag e betwee n th e
No . 3 termina l o f th e radiato r fa n
rela y 4 P socke t an d bod y ground .
I s ther e batter y voltage ?
Chec k fo r a n ope n in th e wire :
Connec t th e No . 1 an d No . 3 ter -
minal s o f th e radiato r fa n rela y4P socke t wit h a jumpe r wire .
Doe s th e radiato r fa n run ?
Chec k fo r a n ope n in th e wire :
1 . Disconnec t th e jumpe r wire .
2 . Tur n th e ignitio n switc h O N (II) .
3 . Measur e th e voltag e betwee n
th e No . 2 termina l o f th e radi-
ato r fa n rela y 4 P socke t an d
bod y ground .
I s ther e batter y voltage ?
Repai r ope n i n th e L T GRN/BL K
wir e betwee n th e radiato r fa n
rela y an d th e fa n contro l unit .
Replac e th e fuse(s) , an d recheck .
Replace th e radiato r fa n relay . RADIATO
R FA N RELA Y 4P SOCKE T
Repai r ope n in th e wir e betwee n
th e No . 4 7 fus e an d th e radiato r
fa n relay .
Repai r ope n in th e wir e betwee n
th e radiato r fa n rela y an d th e
radiato r fan .
JUMPE RWIRE
Repai r ope n in th e wir e betwee n
th e No . 3 fus e an d th e radiato r
fa n relay .
ProCarManuals.com