fuse box ACURA RL KA9 1996 Service Manual PDF

VSA Syste m Indicato r Doe s No t Com e O n
Doe s th e brak e syste m indica -
to r com e on ?
Chec k th e VS A contro l unit :
1. Tur n th e ignitio n switc h OFF .2. Disconnec t th e VS A contro l
uni t 42 P connector .
3. Tur n th e ignitio n switc h O N (II) .
Doe s th e VS A syste m indica -
to r com e on ?
Chec k th e VS A indicator :
1. Tur n th e ignitio n switc h OFF .2. Chec k th e VS A syste m indica -
to r bul b in th e gaug e assembly .
Is th e bul b OK ?
Chec k fo r a shor t t o bod y groun d
i n th e VS A circuit :
1 . Disconnec t th e gaug e assem -
bl y 30 P connector.
2 . Chec k fo r continuit y betwee n
termina l No . 2 2 an d bod yground .
I s ther e continuity ?
(T o pag e 19-216 ) Gaug
e rela y stuc k OFF .
Blow n METE R (1 5 A ) fus e in th e
under-hoo d fuse/rela y box .
Blow n METE R (7. 5 A ) fus e i n
th e under-das h fuse/rela y box .
Repai r ope n in th e wir e betwee n
th e METE R (1 5 A ) fus e an d th e
gaug e assembly .Repair ope n in th e wir e betwee n
th e METE R (7. 5 A ) fus e an d bod y
ground .Replac e th e under-hoo d fuse /
rela y bo x o r under-das h fuse /
rela y box . (Ope n circui t insid e
the box. )
Chec k fo r loos e terminal s i n th e
VS A contro l uni t 42 P connector .
I f necessary , substitut e a known -
goo d VS A modulator-contro l
unit , an d recheck .
Replac e th e VS A syste m indica -
to r bulb .
GAUGE ASSEMBL Y 30 P CONNECTO R
Wir e sid e o f femal e terminal s
Repai r shor t t o bod y groun d in th e
wir e betwee n th e gaug e assembl y
an d th e VS A contro l unit .
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VSA Syste m Indicato r Doe s No t G o Of f
Chec k th e VS A (2 0 A ) fus e i n th e
under-hoo d fuse/rela y box , an d
reinstal l th e fus e i f i t i s OK .
I s th e fus e OK ?
Chec k th e R/ C MIRRO R (7. 5 A ) fus ein th e under-das h 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 fo r a n ope n in th e + B FS R
circuit :
1 . Disconnec t th e VS A contro l
uni t 42 P connector .
2 . Measur e th e voltag e betwee n
termina l No . 6 an d bod yground .
I s ther e batter y voltage ?
I s ther e batter y voltage ?
Chec k fo r a n ope n in th e GN D cir -
cuit :
1. Tur n th e ignitio n switc h OFF .2. Chec k fo r continuit y betwee nthe VS A contro l uni t 42 P con -necto r termina l No . 5 an d bod yground .
I s ther e continuity ?
(T o pag e 19-218 ) 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 modulator-contro l unit .
Replac e th e fuse , an d recheck . I f
th e fus e is blown , chec k fo r a shor t
t o bod y groun d in thi s fus e circuit .
VSA CONTRO L UNI T 42 P CONNECTO R
Wir e sid e o f femal e terminal s
Repai r ope n in th e wir e betwee n
th e VS A (2 0 A ) fus e an d th e VS A
contro l unit .
Repai r ope n in th e wir e betwee nthe R/ C MIRRO R (7. 5 A ) fus e an d
th e VS A contro l unit .
Repai r ope n in th e wir e betwee n
th e VS A contro l uni t an d bod y
ground .Repair poo r groun d (G251) .
Chec
k fo r a n ope n in th e IG 2 cir -
cuit :1. Tur n th e ignitio n switc h O N (II) .
2 . Measur e th e voltag e betwee n
the VS A contro l uni t 42 P con -necto r termina l No . 2 3 an d
bod y ground .
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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 51 , 52 , 53 : Pum p Moto r
Check th e VS A MOTO R (4 0 A )
fus e i n th e under-hoo d fuse/rela y
box, an d reinstal l th e fus e i f i t i sOK .
Is th e fus e OK ?
Chec k fo r a n ope n in th e +B-M R
circuit :
1 . Disconnec t th e VS A contro l
uni t 42 P connector .
2 . Measur e th e voltag e betwee n
termina l No . 2 an d bod yground .
Is ther e batter y voltage ?
Chec k fo r a n ope n in th e M-GN D
circuit:Check fo r continuit y betwee n th e
VS A contro l uni t 42 P connecto r
terminal No . 1 an d bod y ground .
Is ther e continuity ?
Proble m verification :
1 . Clea r th e DTC .
2. Test drive the vehicle at 12
mph (2 0 km/h ) o r more .
3 . Verif y th e DTC .
I s DT C 51 , 5 2 o r 5 3 indicated ? 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 modulator-con -
tro l unit .
VSA CONTRO L UNI T 42 P CONNECTO R
Repai r ope n in th e wir e betwee n
th e VS A MOTO R (40A ) fus e an d
th e VS A contro l unit .
Repai r ope n i n th e wir e
betwee n th e VS A contro l uni t
an d bod y ground .
Repai r poo r groun d (G401 ,
G402) .
Th e syste m is O K a t thi s time .
Chec k fo r loos e terminal s i n th e
VS A contro l uni t 42 P connector .
I f necessary , substitut e a known -
goo d VS A modulator-contro l
unit, an d recheck .
Terminal sid e o f femal e terminal s
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DTC 54 : Valv e rela y
Chec k th e VS A (2 0 A ) fus e in 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 ?
Replac e th e fuse , an d recheck . I fth 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 modulator-con -
tro l unit .
Chec k fo r a n ope n in th e +B-FS R
circuit:1. Disconnec t th e VS A contro l
uni t 42 P connector .
2 . Measur e th e voltag e betwee n
th e VS A contro l uni t 42 P con -
necto r termina l No . 6 an d
bod y ground . VS
A CONTRO L UNI T 42 P CONNECTO R
Wir e sid e o f femal e terminal s
I s ther e batter y voltage ? Repai
r ope n in th e wir e betwee n
the VS A (2 0 A ) fus e an d th e VS Acontro l unit .
Proble m verification :
1 . Connec t th e VS A control unit
42P connector .2. Clea r th e DTC .3. Test drive the vehicle.4. Verif y th e DTC .
I s DT C 5 4 indicated ?
The syste m is O K a t thi s time .
Chec k fo r loos e terminal s i n th e
VS A contro l uni t 42 P connector .If necessary , substitut e a known -
goo d VS A modulator-contro l
unit , an d recheck .
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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 .
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Troubleshooting
DTC 95 : Precharg e Pum p Moto r
Chec k th e VS A MOTO R (40A )fuse in th e under-hoo d fuse/rela y
box , an d reinstal l th e fus e i f i t i s
OK .
Is th e fus e OK ?
Chec k fo r a n ope n i n th e +B-M Rcircuit:1. Disconnec t VS A contro l uni t42P connector.2. Measur e th e voltag e betwee n
termina l No . 2 an d bod y
ground .
Is ther e batter y voltage ?
Check fo r a n ope n i n th e M-GN Dcircuit:Check fo r continuit y betwee n th e
VS A contro l uni t 42 P connecto r
termina l No . 1 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
VL P circuits :1. Disconnec t th e precharg e
pum p moto r 2 P connector .
2 . Tur n th e ignitio n switc h O N
(II).3. Measur e th e voltag e betwee nbody groun d an d th e VS Acontro l uni t 42 P connecto rterminals No . 3 an d No . 4individually .
I s ther e batter y voltage ?
(To pag e 19-261 )
Replac e th e fuse , an d recheck .If th e fus e i s blown , chec k fo r ashor t t o bod y groun d in thi s fus ecircuit . I f th e circui t i s OK , replac ethe VS A modulator-contro l unit .
VSA CONTRO L UNI T 42 P CONNECTO R
Repair ope n i n th e wir e
betwee n th e VS A contro l uni t
an d bod y ground .
Repair poo r groun d (G401 ,G402).
Repair shor t t o powe r i n th e wir e
betwee n th e precharg e pum p
moto r an d th e VS A contro l unit . Wir
e sid e o f femal e terminal s
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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 .
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Troubleshooting
Symptom Char t
For electrica l malfunction s whic h ar e indicate d b y th e self-diagnosti c system , refe r t o self-diagnosi s functio n (se e nex t
page) .
NOTE :
Check th e engin e coolan t level , an d allo w th e engin e t o war m u p befor e troubleshooting .
An y abnormalit y mus t b e correcte d befor e continuin g th e test .
Becaus e o f th e precis e measurement s needed , us e a multimete r whe n testing .
Befor e performin g an y troubleshootin g procedure s check :
— Fuse s No . 3 7 (4 0 A) , No . 4 7 (2 0 A) , No . 5 0 (2 0 A) , No . 5 6 (7. 5 A ) i n th e under-hoo d fuse/rela y box , an d No . 3 (7. 5 A) , No .
5 (2 0 A ) i n th e under-das h fuse/rela y bo x
— Ground s No . G201 , G301 , G302 , G401 , G402 , G40 4
— Cleanlines s an d tightnes s o f al l connector s
Symptom
Recirculatio n contro l door s d o no t chang e betwee n FRES H an d RECIRCULATE .
Th e blowe r moto r doe s no t ru n immediatel y eve n thoug h th e engin e i s full y warme d
up . (NOTE : Th e temperatur e contro l dia l mus t b e se t betwee n 6 1 °F [18°C ] an d 89° F
[32°C]. )
No heate r an d A/ C in eithe r manua l o r AUT O modes .
Bot h fan s d o no t ru n fo r engin e coolin g (bu t the y bot h ru n wit h th e A/ C on) .
Both fan s alway s ru n a t hig h spee d fo r engin e cooling .
Both fan s alway s ru n a t hig h spee d wit h th e A/ C on .
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) .
Condense r fa n doe s no t ru n a t hig h spee d (bu t radiato r fa n run s a t hig h speed , an d
bot h fan s ru n a t lo w speed) .
Bot h fan s d o no t ru n a t lo w speed , an d 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) .
Bot h fan s d o no t ru n a t low speed , an d condense r fa n doe s no t ru n a t hig h spee d
(bu t radiato r fa n run s a t hig h speed) .
Bot h fan s d o no t ru n a t lo w spee d (bu t bot h fan s ru n a t hig h speed) .
Bot h fan s d o no t ru n a t hig h spee d (bu t bot h fan s ru n a t lo w speed) .
Compresso r clutc h doe s no t engage .
Bot h fan s an d compresso r d o no t wor k a t all . Se
e pag e
22-3 4
22-3 6
22-3 7
22-3 8
22-39
22-4 0
22-41
22-42
22-4 3
22-4 4
22-47
22-48
22-4 9
22-53
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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 .
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