1996 ACURA RL KA9 Service Repair Manual

Troubleshooting
Recirculation Contro l Moto r
Recirculatio n contro l door s d o
no t chang e betwee n FRES H an d
RECIRCULATE .
Check th e No . 3 (7. 5 A ) fus e in th eunder-das h fuse/rela y box .
I s th e fus e OK ?
Replac e th e fuse , an d recheck .
RECIRCULATIO N CONTRO L MOTO R4P CONNECTO R
Check fo r a n ope n in th e wire :
1 . Disconnec t th e recirculatio n
contro l moto r 4 P connector .
2 . Tur n th e ignitio n switc h O N (II) .
3 . 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 recirculatio n contro l
motor:1. Tur n th e ignitio n switc h OFF .
2 . Tes t th e recirculatio n contro l
moto r (se e pag e 22-59 ).
I s th e recirculatio n contro l
moto r
OK?
To pag e 22-3 5
Repai r ope n in th e wir e betwee nthe No . 3 fus e an d th e recircula -tion contro l motor . Wir
e sid e o f femal e terminal s
Chec k th e recirculatio n contro l
linkag e an d doors :
1 . Remov e th e recirculatio n con -
tro l moto r (se e pag e 22-59 ).
2 . Chec k th e recirculatio n contro l
linkag e an d door s fo r smoot h
movement .
D o th e recirculatio n contro l link -
ag e an d door s mov e smoothly ? Repai
r th e recirculatio n contro l
linkag e o r doors .
Replac e th e recirculatio n contro l
motor.
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From pag e 22-3 4
Chec k fo r a shor t i n th e wire(s) :
1 . Remov e th e climat e contro l
uni t (se e pag e 22-55 ), an d dis -
connec t th e 8 P an d 20 P con -
nectors .2. Chec k fo r continuit y betwee n
th e No . 1 9 an d No . 2 0 termi -
nal s o f th e 20 P connecto r an d
bod y groun d individually .
I s ther e continuity ?
Chec k fo r a shor t t o power :
Chec k th e sam e wire s fo r voltage .
I s ther e an y voltage ?
Chec k fo r a n ope n in th e wire(s) :
Chec k fo r continuit y betwee n th e
followin g terminal s o f th e recircu -
latio n contro l moto r 4 P connecto r
an d th e climat e contro l uni t 20 P
connector .4P: 20P :No. 2 —No . 20
No . 4 —No . 19
Is ther e continuity ?
Chec k fo r loos e wire s o r poo r
connection s a t th e climat e con -
tro l uni t 20 P connecto r an d a t th e
recirculatio n contro l moto r 4 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
control unit .
CLIMAT E CONTRO L UNI T 20 P CONNECTO R
Wir e sid e o f femal e terminal s
Repai r shor t i n th e wire(s ) betwee n
th e recirculatio n contro l moto r an d
th e climat e contro l unit .
Repai r shor t t o powe r i n th e wir e
betwee n th e recirculatio n contro l
moto r an d th e climat e contro l
unit . (Thi s damage s th e climat e
contro l unit. )
Repai r ope n in th e wire(s ) betwee n
th e recirculatio n contro l moto r
an d th e climat e contro l unit . RECIRCULATIO
N CONTRO L MOTO R
4 P CONNECTO R
Wir e sid e o f femal e terminal s
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Troubleshooting
Engine Coolan t Temperatur e (ECT ) Senso r
The blowe r moto r doe s no t ru n immediately , eve n thoug h th e engin e is full y warme d up . (NOTE : Th e temperatur e contro l
dia l mus t b e se t betwee n 61° F [18°C ] an d 89° F [32°C]. )
Does th e malfunctio n indica -
to r lam p com e on ?
Chec k fo r a n ope n in th e wire :
1 . Tur n th e ignitio n switc h OFF .
2 . Remov e th e climat e contro l
uni t (se e pag e 22-55 ), an d dis -
connec t th e 8 P an d 20 P con -
nectors .
3 . Disconnec t th e EC T senso r 2 P
connecto r (se e sectio n 11 ).
4 . Chec k fo r continuit y betwee n
th e No . 1 7 termina l o f th e 20 P
connecto r an d th e No . 2 ter -
mina l o f th e 2 P connector .
I s ther e continuity ?
Chec k fo r loos e wire s o r poo r
connection s a t th e climat e con -trol uni t 20 P connecto r an d a t
th e EC T senso r 2 P connector . I f
th e connection s ar e good , substi -
tut e a known-goo d climat e con -
trol unit , an d recheck . I f th esymptom/indicatio n goe s away ,
replac e th e origina l climat e con -
tro l unit . Se
e sectio n 11 .
CLIMATE CONTRO L UNI T 20 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 climat e contro l uni t an d th e
EC T sensor .
ECT SENSO R 2P CONNECTO R
Wir e side of femal e terminal s
Chec
k th e malfunctio n indicato r
lam p (MIL) .
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