relay ACURA RL KA9 1996 Service Owners Manual

Troubleshooting
Condenser Fa n
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) .
Chec k th e No . 3 (7. 5 A ) fus e i n
th e under-das h fuse/rela y box .
I s th e fus e OK ?
Remov e th e radiato r fa n mai n
rela y fro m th e under-hoo d rela y
bo x A , an d tes t i t (se e pag e
22-64 ).
Is th e rela y OK ?
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 radi -
ato r fa n mai n rela y 5 P socke t
an d bod y ground .
I s ther e batter y voltage ?
Is ther e continuity ?
Repair ope n i n th e L T GRN/BL K
wir e betwee n th e radiato r fa n
mai n rela y an d th e fa n contro l
unit . Replac
e th e fuse , an d recheck .
Replac e th e radiato r fa n mai n
relay.RADIATO R FA N MAI N RELA Y 5 P SOCKE T
BLK/YE L
Repair ope n i n th e wir e betwee n
th e No . 3 fus e an d th e radiato r
fa n mai n relay .
Chec k fo r a n ope n i n th e wir e
betwee n th e radiato r fa n mai n
rela y an d bod y ground . I f the
wir e is OK , chec k fo r poo r groun d
atG301 .
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 n
th e No . 4 termina l o f th e radi -
ator fa n mai n rela y 5 P socke tand bod y ground .
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Both Fans Low Speed and Radiator Fan High Speed

Both fans do not run at low speed,

and radiator fan does not run at

high speed (but condenser fan

runs at high speed).

Check for an open in the wire:

1. Disconnect the radiator fan 2P

connector.

2. Turn the ignition switch ON (II)

and the A/C system on to

MAX COOL.

3. Measure the voltage between

the No. 2 terminal and body

ground.
RADIATOR FAN 2P CONNECTOR

Wire side of female terminals

Is there battery voltage?
Repair open in the wire between

the radiator fan relay, the radia-

tor fan main relay and the radia-

tor
fan.

Is there continuity?
Check for an open in the wire

between the radiator fan and

body ground. If the wire is OK,

check for poor ground at G302.
Check for an open in the wire:

1. Turn the ignition switch OFF.

2. Check for continuity between

the No. 1 terminal of the radi-

ator fan 2P connector and

body ground.

Replace the radiator fan motor.ProCarManuals.com

Troubleshooting
Both Fan s Lo w Spee d an d Condense r Fa n Hig h Spee d
Both fan s d o no t ru n a t lo w
speed , an d condense r fa n doe s
no t ru n a t hig h spee d (bu t radia -
to r fa n run s a t hig h speed) .
Chec k th e No . 3 (7. 5 A ) fus e i n th e
under-das h fuse/rela y box , an d th e
No . 5 0 (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 condense r fa n rela y
fro m th e under-hoo d rela y bo x A ,
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 . 1 termina l o f th e condense r
fa n rela y 4 P socke t an d bod y
ground .
I s ther e batter y voltage ?
Chec k th e condense r fan :
Connec t th e No . 1 an d No . 3 ter -
minal s o f th e condense r fa n rela y
4P socke t wit h a jumpe r wire .
Replac e th e fuse(s) , an d recheck .
Replac e th e condense r fa n relay .
CONDENSER FA N RELA Y 4 P SOCKE T
Repai r ope n i n th e wir e betwee n
th e No . 5 0 fus e an d th e conden -
se r fa n relay .
JUMPE RWIRE
Does th e condense r fa n run ? T
o pag e 22-4 5
T o pag e 22-4 6
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From pag e 22-4 4
Chec k fo r a n ope n in th e wire :
1 Disconnec t th e jumpe r wire .
2 . Disconnec t th e condense r fa n
2P connector .3. Chec k fo r continuit y betwee n
th e No . 3 termina l o f th e con -
dense r fa n rela y 4 P socke t an d
th e No . 2 termina l o f th e con -
denser fan 2 P connector .
I s ther e continuity ? CONDENSE
R FA N RELA Y 4 P SOCKE T
BLU
Repai r ope n i n th e wir e betwee n
th e condense r fa n rela y an d th e
condense r fan .
CONDENSE R FA N 2 P CONNECTO RWire sid e o f femal e terminal s
RADIATO R FA N MAI N RELA Y 5 P SOCKE T
I s ther e continuity ? Repai
r ope n i n th e wir e betwee n
th e condense r fa n an d th e radia -
to r fa n mai n relay .
Tes t th e radiato r fa n mai n rela y
(se e pag e 22-64 ).
Is th e rela y OK ?Replac e th e radiato r fa n mai nrelay .
Replac e th e condense r fa n motor .
Chec
k fo r a n ope n in th e wire :
1 . Remov e th e radiato r fa n mai n
relay fro m th e under-hoo drelay bo x A .
2 . Chec k fo r continuit y betwee n
th e No . 1 termina l o f th e con -
dense r fa n 2 P connecto r an d
th e No . 5 termina l o f th e radi -
ato r fa n mai n rela y 5 P socket .
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Troubleshooting
Both Fan s Lo w Spee d an d Condense r Fa n Hig h Spee d (cont'd )
From pag e 22-4 4
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 con -
dense r fa n rela y 4 P socke t
and bod y ground .
Is ther e batter y voltage ?
CONDENSE R FA N RELA Y 4 P SOCKE T
Repair ope n i n th e wir e betwee n
th e No . 3 fus e an d th e condense r
fa n relay .
FAN CONTRO L UNI T 12 P CONNECTO R
I s ther e batter y voltage ? Repai
r ope n in th e wir e betwee n
th e condense r fa n rela y an d th e
fan contro l unit . Wir
e sid e o f femal e terminal s
Check fo r loos e wire s o r poo r
connection s a t th e fa n contro l
uni t 12 P connector . I f th e connec -
tion s ar e good , substitut e a
known-goo d fa n contro l unit , an d
recheck . I f th e symptom/indi -
catio n goe s away , replac e origi -
nal fa n contro l unit .
Chec k fo r a n ope n in th e wire :1. Tur n th e ignitio n switc h OFF ,then reinstal l th e condense r
fa n relay .
2 . Disconnec t th e fa n contro l uni t
12 P connector .
3 . Tur n th e ignitio n switc h O N (II) .
4 . Measur e th e voltag e betwee n
the No . 1 0 termina l an d bod yground .
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Both Fans Low Speed

Both fans do not run at low speed

(but both fans run at high speed).

Check for an open in the wire:

1. Remove the radiator fan main

relay from the under-hood

relay box A.

2. Disconnect the radiator fan 2P

connector.

3. Check for continuity between

the No. 2 terminal of the radi-

ator fan main relay 5P socket

and the No. 2 terminal of the

radiator fan 2P connector.
NOTE: It is normal for both fans to run at high speed when the system pressure is above

1,520 kPa (15.5 kgf/cm2, 220 psi), or when the engine coolant temperature is above 194°F

(90°C).

RADIATOR FAN 2P CONNECTOR

Wire side of female terminals

RADIATOR FAN MAIN RELAY 5P SOCKET

Is there continuity?
Repair open in the wire between

the radiator fan main relay and

the radiator fan.

Replace the radiator fan main

relay.ProCarManuals.com

Troubleshooting
Both Fan s Hig h Spee d
Is ther e batter y voltage ?
Chec k fo r loos e wire s o r poo r con -
nection s a t th e fa n contro l uni t
12 P connector . I f th e connection s
ar e good , substitut e a known -
goo d fa n contro l unit , an d
recheck . I f th e symptom/indi -
catio n goe s away , replac e origina l
fa n contro l unit . NOTE
: I t i s norma l fo r bot h fan s t o ru n a t hig h spee d whe n th e syste m pressur e i s abov e
1,52 0 kP a (15. 5 kgf/cm
2, 22 0 psi) , o r whe n th e engin e coolan t temperatur e is abov e 194° F(90°C) .
FAN CONTRO L UNI T 12 P CONNECTO R
Repai r ope n in th e wir e betwee n
th e radiato r fa n mai n relay , th e
radiato r fa n rela y an d th e fa n
contro l unit . Wir
e sid e o f femal e terminal s
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) .
Chec k fo r a n ope n in th e wire :
1 . Disconnec t th e fa n contro l
uni t 12 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 . 5 termina l an d bod y
ground .
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Compressor
Compresso r clutc h doe s no t
engage .
Chec k th e No . 3 (7. 5 A ) an d No . 5
(2 0 A ) fuse s in th e under-das h fuse /
rela y box .
Ar e th e fuse s OK ?
Remov e th e compresso r clutc h
rela y fro m th e under-hoo d rela y
bo x A , an d tes t i t (se e pag e
22-64 ).
Is 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. 1 termina l o f th e compresso rclutch rela y 4 P socke t an d bod yground .
Is ther e batter y voltage ?
Chec k th e compresso r clutch :
Connec t th e No . 1 an d No . 3 termi -
nal s o f th e compresso r clutc h rela y
4P socke t wit h a jumpe r wire .
Does th e compresso r clutc h click ?
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 nthe No . 2 termina l o f th e com -presso r clutc h rela y 4 P socke tand bod y ground .
Is ther e batter y voltage ?
T o pag e 22-5 1 Replac
e th e fuse(s) , an d recheck .
Replac e th e compresso r clutc h
relay .
COMPRESSOR CLUTC H RELA Y
4 P SOCKE T
Repai r ope n i n th e wir e betwee n
th e No . 5 fus e an d th e compres -
so r clutc h relay .
T o pag e 22-5 0
Repai r ope n i n th e wir e betwee n
th e No . 3 fus e an d th e compres -
so r clutc h relay . JUMPE
R
WIRE
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From pag e 22-4 9
Chec k th e PC M (AC C an d AC S
lines) :1. Tur n th e ignitio n switc h OFF ,then reinstal l th e compresso r
clutc h relay .
2 . Disconnec t th e fa n contro l
uni t 12 P connector .
3 . Connec t th e No . 8 termina l an d
bod y groun d wit h a jumpe rwire.
4 . Tur n th e ignitio n switc h O N (II) ,
an d star t th e engine .
Doe s th e compresso r clutc h
engage ?
Is ther e continuity ?
Test th e radiato r fa n contro l sen -
so r (se e Fa n Control s i n
section 10 ).
Is th e senso r OK ?
Chec k fo r loos e wire s o r poo r
connection s a t th e fa n contro l
uni t 12 P connector . I f th e con -
nection s ar e good , substitut e a
known-goo d fa n contro l unit ,
an d recheck . I f th e symptom /
indicatio n goe s away , replac e
origina l fa n contro l unit . FA
N CONTRO L UNI T 12 P CONNECTO R
T o pag e 22-5 2 Wir
e sid e o f femal e terminal s
RADIATO R FA N CONTRO L SENSO R 2 P CONNECTO R
Wir e sid e o f femal e terminal s
Repai r shor t i n th e wir e betwee n
th e radiato r fa n contro l senso r
an d th e fa n contro l unit .
Replac e th e radiato r fa n contro lsensor.
Check fo r a shor t i n th e wire :1. Tur n th e ignitio n switc h OFF ,then disconnec t th e jumpe rwire.2. Disconnec t th e radiato r fa n
contro l senso r 2 P connector .
3 . Chec k fo r continuit y betwee n
th e No . 2 termina l an d bod y
ground . JUMPE
R
WIRE
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Mode Contro l Moto r
Replacemen t Tes
t
1. Lowe r th e steerin g colum n assembl y (se e
section 17 ).
2 . Loose n th e mountin g bolt s of the PGM-F I mai n
relay/steerin g colum n contro l uni t bracket .
3 . Disconnec t th e wir e harnes s cli p an d th e connecto r
fro m th e mod e contro l motor , the n remov e th e self -
tappin g screw s an d th e mod e contro l motor .
MODE CONTRO L MOTO R
WIREHARNES SCLIP
4. Instal l i n th e revers e orde r o f removal . Afte r installa -
tion , mak e sur e th e mod e contro l moto r run s
smoothly . 1
. Disconnec t th e 5 P connecto r fro m th e mod e contro l
motor .
2 . Connec t batter y powe r t o th e No . 1 termina l o f th e
mod e contro l moto r an d groun d th e No . 5 terminal ;
th e mod e contro l moto r shoul d run , an d sto p a t
VENT . I f i t doesn't , revers e th e connections ; th e
mod e contro l moto r shoul d run , an d sto p a t DEF .
NOTE : I f th e mod e contro l moto r doe s no t run ,
remov e it , the n chec k th e mod e contro l linkag e an d
door s fo r smoot h movement . I f the y mov e smoothly ,
replac e th e mod e contro l motor .
MODE CONTRO L MOTO R5P CONNECTO R
3. Measur e th e resistanc e betwee n th e No . 2 an d No . 3
terminals . I t shoul d b e betwee n 4. 8 to 7. 2 k .
4 . Measur e th e resistanc e betwee n th e No . 3 an d No . 4
terminals . I t shoul d b e betwee n 0.9 6 t o 1.4 4 k a t
VEN T an d betwee n 3.8 4 to 5.7 6 k a t DEF .
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