fog light ACURA RL KA9 1996 Service Repair Manual

Idle Contro l Syste m
Idle Contro l Syste m
The HD S o r th e sca n too l indicate s Diagnosti c Troubl e Cod e (DTC ) P0506 : Idl e contro l syste m RP M lowe r tha n
expected .
NOTE : I f DT C P051 1 is store d a t th e sam e tim e a s DT C P0506 , troubleshoo t DT C P051 1 first , the n troubleshoo t DT C P0506 .
Possibl e Caus e
IAC valv e mechanica l malfunctio n
Idl e ai r contro l therma l valv e malfunction
Throttl e bod y clogge d port , imprope r adjustmen t
Intak e manifol d gaske t leakag e
Intak e ai r hos e loos e o r leakin g
Vacuu m hose s leakag e
EC T senso r incorrec t outpu t
Troubleshootin g Flowchar t
— Th e MI L ha s bee n reporte d on .— DT C P050 6 is stored .
Proble m verification :
1. Star t th e engine . Hol d th eengin e a t 3,00 0 rp m wit h n oloa d (i n Par k o r neutral ) unti lthe radiato r fa n come s on ,then le t i t idle .2. Chec k th e engin e spee d a tidle wit h no-loa d conditions :headlights, blowe r fan , rea rdefogger , radiato r fan , an d ai rconditione r ar e no t operating .
Is it 65 0 ± 50 rpm ?Intermitten t failure , syste m is O Kat thi s time .
NO
(T o pag e 11-77 )
ProCarManuals.com

Idle Contro l Syste m
Idle Contro l Syste m
The HD S o r th e sca n too l indicate s Diagnosti c Troubl e Cod e (DTC ) P0507 : Idl e contro l syste m RP M highe r tha n
expected .
NOTE: I f DT C P051 1 i s store d a t th e sam e tim e a s DT C P0507 , troubleshoo t DT C P051 1 first , the n troubleshoo t DT C P0507 .
Possibl e Caus e
IA C valv e mechanica l malfunctio n
Idle ai r contro l therma l valv e malfunctio n
Throttle bod y clogge d port , imprope r adjustmen t
Intake manifol d gaske t leakag e
Intak e ai r hos e loos e o r leakin g
Vacuu m hose s leakag e
EC T senso r incorrec t outpu t
Troubleshootin g Flowchar t
— Th e MI L ha s bee n reporte d on .— DT C P050 7 is stored .
Problem verification :1. Star t th e engine . Hol d th eengin e a t 3,00 0 rp m wit h n oloa d (i n Par k o r neutral ) unti lthe radiato r fa n come s on ,then le t i t idle .2 Chec k th e engin e spee d a tidle wit h no-loa d conditions :headlights , blowe r fan , rea rdefogger , radiato r fan , an d ai rconditione r ar e no t operating .
Is it 65 0 ± 5 0 rpm ?Intermitten t failure , syste m is O Kat thi s time .
NO
(T o pag e 11-79 )
ProCarManuals.com

Idle Contro l Syste m
NOTE: I f DT C P150 8 is store d a t th e sam e tim e a s DT C P0505 , troubleshoo t DT C P150 8 first , the n troubleshoo t DT C P0505 .
Possibl e Caus e
• IA C valv e mechanica l malfunctio n
• Idl e ai r contro l therma l valv e malfunctio n
• Throttl e bod y clogge d port , imprope r adjustmen t
• Intak e manifol d gaske t leakag e
• Intak e ai r hos e loos e o r leakin g
• Vacuu m hose s leakag e
• EC T senso r incorrec t outpu t
• Throttl e Positio n senso r incorrec t output *
•: '9 6 mode l onl y
— Th e MI L ha s bee n reporte d on .
— DT C P050 5 is stored .
Proble m verification :
1 . Star t th e engine . Hol d th e
engin e a t 3,00 0 rp m wit h n o
loa d
(in Par k or neutral ) untilthe radiato r fa n come s on ,then le t i t idle .
2 . Wit h th e sca n tool , chec k th e
followin g item s ('9 6 mode l
only) .
— Throttl e positio n shoul d b e
abou t 10 % wit h th e throttl e
fully closed .— Engin e coolan t tempera -
tur e shoul d b e abou t 17 6 -
194° F (80-90°C) .
I f the y ar e no t withi n th e spec. ,
repai r th e fault y senso r circuit .
3 Chec k th e engin e spee d a t
idl e wit h no-loa d conditions :
headlights , blowe r fan , rea r
defogger , radiato r fan , an d ai r
conditione r ar e no t operating .
Is i t 65 0 5 0 rpm ?
NO
Is i t 60 0 rp m o r less ?
YES
Intermitten t failure , syste m is O Kat thi s time .
NO
(T o pag e 11-114 ) (T o pag e 11-114 )
YES
The sca n too l indicate s Diagnosti c Troubl e Cod e (DTC ) P0505 : Idl e contro l syste m malfunction .
Troubleshootin g Flowchar t
ProCarManuals.com

Idle Contro l Syste m
Alternato r (ALT ) F R Signa l
PCM CONNECTOR S
Is ther e abou t 5 V ?
YE S
Chec k th e operatio n o f th e ALT :
1 . Tur n th e ignitio n switc h OFF .
2 . Reconnec t th e AL T GR N 4 P
connecto r t o th e ALT .
3 . Star t th e engine . Hol d th e
engin e a t 3,00 0 rp m wit h n o
loa d (i n Par k o r neutral ) unti l
th e radiato r fa n come s on ,
then le t i t idle .4. Measur e voltag e betwee n PC M
connecto r terminal s D 5 an d A26 .
Doe s th e voltag e decreas e whe n
headlight s an d rea r defogge r ar e
turne d on ?
NO
Chec k fo r a n ope n in th e wir e (AL T
F line) :
1 . Tur n th e ignitio n switc h OFF .
2 . Disconnec t th e negativ e bat -
ter y cabl e fro m th e battery .
3 . Disconnec t th e PC M connec -
tor D (22P) .4. Disconnec t th e GR N 4 P con -
necto r fro m th e ALT .
5 . Connec t th e AL T 4 P connecto r
termina l No . 4 to bod y groun d
wit h a jumpe r wire .
6 . Chec k fo r continuit y betwee n
body groun d an d PC M con -necto r termina l D5 .
I s ther e continuity ?
YES
See th e AL T inspectio n
(see sectio n 4 ).
N O
Wir e sid e o f femal e terminal s
Chec k fo r a shor t i n th e wir e (AL T
F line) :
1 . Tur n th e ignitio n switc h OFF .
2 . Disconnec t th e negativ e bat -
ter y cabl e fro m th e battery .
3 . Disconnec t th e PC M connecto r
D (22P) .4. Chec k fo r continuit y betwee n
bod y groun d an d PC M con -
necto r termina l D5 .
I s ther e continuity ? Repai
r shor t i n th e wir e betwee n
the PC M (D5 ) and th e ALT .
NO
Substitut e a known-goo d PC Mand rechec k (se e pag e 11-4 1 fo rimmobilize r information) . I f pre -
scribe d voltag e is no w available ,
replac e th e origina l PCM .
AL T F R signa l i s OK .
ALT GR N 4 P CONNECTO R (C131 )
Repair ope n wir e betwee n th ePCM (D5 ) and th e ALT .
PCM CONNECTO R D (22P )
Wir e sid e o f femal e terminal s
NO
Wir e sid e o f femal e terminal s
YES YE
S
This signal s th e PC M whe n th e Alternato r (ALT ) i s charging .
Inspection o f AL T F R Signal .
Chec k fo r a shor t i n th e wir e (AL T
F line) :
1 . Disconnec t th e GR N 4 P con -
necto r fro m th e ALT .
2 . Tur n th e ignitio n switc h O N (II) .
3 . Measur e voltag e betwee n PC M
connecto r terminal s D 5 an d A26 .
ProCarManuals.com

Idle Contro l Syste m
Idle Spee d Settin g
Inspection/Adjustmen t
NOTE:
• Befor e settin g th e idl e speed , chec k th e followin g
items:
— Th e MI L ha s no t bee n reporte d on .
— Ignitio n timin g
— Spar k plug s
— Ai r cleane r
— PC V syste m
• (Canada ) Depres s th e parkin g brak e pedal . Star t th e
engine , the n chec k tha t th e headlight s ar e off .
1 . Connec t a OBDI I sca n too l (se e pag e 11-40 ) o r
tachometer .
• Connec t a tachomete r t o ignite r uni t secondar y
loo p (white-taped) .
• Remov e th e rubbe r ca p fro m th e tachomete r
connecto r an d connec t a tachometer .
TACHOMETE RCONNECTORTACHOMETE R
RUBBERCAP
BATTER Y
2. Star t th e engine . Hol d th e engin e a t 3,00 0 rp m wit h
n o loa d (i n Par k o r neutral ) unti l th e radiato r fa n
come s on , the n le t i t idle . 3
. Disconnec t th e IA C valv e connector .
IAC VALV E
4. I f th e engin e stalls , star t th e engin e wit h th e acceler -
ato r peda l slightl y depressed . Stabiliz e th e rp m a t
1,000 , the n slowl y releas e th e peda l unti l th e engin e
idles .
5 . Chec k idlin g unde r th e followin g conditions : head -
light s (Hi ) an d rea r defogge r on , blowe r fan , radia -
to r fan , an d ai r conditione r ar e no t operating .
Idl e spee d shoul d be :
480 5 0 rp m
(in Par k o r neutral )
Adjust th e idl e speed , i f necessary , b y turnin g th e
idl e adjustin g screw .
NOTE : Afte r adjustin g th e idl e spee d i n thi s step ,
rechec k th e ignitio n timin g (se e sectio n 4 ).
I f i t i s ou t o f spec , g o bac k t o ste p 4 .
IDL E ADJUSTIN G SCRE W
TACHOMETE
R
ProCarManuals.com

PCM Memory Setting

NOTE: The PCM reset procedure and disconnecting the

battery or the BACK UP RADIO (7.5 A) fuse cancels the

PCM memory for idle control. The following procedure

is needed after the PCM reset procedure and reconnect-

ing the battery or the BACK UP RADIO (7.5 A) fuse.

1. Start the engine. Hold the engine at 3,000 rpm with

no load (in Park or neutral) until the radiator fan

comes on.

2. Let the engine idle for approx. 5 minutes under the

following conditions:

• Transmission in Park or neutral

• A/C switch OFF

• Headlights OFF

• Rear defogger OFFProCarManuals.com

Emission Contro l Syste m
System Descriptio n
The emissio n contro l syste m include s a Thre e Wa y Cata -
lyti c Converte r (TWC) , Exhaus t Ga s Recirculatio n (EGR )
system , Positiv e Crankcas e Ventilatio n (PCV ) syste m an d
Evaporativ e Emissio n (EVAP ) system . Th e emissio n contro l
syste m is designe d t o mee t federa l an d stat e emissio n
standards .
Tailpipe Emissio n
Inspection
Do no t smok e durin g thi s procedure . Kee p
an y ope n flam e awa y fro m you r wor k area .
1 . Star t th e engine . Hol d th e engin e a t 3,00 0 rp m wit h
n o loa d (i n Par k o r neutral ) unti l th e radiato r fa n
come s on , the n le t i t idle .
2 . Connec t a tachometer .
3 . Chec k an d adjus t th e idl e speed , i f necessar y (se e
pag e 11-124 ).
4 . War m u p an d calibrat e th e C O mete r accordin g to th e
mete r manufacturer' s instructions .
5 . Chec k idl e C O wit h th e headlights , heate r blower ,
rea r windo w defogger , coolin g fan , an d ai r condition -
er off .
NOTE : (Canada ) Depres s th e parkin g brak e pedal .
Star t th e engine , the n chec k tha t th e headlight s ar e
off.
CO mete r shoul d indicat e 0.1 % maximum .
Three Wa y Catalyti c Converte r
(TWC)
Descriptio n
Th e Thre e Wa y Catalyti c Converte r (TWC) is use d t o
conver t hydrocarbon s (HC) , carbo n monoxid e (CO) , an d
oxide s o f nitroge n (NOx) in th e exhaus t gas , t o carbo n
dioxid e (CO
2), dinitroge n (N2) an d wate r vapor .
SECONDAR Y HEATE D OXYGE N SENSO R (SENSO R 2)
HOUSIN G
THREE WA Y
CATALYST S
ProCarManuals.com

Power Relay s
Relay Tes t
NOTE : Se e pag e 23-13 2 fo r tur n signal/hazar d rela y inpu t
test .
Normally-ope n typ e A ('9 6 - 9 7 models) :
1 . Chec k fo r continuit y betwee n th e terminals .
• Ther e shoul d b e continuit y betwee n th e No . 1
an d No . 2 terminal s whe n powe r an d groun d ar e
connecte d t o th e No . 3 an d No . 4 terminals .
• Ther e shoul d b e n o continuit y betwee n th e No . 1
an d No . 2 terminal s whe n powe r i s disconnected .Normally-ope
n typ e B :
1 . Chec k fo r continuit y betwee n th e terminals .
• Ther e shoul d b e continuit y betwee n th e No . 1
an d No . 3 terminal s whe n powe r an d groun d ar e
connecte d t o th e No . 2 an d No . 4 terminals .
• Ther e shoul d b e n o continuit y betwee n th e No . 1
an d No . 3 terminal s whe n powe r i s disconnected .
Radiato r fa n rela y
Hor n rela y
Cigarett e lighte r rela y
Powe r windo w maste r switc h rela y
Condense r fa n rela y
Sea t heate r rela y
AB S fron t fail-saf e rela y
AB S rea r fail-saf e rela y
TC S fail-saf e rela y
Revers e rela y
Fron t fo g ligh t rela y
Gaug e rela y
• Fue l pum p rela y
• Sea t heate r rela y ('9 9 - 0 1 models )
Headligh
t rela y ('9 6 - 9 8 models )
Rea r windo w defogge r rela y
AB S pum p moto r rela y
Headligh t hig h bea m rela y ('99-0 1 models )
VS A fail-saf e rela y ('0 0 - 0 1 models )
ProCarManuals.com

Fog Light s
Switch Tes t
NOTE : Yo u ca n als o tes t th e switc h b y usin g th e self -
diagnosi s functio n (mod e 2) . (Se e pag e 23-252 .)
1 . Remov e th e fo g ligh t switch , the n disconnec t th e
connector .
Withou t Navigatio n System :
FOGLIGH T SWITC H
BUL B (0.8 4 W ) 5
P CONNECTO R
With Navigatio n System : 2
. Chec k fo r continuit y betwee n th e terminal s i n eac h
switc h positio n accordin g t o th e table .
'99-0 1 model s wit h Navigatio n Syste m
BULB (0.8 4 W )
FO GLIGH T SWITC H
CONNECTO R
'96 - 9 8 model s
'9 9 - 0 1 model s
ProCarManuals.com

Adjustment
1. Adjus t th e fo g light s t o loca l requirement s b y turn -
ing th e adjusters .
'96-98 models :
ADJUSTE R
Replacemen t
CAUTION: Fo g light s becom e ver y ho t i n use ; d o no t
touc h the m o r th e attachin g hardwar e immediatel y
afte r the y hav e bee n turne d off .
1 . Remov e th e mountin g bolt .
2P CONNECTO R
MOUNTINGBOLT
FOG LIGH T
(Bulb : 5 5 W )
2. Remov e th e fo g ligh t assembly , the n disconnec t th e
2 P connector .
3 . Instal l th e fo g ligh t i n th e revers e orde r o f removal .
4 . Afte r replacement , adjus t th e fo g light s t o loca l
requirements .
'9
9 - 0 1 models :
ProCarManuals.com