ACURA RL KA9 1996 Service Repair Manual

Troubleshooting Flowchar t
Check fo r a n ope n o r shor t i n th e
wir e (BA T line) :
Measur e voltag e betwee n th e
PGM-F I mai n rela y 4 P connecto r
termina l No . 3 an d bod y ground .
I s ther e batter y voltage ?
YES
Chec k fo r a n ope n o r shor t i n th e
wir e (IGS W line) :
1 . Tur n th e ignitio n switc h O N (II) .
2 . Measur e voltag e betwee n th e
PGM-F I mai n rela y 8 P connec -
to r termina l No . 5 an d bod y
ground .
I s ther e batter y voltage ?
YES
(To pag e 11-148 ) PGM-F
I MAI N RELA Y 8P CONNECTO R (C433 )
Wir e sid e o f femal e terminal s
NORepai r ope n in th e wir e betwee n
th e PGM-F I mai n rela y an d G10 1
(locate d a t middl e o f engine) .
NO
Repai r ope n o r shor t i n th e
wir e betwee n th e PGM-F I
mai n rela y an d th e No . 6 EC U
(PCM ) (2 0 A ) fuse .
Replac e th e No . 6 EC U (PCM )
(2 0 A ) fus e in th e under-das h
fuse/rela y box . PGM-F
I MAI N RELA Y 4P CONNECTO R (C432 )
Wir e sid e o f femal e terminal s
NO
Repai r ope n o r shor t i n th e
wir e betwee n th e PGM-F I
mai n rela y an d th e No . 2 2
FUE L PUM P (2 0 A ) fuse .
Replac e th e No . 2 2 FUE L PUM P
(2 0 A ) fus e in th e under-das h
fuse box .
YES
Is ther e continuity ?
Engin
e wil l no t start .
Inspectio n o f PGM-F I mai n
rela y an d rela y harness .
Chec k fo r a n ope n in th e wir e (PG 1
line) :1. Tur n th e ignitio n switc h OFF .
2 . Disconnec t th e PGM-F I mai n
rela y 4 P connecto r an d 8 P
connector .
3 . Chec k fo r continuit y betwee n
th e PGM-F I mai n rela y 8 P
connecto r termina l No . 7 an d
bod y ground .
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Fuel Suppl y Syste m
PGM-F I Mai n Rela y (cont'd )
(From pag e 11-147 )
Chec k fo r a n ope n i n th e wir e
(IGS W line) :
Measur e voltag e betwee n th e
PGM-F I mai n rela y 4 P connecto r
termina l No . 4 an d bod y ground .
I s ther e batter y voltage ?
YES
Chec k fo r a n ope n o r shor t i n th e
wir e (ST S line) :
1. Tur n th e ignitio n switc h to th eSTAR T (III ) positio n (trans -mission in o r position) .2. Measur e th e voltag e betwee n
th e PGM-F I mai n rela y 8 P con -
necto r termina l No . 3 an d
bod y ground .
I s ther e batter y voltage ?
YES
Chec k fo r a n ope n i n th e wir e(FLR 1 line) :1. Tur n th e ignitio n switc h OFF .2. Disconnec t th e PC M connec -tor A (2 6 P ) fro m th e PCM .3. Chec k fo r continuit y betwee n
th e PGM-F I mai n rela y 8 P
connecto r termina l No . 2 an d
PC M connecto r termina l A4 . PGM-F
I MAI N RELA Y 4P CONNECTO R (C432 )
IGSW(BLK/YEL )
NO
Repai r ope n o r shor t i n th e
wir e betwee n th e PGM-F I
mai n rela y an d th e No . 2 5 I G
COI L (3 0 A ) fuse .
Replac e th e No . 2 5 I G COI L
(3 0 A ) fus e in th e under-das h
fuse/rela y box . Wir
e sid e o f femal e terminal s
PGM-F I MAI N RELA Y 8 P CONNECTO R (C433 )
NO
Repai r ope n o r shor t i n th e
wir e betwee n th e PGM-F I
mai n rela y an d th e No . 1 4
STARTE R SIGNA L (7. 5 A ) fuse .
Replac e th e No . 1 4 STARTE R
SIGNA L (7. 5 A ) fus e i n the
under-das h fus e box . 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
the PC M (A4 ) an d the PGM-F I
mai n relay . PC
M CONNECTO R A (26P )
Wir e sid e o f femal e terminal s
(T o pag e 11-149 )
YES
NO
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(From pag e 11-148 )
Chec k fo r a n ope n i n th e wire s
(IGP1 , IGP 2 lines) :
1 . Reconnec t th e PC M connecto r
A (26P) .2. Reconnec t th e PGM-F I mai n
rela y 4 P an d 8 P connectors .
3 . Tur n th e ignitio n switc h O N (II) .
4 . Measur e voltag e betwee n
PC M connecto r terminal s
A13, B1, an d A12 .
PCM CONNECTOR S
Wir e sid e o f femal e terminal s
I s ther e batter y voltage ?
YES
Repai r ope n i n th e wir e
betwee n th e PC M (A13 , B1 )
an d th e PGM-F I mai n relay .
Replac e th e PGM-F I mai n
relay .
Chec k fo r a n ope n in th e PCM :
1. Tur n th e ignitio n switc h OFF .2. Measur e voltag e betwee n
PC M connecto r terminal s A 4
an d A1 2 whe n th e ignitio nswitch i s firs t turne d o n fo r 2seconds .
I s ther e 1.0 V o r less ?
YES
Substitut e a known-goo d PC Mand rechec k (se e pag e 11-42 fo r
immobilize r information) . I f pre -
scribe d voltag e i s no w available ,
replac e th e origina l PCM .
Chec k th e PGM-F I mai n rela y
(se e pag e 11-146 ).N O
NO
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Fuel Suppl y Syste m
Fuel Tan k
'96 - 9 9 models :
Replacemen t
D o no t smok e whil e workin g o n fue l system . Kee p ope n flam e awa y fro m you r wor k area .
1 . Reliev e th e fue l pressur e (se e pag e 11-132 ).
2 . Remov e th e sea t cushio n (se e sectio n 20 ).
3 . Remov e th e acces s pane l fro m th e floor .
4 . Disconnec t th e 2 P an d 3 P connector s an d harnes s clip .
5 . Jac k u p th e vehicle , an d suppor t i t wit h jackstands .
6 . Disconnec t th e muffle r mount .
7 . Remov e th e hea t shield .
8 . Remov e th e fue l tan k cover .
9 . Remov e th e drai n bolt , an d drai n th e fue l int o a n approve d container .
10 . Disconnec t th e hose s (se e pag e 11-129 ). Slid e bac k th e clamps , the n twis t hose s a s yo u pull , t o avoi d damagin g them .
11 . Plac e a jack , o r othe r support , unde r th e tank .
12 . Remov e th e stra p nuts , an d le t th e strap s fal l free .
13 . Remov e th e fue l tank .
I f i t stick s o n th e undercoa t applie d t o it s mount , carefull y pr y i t of f th e mount .
14 . Instal l th e drai n bol t wit h a ne w washer , the n coa t th e drai n bol t wit h Noxrus t 124B . Allo w th e Noxrus t t o dr y fo r 2 0
minutes .
15 . Instal l th e remainin g part s i n th e revers e orde r o f removal .
3P CONNECTO R
2 P CONNECTO R
BASE GASKE T
Replace .
38 N- m(3.9 kgf-m ,
2 8 Ibf-ft ) FUE
L TAN KSTRA P
WASHE RReplace .
DRAIN BOL T
4 9 N- m (5. 0 kgf-m , 3 6 Ibf-ft )
FUE L TAN K
COVE R
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'00 - 0 1 models :
Replacemen t
D o no t smok e whil e workin g o n fue l system . Kee p ope n flam e awa y fro m you r wor k area .
1 . Reliev e th e fue l pressur e (se e pag e 11-132 ).
2 . Remov e th e sea t cushio n (se e sectio n 20 ).
3 . Disconnec t th e 10 P connecto r fro m th e fue l uni t wir e harness .
4 . Remov e th e acces s pane l fro m th e floor .
5 . Disconnec t th e 2 P an d 3 P connector s an d harnes s clip .
6 . Remov e th e Fue l Tan k vapo r recirculatio n valv e mountin g bol t an d Fue l Tan k vapo r recirculatio n valve .
7 . Remov e th e Vapo r signa l tub e fro m th e clips .
8 . Remov e th e fue l uni t wir e harnes s fro m th e acces s panel , an d pas s th e Fue l Tan k signa l tube .
9 . Jac k u p th e vehicle , an d suppor t i t wit h jackstands .
10 . Disconnec t th e muffle r mount .
11 . Remov e th e hea t shield .
12 . Remov e th e fue l tan k covers .
13 . Remov e th e drai n bolt , an d drai n th e fue l int o a n approve d container .
14 . Disconnec t th e hose s (se e pag e 11-129 ). Slid e bac k th e clamps , the n twis t hose s a s yo u pull , t o avoi d damagin g them .
15 . Plac e a jack , o r othe r support , unde r th e tank .
16 . Remov e th e stra p nuts , an d le t th e strap s fal l free .
17 . Remov e th e fue l tank .
I f i t stick s o n th e undercoa t applie d t o it s mount , carefull y pr y i t of f th e mount .
18 . Instal l th e drai n bol t wit h a ne w washer , the n coa t th e drai n bol t wit h Noxrus t 124B . Allo w th e Noxrus t t o dr y fo r 2 0
minutes .
19 . Instal l th e remainin g part s i n th e revers e orde r o f removal .
ACCESSPANEL
3P CONNECTO R FUE
L UNI T
WIR E HARNES S
38 N- m(3.9 kgf-m ,
2 8 Ibf-ft )
FUE L TAN K
COVER S
WIRE HARNES S 10
P CONNECTO R
2 P CONNECTO R
FUE L TAN K VAPO R
RECIRCULATIO N
VALVE
FUEL TAN KSTRA P
CLIPS
FUE L TAN K VAPO R SIGNA L
TUB E
WASHE RReplace .
DRAIN BOL T
4 9 N- m (5. 0 kgf-m , 3 6 Ibf-ft )
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Intake Air System

System Description

The system supplies air for all engine needs. It consists of the intake air pipe. Air Cleaner, intake air duct. Throttle Body,

Idle Air Control (IAC) Valve, idle air control thermal valve, and intake manifold.

A resonator in the intake air pipe provides additional silencing as air is drawn into the system.

IMRC SOLENOID VALVE 2

IMRC

SOLENOID

VALVE 1
IMRC

VACUUM

TANK

From No. 20 ECU

(PCM)
(20 A)

FUSE

(in the under-dash

fuse/relay box)

IMRC

DIAPHRAGM

VALVE 1
VARIOUS

SENSORS

THROTTLE BODY
INTAKE

AIR

DUCT
INTAKE

MANIFOLD
IDLE

ADJUSTING

SCREW
With

TCS

IDLE AIR

CONTROL

THERMAL

VALVE
IAC

VALVE
From PGM-FI

MAIN RELAY

IMRC

DIAPHRAGM

VALVE 2
IMRC

CHECK

VALVE

ENGINE

COOLANTProCarManuals.com

Air Cleaner

Air Cleaner Element Replacement

AIR CLEANER ELEMENT

Normal conditions:

Replace air cleaner element every

30,000 miles (48,000 km) or 24

months whichever comes first.

Severe conditions:

Clean air cleaner element every

15,000 miles (24,000 km) or 12

months and replace every 30,000

miles (48,000 km) or 24 months

whichever comes first.
AIR CLEANER HOUSING

COVER

AIR CLEANER HOUSINGProCarManuals.com

Intake Ai r Syste m
Throttl e Cabl e
Inspection/Adjustmen t
1 . Chec k tha t th e throttl e cabl e operate s smoothl y wit h
n o bindin g o r sticking . Repai r a s necessary .
2 . Chec k cabl e fre e pla y a t th e throttl e linkage . Cabl e
deflectio n shoul d b e 1 0 - 1 2 m m (3/ 8 - 1/ 2 in. )
ADJUSTIN G NU T
CABL EBRACKE T
DEFLECTIO N10 - 1 2 m m(3/ 8 - 1/ 2 in. )
3. I f deflectio n i s no t withi n specs , loose n th e locknut ,
turn th e adjustin g nu t unti l th e deflectio n is a s spec -
ified, the n retighte n th e locknut .
4 . Wit h th e cabl e properl y adjusted , chec k th e throttl e
valv e t o b e sur e i t open s full y whe n yo u pus h th e
accelerato r peda l t o th e floor . Als o chec k th e throttl e
valv e to b e sur e it return s t o th e idl e positio n whenev -
e r yo u releas e th e accelerato r pedal . Installatio
n
1 . Ope n th e throttl e valv e fully , the n instal l th e throttl e
cabl e i n th e throttl e linkag e an d instal l th e cabl e
housin g in th e cabl e bracket .
LOCKNU TINNER CABL E
ADJUSTIN GNUT
THROTTL ELINKAGE
CABLEBRACKE T
2. Hol d th e cabl e sheath , removin g al l slac k fro m th e
cable .
3. Tur n th e adjustin g nu t unti l i t i s 3 m m (1/ 8 in. ) awa y
fro m th e cabl e bracket .
LOCKNU T9.8 N- m(1.0 kg-m ,7.2 Ibf-ft )
CABL EBRACKE T
4. Tighte n th e locknut . Th e cabl e deflectio n shoul d no w
b e 1 0 - 1 2 m m (3/ 8 - 1/ 2 in.) . I f not , se e inspection /
adjustment .
ADJUSTINGNUT
LOCKNU T
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Throttle Bod y
Descriptio n
The throttl e bod y i s a single-barre l side-draf t type . Th e
lowe r portio n o f th e throttl e valv e i s heate d b y engin e
coolan t fro m th e cylinde r head . Th e idl e adjustin g screw ,
whic h increases/decrease s bypas s air , an d th e Evapora -
tiv e Emissio n (EVAP ) Caniste r por t ar e locate d o n th e to p
of th e throttl e body .
THROTTL E
POSITIO N
(TP)SENSO R
IDLE ADJUSTIN GSCREW
THROTTL EVALVE
THROTTL ESTOPSCRE W(Do no t adjust. )
Inspectio n
1 . Disconnec t th e vacuu m hos e (t o th e EVA P canister )
fro m th e to p o f th e throttl e body ; connec t a vacuu m
gaug e t o th e throttl e body .
VACUU M PUMP/GAUGE , 0 - 3 0 in.H g
A973 X - 04 1 - XXXX X
2. Allo w th e engin e t o idle , an d chec k tha t th e gaug e
indicate s n o vacuum .
I f ther e i s vacuum , chec k th e throttl e cabl e (se e
pag e 11-154 ).
3 . Chec k tha t vacuu m is indicate d o n th e gaug e whe n
the throttl e is opene d slightl y fro m idle .
If th e gaug e indicate s n o vacuum , chec k th e throttl e
bod y port . I f th e throttl e bod y por t i s clogged , clea n
i t wit h carbureto r cleaner .
4 . Sto p th e engine , an d chec k tha t th e throttl e cabl e
operate s smoothl y withou t bindin g o r sticking .
I f ther e ar e an y abnormalitie s i n th e abov e steps ,
chec k for .
• Excessiv e wea r o r pla y i n th e throttl e valv e shaft .
• Stick y o r bindin g throttl e leve r a t ful l clos e posi -
tion.
• Clearanc e betwee n throttl e sto p scre w an d throt -
tl e leve r a t th e full y close d position .
There shoul d b e
n o clearance .
THROTTL E LEVE R
THROTTL E
LEVER
THROTTL E STO P SCRE W
(D o no t adjust. )
Replace th e throttl e bod y i f ther e i s excessiv e pla y
i n th e throttl e valv e shaf t o r i f th e shaf t i s bindin g o r
sticking .
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Intake Ai r Syste m
TP SENSO R
22 N- m(2.2 kgf-m ,
1 6 Ibf-ft )
CRUISE CONTRO L CABL E
*: '0 0 - 0 1 model s
O-RIN G
IDL E ADJUSTIN G
SCREW
TPSENSO R
NOTE:
• D o no t adjus t th e throttl e sto p screw .
• Afte r reassembly , adjus t th e throttl e cabl e (se e pag e 11-154 ) an d th e cruis e contro l cabl e (se e sectio n 4) .
THROTTL ECABLE
GASKE TReplace .
Disassembl y
Wit h TCS/VSA* : Remov e th e TCS/VSA * contro l valv e (se e sectio n 19 ).
Throttl e Bod y (cont'd )
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