ACURA RL KA9 1996 Service Repair Manual

Idle Contro l Syste m
Brake Peda l Positio n Switc h Signa l
Are th e brak e light s o n withou t
depressin g th e brak e pedal ? Inspec
t th e brak e peda l positio n
switc h (se e sectio n 19 ).
N O
Depres s th e brak e pedal .
D o th e brak e light s com e on ?
YES
Is th e fus e OK ?NO
Chec k fo r a n ope n i n th e wir e
(BKS W line) :
1 . Depres s th e brak e pedal .
2 . Measur e voltag e betwee n PC M
connecto r terminal s E 2 an d
A2 6 wit h th e brak e peda l de -
pressed . —
Repai r shor t i n th e wire be-
twee n th e brak e peda l posi -
tio n switc h an d th e STO P
HOR N (1 5 A ) fuse .
— Replac e th e STO P HOR N (1 5 A )
fuse .
Wire 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
th e PC M (E2 ) an d th e brak e peda l
positio n switch .
Brak e peda l positio n switc h sig -
nal i s OK .
YES
NO
— Repai r ope n i n th e wir e be -
twee n th e brak e peda l posi -
tio n switc h an d th e STO P
HOR N (1 5 A ) fuse .
— Inspec t th e brak e peda l posi -
tio n switc h (se e sectio n 19 ).
PC M CONNECTOR S
YES
NOInspec t th e STO P HOR N (1 5 A )
fus e i n th e under-hoo d fuse / rela y
box.
YES
Inspectio n o f Brak e Peda l Positio n
Switc h Signal .
This signal s th e PC M whe n th e brak e peda l i s depressed .
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Idle Ai r Contro l Therma l Valv e
Descriptio n
T o preven t errati c runnin g whe n th e engin e i s warmin g
up , i t i s necessar y t o rais e th e idl e speed . Th e idl e ai r
contro l therma l valv e i s controlle d b y a thermowa x
plunger . Whe n th e engin e i s cold , th e engin e coolan t
surroundin g th e thermowa x contract s th e plunger ,
allowin g additiona l ai r t o b e bypasse d int o th e intak e
manifol d s o tha t th e engin e idle s faster . Whe n th e
engin e reache s operatin g temperature , th e valv e closes ,
reducin g th e amoun t o f ai r bypassin g int o th e intak e
manifold .
IDLE AI R
CONTRO L
THERMA LVALVE
IDLEADJUSTIN GSCREWIAC VALV E
AIR BYPAS SVALVE
WAX
Inspectio n
NOTE : Th e idl e ai r contro l therma l valv e i s factor y
adjusted ; i t shoul d no t b e disassembled .
1 . Remov e th e cove r o f th e idl e ai r contro l therma l
valve.
2. Star t th e engine .
3 . Pu t you r finge r o n th e valv e sea t area , an d mak e sur e
tha t ther e i s ai r flo w wit h th e engin e col d (engin e
coolan t temperatur e belo w 86°F , 30°C ) an d idling .
O-RING SReplace .
12 N- m(1.2 kgf-m , 8. 7 Ibf-ft )
4. 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 .
5 . Chec k tha t th e valv e i s completel y closed . I f not , ai r
suctio n ca n b e fel t i n th e valv e sea t area .
I f an y suctio n is felt , th e valv e is leaking .
Chec k engin e coolan t leve l an d fo r ai r i n th e engin e
coolin g syste m (se e sectio n 10 ).
I f th e coolin g syste m is OK , replac e th e idl e ai r contro l
therma l valv e an d recheck .
NOTE : I f th e cove r o f idl e ai r contro l therma l valv e wa s
removed , d o th e PC M rese t procedure .
IDLE AI RCONTRO LTHERMALVALVE
If ther e i s n o ai r flow , replac e th e idl e ai r contro l
therma l valv e an d retest .
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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
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6. Tur n th e ignitio n switc h OFF .
7. Reconnec t th e 2 P connecto r o n th e IA C valve , the n
d o th e PC M rese t procedure .
NOTE : Th e PC M memor y settin g i s neede d afte r
resettin g th e PCM .
8 . Restar t an d idl e th e engin e wit h no-loa d condition s
fo r on e minute , the n chec k th e idl e speed .
NOTE : (Canada ) Pul l th e parkin g brak e leve r up .
Star t th e engine , the n chec k tha t th e headlight s ar e
off.
Idle spee d shoul d be :
650 5 0 rp m
(in Par k o r neutral )
NOTE: I f th e idl e spee d i s no t withi n specification ,
se e Sympto m Char t o n pag e 11-44 .
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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

Fuel Supply System

Fuel Lines

Check fuel system lines, hoses, fuel filter, and other components for damage, leaks or deterioration, and replace if neces-

sary.

'96 - 99 models:

22 N-m

(2.2 kgf-m, 16 Ibf-ft)
22 N-m

(2.2 kgf-m,

16 Ibf-ft)

'00 - 01 models:
37 N-m

(3.8 kgf-m, 27 Ibf-ft)

22 N-m

(2.2 kgf-m, 16 Ibf-ft)
22 N-m

(2.2 kgf-m

16 Ibf-ft)

37 N-m

(3.8 kgf-m, 27 Ibf-ft)ProCarManuals.com

'96 - 99 models:

Check all hose clamps and retighten if necessary.

EVAPORATIVE EMISSION

(EVAP) TWO WAY VALVE

EVAPORATIVE EMISSION

(EVAP) CONTROL

CANISTER

10 -
15
mm

(0.39
-
0.59
in)
Clamp in the middle.
Clamp in the middle.
FUEL

TANK
FUEL

FILTER
To

FUEL

PRESSURE

REGULATOR
BASE

GASKET

Replace.
BASE GASKET

Replace.
FUEL PUMP

ASSEMBLY
FUEL GAUGE SENDING

UNIT ASSEMBLY

FUEL TANK EVAPORATIVE

EMISSION (EVAP)

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Fuel Supply System

Fuel Lines (cont'd)

'00 - 01 models:

Check all hose clamps and retighten if necessary.

A: Do not disconnect.

To FUEL

FILTER
FUEL TANK

VAPOR CONTROL

VALVE
FUEL GAUGE SENDING

UNIT ASSEMBLY

Clamp in the middle
Clamp in the middle
FUEL

TANK
FUEL PUMP

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Fuel Tube/Quick-Connec t Fitting s
Precaution s
Do no t smok e whil e workin g o n th e fue l
system . Kee p ope n flame s awa y fro m you r wor k area .
Th e fue l tube/quick-connec t fitting s assembl y connect s
th e in-tan k fue l pum p wit h th e fue l fee d pipe . Fo r remov -
in g o r installin g th e fue l pum p an d fue l tank , i t i s neces -
sar y t o disconnec t o r connec t th e quick-connec t fittings .
Pay attentio n to following :
• Th e fue l tube/quick-connec t fitting s assembl y i s no t
heat-resistant ; b e carefu l no t t o damag e i t durin g
weldin g o r othe r heat-generatin g procedures .
• Th e fue l tube/quick-connec t fitting s assembl y i s no t
acid-proof ; d o no t touc h i t wit h a sho p towe l whic h
wa s use d fo r wipin g batter y electrolyte . Replac e th e
fue l tube/quick-connec t fitting s assembl y i f i t cam e
int o contac t wit h electrolyt e o r somethin g similar .
• Whe n connectin g o r disconnectin g th e fue l tube /
quick-connec t fitting s assembly , b e carefu l no t t o
ben d o r twis t i t excessively . Replac e it i f damaged .
A disconnecte d quick-connec t fittin g ca n b e reconnected ,
bu t th e retaine r o n th e matin g pip e canno t b e reuse d
onc e i t ha s bee n remove d fro m th e pipe . Replac e th e
retaine r whe n
• Replacin g th e fue l pump .
• Replacin g th e fue l fee d pipe .
• I t ha s bee n remove d fro m th e pipe .
• I t i s damaged .
ACCESS PANE L
RETAINE R
Disconnectio n
D o no t smok e whil e workin g o n th e fue l
system . Kee p ope n flame s awa y fro m you r wor k area .
1 . Reliev e fue l pressur e (se e pag e 11-132 ).
2 . Chec k th e fue l quick-connec t fitting s fo r dirt , an d
clea n if necessary .
3 . Hol d th e connecto r wit h on e han d an d pres s dow n
th e retaine r tab s wit h th e othe r hand , the n pul l th e
connecto r off .
NOTE :
• B e carefu l no t t o damag e th e pip e o r othe r parts .
D o no t us e tools .
• I f th e connecto r doe s no t move , kee p th e retaine r
tab s presse d down , an d alternatel y pul l an d pus h
th e connecto r unti l i t come s of f easily .
• D o no t remov e th e retaine r fro m th e pipe ; onc e
removed , th e retaine r mus t b e replace d wit h a
ne w one .
LOCKIN G PAW L
RETAINE R TA B
PIPE
CONNECTO R
Press down .
4. Chec k th e contac t are a o f th e pip e fo r dir t an d dam -
age.
• I f th e surfac e i s dirty , clea n it .
• I f th e surfac e i s rust y o r damaged , replac e th e
fue l pum p o r fue l fee d pipe .
CONTAC T ARE A
CONNECTO R
RETAINER
PIPE
FUE L TUB E
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Fuel Supply System

Fuel Tube/Quick-Connect Fittings (cont'd)

5. To prevent damage and keep out foreign matter,

cover the disconnected connector and pipe end

with plastic bags.

PLASTIC BAGS

The retainer cannot be reused once it has been

removed from the pipe.

Replace the retainer when

• replacing the fuel pump.

• replacing the fuel feed pipe.

• it has been removed from the pipe.

• it is damaged.
Connection

Do not smoke while working on the fuel

system. Keep open flames away from your work area.

1. Check the pipe contact area for dirt and damage,

and clean if necessary.

CONTACT AREA

PIPE

2. Insert a new retainer into the connector if the retainer

is damaged, or after

• replacing the fuel pump.

• replacing the fuel feed pipe.

• removing the retainer from the pipe.

New RETAINER

(Insert into

the connector.)

CONNECTOR
FUEL

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