oil pressure ACURA RL KA9 1996 Service Repair Manual

Random Misfir e
The HD S o r th e sca n too l indicate s Diagnosti c Troubl e Cod e (DTC ) P0300 , an d
som e o f P120 1 - P120 6 o r som e o f P130 1 - P1306 : Rando m misfire .
Descriptio n
Misfire detectio n i s accomplishe d b y monitorin g th e voltag e o f th e spar k plu g wit h th e spar k plu g voltag e senso r whic h i s
buil t i n to th e ignitio n coil .
If misfirin g stron g enoug h t o damag e th e catalys t i s detected , th e MI L wil l blin k durin g th e tim e o f it s occurrence , an d DT C
P0300 , som e
of DTC s P120 1 throug h P1206 or som e of DTC s P130 1 throug h P1306 will be stored . Then , after misfir e has
ceased , th e MI L wil l com e o n an d sta y o n wheneve r th e ignitio n switc h is O N (II) .
I f misfirin g tha t increase s emission s i s detecte d during two consecutiv e drivin g cycles , th e MI L wil l com e on , an d DT C
P0300 , som e o f DTC s P120 1 throug h P120 6 o r som e o f DTC s P130 1 throug h P130 6 wil l b e stored .
NOTE : I f som e o f th e DTC s liste d belo w ar e store d a t th e sam e tim e a s a misfir e DTC , troubleshoo t thos e DTC s first , the n
troubleshoo t th e misfir e DTC .
P1128 , P1129 : MA P senso r
P0171 , P0172 , P0174 , P0175 : Fue l meterin g
P0401 , P0404 , P0406 : EG R syste m
P0345 , P0349 , P0390 , P0394 , P1336 , P1337 , P1386 , P1387 : CKP/CM P (CKP/CYP ) senso r
P0506 , P0507 : Idl e Contro l Syste m
P0511 : IA C valv e
Possibl e Caus e
Fuel pum p insufficien t fue l pressure , amoun t o f flo w
Fue l lin e clogging , blockage , leakag e
Fue l filte r cloggin g
Fue l pressur e regulato r stuc k ope n
EG R syste m malfunctio n
Ignitio n coi l wir e open , leakag e
Ignitio n contro l modul e malfunctio n
IA C valv e malfunctio n
Fas t idl e therm o valv e malfunctio n
Carbo n deposit s o n valve s
Compressio n lo w
Gasolin e doe s no t mee t Owner' s Manua l spec. , lac k o f fue l
Troubleshootin g
By test-driving , determin e th e condition s during which misfir e occurs . Dependin g o n thes e conditions , tes t i n th e orde r
describe d i n th e tabl e below .
NOTE : I f misfir e doesn' t recur , som e possibl e cause s ar e fue l tha t doesn' t mee t owner' s manua l spec , lac k o f fuel , carbo n
deposit s o n spar k plug , etc .
11-8 5 sectio n 4 section 4
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Valve Guides
Reaming
NOTE: Fo r ne w valv e guide s only .
1 . Coa t bot h th e reame r an d valv e guid e wit h cuttin g
oil.
2. Rotat e th e reame r clockwis e th e ful l lengt h o f th e
valv e guid e bore .
REAME R HANDL EVALVE GUID EREAMER , 5. 5 m m
07HAH-PJ7010 B
Tur n reame r i n
clockwis e directio nonly.
3. Continu e t o rotat e th e reame r clockwis e whil e
removin g i t fro m th e bore .
4 . Thoroughl y was h th e guid e i n detergen t an d wate r
t o remov e an y cuttin g residue .
5 . Chec k th e clearanc e wit h a valv e (se e pag e 6-31 ).
Verif y tha t th e valv e slide s i n th e valv e guid e with -
ou t exertin g pressure .
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Illustrated Index

Lubricate all internal parts with engine oil during reassembly.

NOTE: Use liquid gasket, Part No. 08718 - 0001 or 08718 - 0003.

BALANCER

SHAFT

O-RING

Replace.

DOWEL

PIN

BALANCER GEAR

CASE

Apply liquid gasket to

the block mating

surface.
BALANCER SHAFT

HOLDER

Apply liquid gasket around

the oil hole to the block

mating surface.

O-RING

Replace.
6 x 1.0 mm

12 N-m (1.2 kgf-m,

8.7 Ibf-ft)
BALANCER SHAFT

REAR COVER

6 x 1.0 mm

12 N-m (1.2 kgf-m,

8.7 Ibf-ft)

8 x
1.25
mm

25 N-m (2.5 kgf-m,

18 Ibf-ft)

REAR BALANCER

WEIGHT

O-RING

Replace.

OUTER PIPE

O-RING

Replace.
ENGINE OIL PRESSURE

SWITCH

18 N-m (1.8 kgf-m, 13 Ibf-ft)

1/8 in. BSPT (British

Standard Pipe Taper)

28 threads/inch. Use

proper liquid sealant.
6 x 1.0 mm

12 N-m (1.2 kgf-m,

8.7 Ibf-ft)
O-RING

Replace.ProCarManuals.com

3. I f th e switc h fail s t o operate , chec k th e engin e oi l
level . I f th e engin e oi l leve l i s OK , chec k th e engin e
oi l pressure .
YEL/RED WIR E(Covere d wit hinsulation )
Testing
1. Remov e th e YEL/RE D wir e fro m th e engin e oi l pres -
sur e switch .
2 . Chec k fo r continuit y betwee n th e positiv e termina l
an d th e engin e (ground) .
• Ther e shoul d b e continuit y wit h th e engin e
stopped .
• Ther e shoul d b e n o continuit y wit h th e engin e
running .
POSITIV E TERMINA LENGIN
E OI L
PRESSUR E SWITC H
1 8 N- m (1. 8 kgf-m ,
1 3 Ibf-ft )
Apply liqui d sealan tto th e threads .
Oil Pressur e Switc hOil Pressur e
Testing
If th e oi l pressur e indicato r ligh t stay s o n wit h th e
engin e running , chec k th e engin e oi l level . I f th e oi l leve l
i s correct :
1 . Connec t a tachometer .
2 . Remov e th e engin e oi l pressur e switch , an d instal l
a n oi l pressur e gauge .
ADAPTE R(1/8"-28 BSPT ) ENGIN
E OI L PRESSUR E
SWITC H MOUNTIN GHOLE
OIL PRESSUR EGAUGE(Commerciall y available )
3. Star t th e engine . Shu t i t of f immediatel y i f th e gaug e
register s n o oi l pressure . Repai r th e proble m befor e
continuing .
4. Allo w th e engin e to reac h operatin g temperatur e (fa n
come s o n a t leas t twice) . Th e pressur e shoul d be :
Engin e Oi l Temperature : 176° F (80°C )
Engin e Oi l Pressure :
A t Idle : 7 0 kP a (0. 7 kgf/cm
2, 1 0 psi )
minimu m
At 3,00 0 rpm : 34 0 kP a (3. 5 kgf/cm2, 5 0 psi )
minimu m
I f oi l pressur e i s NO T withi n specifications , inspec t
th e oi l pum p (se e pag e 8-14 ).
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Cap Testing
Testing

1. Remove the radiator cap, wet its seal with engine

coolant, then install it on the pressure tester.

RADIATOR

CAP

2. Apply a pressure of 93- 123 kPa (0.95- 1.25 kgf/cm2,

14-18 psi).

3. Check for a drop in pressure.

4. If the pressure drops, replace the cap.
1. Wait until the engine is cool, then carefully remove

the radiator cap and fill the radiator with engine

coolant to the top of the filler neck.

2. Attach the pressure tester to the radiator and apply

a pressure of 93-123 kPa (0.95 - 1.25 kgf/cm2, 14 -

18
psi).

RADIATOR PRESSURE

TESTER

(Commercially available)

3. Inspect for engine coolant leaks and a drop in pres-

sure.

4. Remove the tester and reinstall the radiator cap.

NOTE: Check for engine oil in the coolant and/or

coolant in the engine oil.
RADIATOR PRESSURE TESTER

(Commercially available)

SMALL ADAPTOR

(for 32 mm neck, low profile)
SMALL ADAPTOR

(for 32 mm neck, low profile)ProCarManuals.com

Fan Controls

Troubleshooting

NOTE: The numbers in the table show the troubleshooting sequence.

G301

G302

G301

G302

G402

G402

Fan Control Module Terminals

FAN CONTROL

MODULE
Terminal Wire
Connects to

1

2

3

4

5

6

7

8

9

10

11

12
GRN/RED

BLK

RED/WHT

LT GRN/BLK

GRN/BLK

BLK/YEL

PNK

BLU/ORN

BLU/GRN
A/C pressure switch

Not used

Ground

A/C pressure switch

Radiator fan relay (Coil )

Radiator fan control sensor

IG2 (Main power supply)

PCM

Not used

Condenser fan relay (Coil )

Not used

Radiator fan control sensor
PCMProCarManuals.com

PGM-FI Syste m
Rando m Misfir e
The sca n too l indicate s Diagnosti c Troubl e Cod e (DTC ) P0300*3,
P1300*4 an d som e o f P120 1 - P120 6 o r som e o f P130 1 - P1306 :
Rando m misfire .
Descriptio n
Misfir e detectio n i s accomplishe d b y monitorin g th e voltag e o f th e spar k plu g wit h th e spar k plu g voltag e senso r whic h i s
buil t i n to th e ignitio n coil .
If misfirin g stron g enoug h t o damag e th e catalys t i s detected , th e MI L wil l blin k durin g th e tim e o f it s occurrence , an d DT C
P1300*3 o r P0300*4, som e o f DTC s P120 1 throug h P120 6 o r som e o f DTC s P130 1 throug h P130 6 wil l b e stored . Then , afte r
misfir e ha s ceased , th e MI L wil l com e o n an d sta y o n wheneve r th e ignitio n switc h i s O N (II) .
I f misfirin g tha t increase s emission s i s detecte d durin g tw o consecutiv e drivin g cycles , th e MI L wil l com e on , an d DT C
P1300*
3 o r P0300*4, som e o f DTC s P120 1 throug h P120 6 o r som e o f DTC s P130 1 throug h P130 6 wil l b e stored .
NOTE : I f som e o f th e DTC s liste d belo w ar e store d a t th e sam e tim e a s a misfir e DTC , troubleshoo t thos e DTC s first , the n
troubleshoo t th e misfir e DTC .
P0106*1, P1128*2, P1129*2: MA P senso r
P0171 , P0172 , P0174 , P0175 : Fue l meterin g
P0401 , P1491 , PU98 : EG R syste m
P0335 , P0336 , P1336 , P1337 , P1381 , P1382 , P1386 , P1387 : CKP/CY P senso r
P0505 : Idl e Contro l Syste m
PI508 : IA C valv e
*1 : '9 6 mode l onl y
*2 : '9 7 - 0 1 model s
*3: '9 6 - 9 7 model s
*4: '9 8 - 0 1 model s
Possibl e Caus e
Fuel pum p insufficien t fue l pressure , amoun t o f flo w
Fue l lin e clogging , blockage , leakag e
Fue l filte r cloggin g
Fue l pressur e regulato r stuc k ope n
EG R syste m malfunctio n
Ignitio n coi l wir e open , leakag e
Ignition contro l modul e malfunction
MA P senso r range/performance , poo r response*1
IA C valv e malfunctio n
Fas t idl e therm o valv e malfunctio n
Carbo n deposit s o n valve s
Compressio n lo w
Gasolin e doe s no t mee t Owner' s Manua l spec. , lac k o f fue l
Troubleshootin g
By test-driving , determin e th e condition s durin g whic h misfir e occurs . Dependin g o n thes e conditions , tes t i n th e orde r
describe d i n th e tabl e below .
NOTE : I f misfir e doesn' t recur , som e possibl e cause s ar e fue l tha t doesn' t mee t owner' s manua l spec , lac k o f fuel , carbo n
deposit s o n spar k plug , etc .
11-166 11-69 section 4 section 4 section 6 11-102
and
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Fuel Supply System

Injectors (cont'd)

13. Slide new cushion rings onto the injectors.

14. Coat new O-rings with clean engine oil, and put them on the injectors.

15. Insert the injectors into the fuel rail first.

16. Coat new seal rings with clean engine oil and press them into the intake manifold.

17. To prevent damage to the O-ring, install the injectors in the fuel rail first, then install them in the intake manifold.

FUEL

RAILS

18. Install and tighten the retainer nuts.

19. Connect the 3P connector to the MAP sensor.

20. Connect the fuel hose to the fuel rail.

21. Connect the vacuum pipe.

22. Connect the vacuum hose and fuel return hose to the fuel pressure regulator.

23. Install the connectors on the injectors.

24. Connect the PCV valve.

25. Turn the ignition switch ON (II), but do not operate the starter. After the fuel pump runs for approximately 2 seconds,

the fuel pressure in the fuel line rises. Repeat this two or three times, then check whether there is any fuel leakage.

26. Install the engine cover.

27. Install the strut bar.ProCarManuals.com

CAUTION: If either end of the special tool is set over an

area of the spring retainer which is unsupported by the

return spring, the retainer may be damaged. Be sure the

special tool is adjusted to have full contact with the

spring retainer.

Set here.

SPECIAL TOOL

SPRING RETAINER

4. Compress the return spring with the special tool.
Remove the snap ring. Then remove the special tools,

spring retainer and return spring.

SPECIAL TOOL

SNAP RING

SPRING RETAINER

6. Wrap a shop rag around the clutch drum, and apply

air pressure to the oil passage to remove the piston.

Place a finger tip on the other end while applying

air pressure.

CLUTCH

DRUM

PISTON
OSHA - APPROVED

30 psi NOZZLE
Do not set here.
SPECIAL TOOL

RETURN SPRINGProCarManuals.com

Wheel Spee d an d Modulato r Contro l
SPEED VEHICL E SPEE D
REFERENC E VEHICL E SPEE D
PRESSUR E
OUTLETVALVE
INLETVALV E
MOTO R
ON
OF F
WHEE L SPEE D
TIM E
Whe n th e whee l spee d drop s sharpl y belo w th e vehicl e speed , th e inle t valv e close s t o retai n th e calipe r flui d pressure .
Whe n th e whee l spee d drop s further , th e outle t valv e open s momentaril y t o reduc e th e calipe r flui d pressure . Th e pum p
moto r start s a t thi s time .
A s th e whee l spee d i s restored , th e inle t valv e open s momentaril y t o increas e th e calipe r flui d pressure .
Whee l Senso r
Th e whee l sensor s ar e th e magneti c contactles s type . A s th e gea r pulse r teet h rotat e pas t th e whee l sensor' s magnetic
coil , A C curren t i s generated . Th e A C frequenc y change s i n accordanc e wit h th e whee l speed . Th e AB S contro l uni t detect s
th e whee l senso r signa l frequenc y an d thereb y detect s th e whee l speed .
GEAR PULSE R
WHEEL SENSO R a
t HIG H SPEE D
at LO W SPEE D
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