Test ACURA TL 1995 Service Repair Manual

Cylinder Head s
Illustrate d Inde x
CAUTION :
To avoi d damage , wai t unti l th e engin e coolan t temperatur e drop s belo w 100° F (38°C ) befor e removin g a cylinde r
head.
When handlin g a meta l gasket , tak e car e no t t o fol d it o r damag e th e contac t surface .
NOTE: Us e ne w O-ring s an d gasket s whe n reassembling .
6 x 1. 0 m m12 N- m (1. 2 kgf-m ,8.7 Ibf-ft )
RIGHT CAMSHAF T
PULLE Y
8 x 1.2 5 mm31 N- m (3. 2 kgf-m ,23 Ibf-ft )
6 x 1. 0 m m12 N- m (1. 2 kgf-m ,8.7 Ibf-ft ) ENGIN
E OI L TEMPERATUR E
SWITC H
2 7 N- m (2. 8 kgf-m ,
2 0 Ibf-ft )
Testing , pag e 8- 6HEA D COVE R GASKE TReplace whe n leaking , damage dor deteriorated .Apply liqui d gaske t a t th e fou r corner sof th e recesses , pag e 6-3 6
CYLINDE R HEA D COVE R
Refe r t o pag e 6-3 6 whe n
installing .
RUBBER SEAL S
Replac e whe n damage d
or deteriorated .
GROMMET
6 x 1. 0 m m12 N- m (1. 2 kgf-m ,
8. 7 Ibf-ft ) RUBBE
R SEA L
Replac e whe n damage dor deteriorated .
LEFT BAC K COVE R
8 x 1.2 5 mm31 N- m (3. 2 kgf-m , 2 3 Ibf-ft )6 x 1. 0 m m12 N- m (1. 2 kgf-m , 8. 7 Ibf-ft )
LEFT CAMSHAF T
PULLE Y CKP/CY
P
SENSO R
RIGH
T BAC K
COVE R O-RIN
G
Replace .
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Oil Pressur e Engin
e Oi l Temperatur e Switc h
Testin gTestin g
If th e oi l pressur e warnin g 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 cor -
rect :
1 . Connec t a tachometer .
2 . Remov e th e engin e oi l pressur e switc h an d instal l
a n oi l pressur e gauge .
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
before 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 withi n specifications , replac e th e
oi l pressur e switc h an d recheck .
• 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 8-12 ).
ADAPTE R(1/8"-28 BSPT )
ENGIN E OI L PRESSUR ESWITCH MOUNTIN GHOLE
OIL PRESSUR E
GAUG E
1. Remov e th e engin e oi l temperatur e switc h fro m th e
righ t cylinde r hea d cove r (se e pag e 6-12 ).
2 . Suspen d th e engin e oi l temperatur e switc h in a con -
taine r o f engin e oi l a s shown .
ENGINE OI LTEMPERATUR ESWITCH
THERMOMETE R
ENGINEOIL
3. Hea t th e engin e oi l an d chec k th e temperatur e wit h
a thermometer .
CAUTION : D o no t le t th e thermomete r touc h th e
botto m of th e ho t container .
4 . Measur e th e resistanc e betwee n th e A an d B termi -
nal s accordin g to th e table .
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Radiator
Illustrate d Inde x
Syste m is unde r hig h pressur e whe n th e
engin e i s hot . T o avoi d dange r o f releasin g scaldin g
coolant , remov e th e ca p onl y whe n th e engin e is cool .
Tota l Coolin g Syste m Capacit y (Includin g heate r an d
reservoir )
7.7 (8. 1 US qt , 6. 8 Im p qt )
Reservoi r capacity : 0.6 5 (0.6 9 U S qt , 0.5 7 Im p qt ) CAUTION
: Whe n pourin g engin e coolant , b e sur e t o
shu t th e rela y bo x li d an d no t t o spil l coolan t o n th e elec -
trica l part s o r th e painte d portion . I f an y coolan t spills ,
rins e it of f immediately .
NOTE:
• Chec k al l coolin g syste m hose s fo r damage , leak s o r
deterioratio n an d replac e if necessary .
• Chec k al l hos e clamp s an d retighte n if necessary .
• Us e ne w O-ring s whe n reassembling .
RADIATOR CA PPressur e testing , pag e 10- 6RADIATO REngine coolan t
Refillin g an d bleeding , pag e 10- 5
Leak test , pag e 10- 6Inspec t soldere d joint s an dseam s fo r leaks .Blow ou t dir t fro m betwee ncore fin s wit h compresse d air .If insects , etc. , ar e cloggin gradiator , was h the m of f wit hlow-pressur e water .
AUTOMATI C TRANSMISSIO NFLUID (ATF ) COOLE R HOSE SRefer t o sectio n 1 4 whe ninstalling .
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Radiator

Cap Testing

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

coolant, then install it on the pressure tester.

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.

RADIATOR PRESSURE TESTER

(Commercially available)
Testing

RADIATOR

CAP

SMALL ADAPTOR

(for 32 mm neck, low profile)
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).

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.

SMALL ADAPTOR

(for 32 mm neck, low profile)

RADIATOR PRESSURE

TESTER

(Commercially available)ProCarManuals.com

Thermostat ECT Switc h
Testin g
Replac e th e thermosta t i f i t i s ope n a t roo m temperature .
T o tes t a close d thermostat :
1 . Suspen d th e thermosta t i n a containe r o f wate r a s
shown .
2 . Hea t th e water , an d chec k th e temperatur e wit h a
thermometer . Chec k th e temperatur e a t whic h th e
thermosta t firs t opens , an d a t whic h i t i s full y open .
CAUTION : D o no t le t th e thermomete r touc h th e
botto m o f th e ho t container .
3. Measur e lif t heigh t o f th e thermosta t whe n it i s full y
open .
STANDAR D THERMOSTA T
Lif t height : abov e 10. 0 m m (0.3 9 in )
Start s opening : 169-176° F (76-80°C )
Fully open : 194° F (90°C )
THERMOMETE R
THERMOSTAT
Testing
Removin g th e EC T switc h whil e th e engin e
is ho t ca n caus e th e coolan t t o spra y out , seriousl y scald -
ing you . Alway s le t th e engin e an d radiato r coo l dow n
befor e removin g th e EC T switch .
NOTE : Blee d ai r fro m th e coolin g syste m afte r installin g
th e EC T switc h (se e pag e 10-5 ).
1 . Remov e th e EC T switc h fro m th e radiato r (se e pag e
10-2).
2 . Suspen d th e EC T switc h i n a containe r o f wate r a s
shown .
ECT SWITC HTHERMOMETE R
WATER
3. Hea t th e wate r an d chec k th e temperatur e wit h a
thermometer .
CAUTION : D o no t le t th e thermomete r touc h th e
botto m of th e ho t container .
4 . Measur e th e resistanc e betwee n th e A an d B termi -
nal s accordin g t o th e table .
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Component Location s
Index (cont'd )
THREE WA Y CATALYTI C CONVERTE R (TWC )
SECONDAR Y HEATE D OXYGE N SENSO R (SECONDAR Y HO2S ) (SENSO R 2)
SERVIC E CHEC K CONNECTO R (2P )
Troubleshooting , procedures , pag e 11-3 2
DAT A LIN K CONNECTO R (16P )Troubleshootin gprocedures, page , 11-3 2
POWERTRAI N CONTRO L MODUL E(PCM)Troubleshooting , pag e 11-5 3
PGM- RMAIN RELA Y
Rela y Testing , pag e 11-12 9
Troubleshooting , pag e 11-13 0
For Troubleshooting of DTC related components, see chart on page 11-45.
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Component Location s
Index (cont'd )
'96 model :
EVAPORATIV E EMISSIO N
(EVAP ) TW O WA Y VALV E
FUE L INJECTOR S
Repalcement , pag e 11-12 1 FUE
L PUM P
Testing , pag e 11-12 8
FUEL FIL L CA P
FUE L RAI L FUE
L TUBE/QUICK-CONNEC T
FITTINGS
EVAPORATIV E EMISSIO N
(EVAP ) CONTRO L CANISTE R
EVAPORATIV E EMISSIO N
(EVAP ) PURG E CONTRO L
DIAPHRAG M VALV E
FUE L FEE D PIP E
FUE L VAPO R PIP E
FUE L RETUR N PIP E
'97 - 9 8 models :FUEL GAUG E SENDIN G UNI T
FUE L TAN K
FUE L
PRESSUR E REGULATO R
Testing, pag e 11-12 4Replacement , pag e 11-12 7
FUE L
PULSATIO N
DAMPE R
FUE L RAI L FUE
L FILTE R
Replacement , pag e 11-12 7
FUE L INJECTOR S
Replacement , pag e 11-12 1
EVAPORATIV E EMISSIO N
(EVAP ) CONTRO L CANISTE R
VEN T SHU T VALV E
Replacement , pag e 11-16 9
FUEL PUM PTesting , pag e 11-12 8
FUEL FIL L CA P
FUE L TUBE/QUICK-CONNEC T
FITTINGS
EVAPORATIV E EMISSIO N(EVAP) BYPAS S SOLENOI D
VALV E
EVAPORATIV E EMISSIO N(EVAP) TW O WA Y VALV E
FUE L FEE D PIP E
FUE L VAPO R PIP E
EVAPORATIV E EMISSIO N
(EVAP ) CONTRO L CANISTE R
FUEL RETUR N PIP E
FUE
L FILTE R
Replacement , pag e 11-12 7FUE
L TAN K
FUE L
PRESSUR E REGULATO R
Testing, pag e 11-12 4Replacement , pag e 11-12 7 FUE
L GAUG E SENDIN G UNI T
For Troubleshooting of DTC related components,
see chart on page 11-45.
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Troubleshooting
Troubleshooting Procedure s
I. Ho w T o Begi n Troubleshootin g
Whe n th e Malfunctio n Indicato r Lam p (MIL ) ha s bee n reporte d on , o r ther e i s a driveabilit y problem , us e th e appropri -
at e procedur e belo w to diagnos e an d repai r th e problem .
A . Whe n th e MI L ha s com e on :
1 . Connec t th e Hond a PG M Teste r o r a n OB D II sca n too l t o th e 16 P Dat a Lin k Connecto r (DLC ) locate d o n th e cente r
consol e behin d th e ashtray .
2 . Tur n th e ignitio n switc h O N (II) .
3 . Chec k th e DT C an d not e it . Als o chec k an d not e th e
freez e fram e data .
Refe r t o th e Diagnosti c Troubl e Cod e Char t an d
begi n troubleshooting .
MALFUNCTIONINDICATORLAMP(MIL)
NOTE :
See th e OB D II sca n too l o r Hond a PG M Teste r user' s manual s fo r specifi c operatin g instructions .
Th e sca n too l o r teste r ca n rea d th e Diagnosti c Troubl e Code s (DTC) , freez e fram e data , curren t data , an d othe r
Powertrai n Contro l Modul e (PCM ) data .
Freez e fram e dat a indicate s th e engin e condition s whe n th e firs t malfunction , misfir e o r fue l tri m malfunctio n wa s
detected . I t ca n b e usefu l informatio n whe n troubleshooting .
B . Whe n th e MI L ha s no t com e on , bu t ther e is a driveabilit y problem , refe r t o th e Sympto m Char t o n pag e 11-34 .
C . DTC s wil l b e indicate d b y th e blinkin g o f th e Malfunctio n Indicato r Lam p (MIL ) wit h th e SC S servic e connecto r
connected .
• Connec t th e SC S servic e connecto r t o Servic e Chec k Connecto r a s shown . (Th e 2 P Servic e Chec k Connecto r
i s locate d unde r th e das h o n th e passenger' s sid e o f th e car. ) Tur n th e ignitio n switc h O N (II) .
DAT A LIN K CONNECTO R (16P )SERVIC E CHEC KCONNECTO R (2P )
OBD II SCA N TOO L o rHOND A PG M TESTE R
SCS SERVIC E CONNECTO R07PAZ-001010 0
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II. Powertrain Control Module (PCM) Reset Procedure

Either of the following actions will reset the PCM

Use the OBD II scan tool or Honda PGM Tester to clear the PCM's memory.

NOTE: See the OBD II scan tool or Honda PGM Tester user's manuals for specific operating instructions.

Turn the ignition switch OFF. Remove the BACK UP RADIO (10 A) fuse from the under-hood fuse/relay box for

10 seconds.

BACK UP RADIO

(10 A) FUSE

UNDER-HOOD

FUSE/RELAY

BOX

III. Final Procedure (this procedure must be done after any troubleshooting)

1. Remove the SCS Service Connector if it is connected.

NOTE: If the SCS service connector is connected and there are no DTCs stored in the PCM, the MIL will stay

on when the ignition switch is turned ON (II).

2. Do the PCM Reset Procedure.

3. Turn the ignition switch OFF.

4. Disconnect the OBD II scan tool or Honda PGM Tester from the Data Link Connector (16P).ProCarManuals.com

CAUTION:

Puncturing the insulation on a wire can cause poor or intermittent electrical connections.

Bring the tester probe into contact with the terminal from the terminal side of wire harness connectors in the engine

compartment. For female connectors, just touch lightly with the tester probe and do not insert the probe.

RUBBER SEAL
TESTER PROBE

WIRE HARNESS

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