1995 ACURA TL battery

SRS Uni t
Replacemen t
CAUTION:
Durin g installatio n o r replacement , d o no t bum p
(impac t wrench , hamme r etc. ) th e are a nea r th e SR S
unit .
D o no t damag e th e SR S uni t terminal s o r connec -
tors.
Do no t disassembl e th e SR S unit ; i t ha s n o service -
abl e parts .
Stor e th e SR S uni t i n a clean , dr y area .
D o no t us e an y SR S uni t whic h ha s bee n subjecte d
t o wate r damag e o r show s sign s o f bein g droppe d o r
improperl y handled , suc h a s dents , crack s o r defor -
mation .
1 . Mak e sur e yo u hav e th e anti-thef t cod e fo r th e
radio , the n writ e dow n th e frequencie s fo r th e
radio' s prese t buttons .
2 . Disconnec t th e batter y negativ e cable , the n discon -
nec t th e positiv e cabl e fro m th e battery , an d wai t a t
leas t thre e minutes .
3 . Disconnec t th e airba g connectors .
Driver' s Side :
Remov e th e acces s pane l fro m th e steerin g wheel ,
the n disconnec t th e 2 P connecto r betwee n th e driver' s
airba g an d cabl e ree l (se e pag e 24-11 ).
Fron t Passenger' s Side :
Remov e th e glov e box .
Disconnec t th e connecto r betwee n th e fron t passen -
ger' s airba g an d SR S mai n harness . O n a '9 6 model ,
connec t th e shor t connecto r t o th e fron t passenger' s
airba g connector .
FRONT PASSENGER' S
AIRBA G
CONNECTO R
SRS MAI N HARNES SCONNECTO R
4. Remov e th e radi o pane l (se e sectio n 23 ).
5 . Remov e th e cente r consol e an d dashboar d cente r
trim.
DASHBOAR D CENTE R TRI M
CENTE R
CONSOL E
6. Disconnec t th e SR S mai n harnes s 18 P connecto r fro m
th e SR S
unit .
7. Remov e th e fou r Tor x bolt s fro m th e SR S unit , the n
pull th e SR S uni t ou t o f th e dashboard .
TORX BOLT S
Us e a Tor x T3 0 bit .
SRS MAI N HARNES S18P CONNECTO R TOR
X BOLT SUse a Tor x T3 0 bit .
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8. Install the new SRS unit.

TORX BOLTS

9.8 N-m (1.0 kgf-m, 7.2 Ibf-ft)

Use a Torx T30 bit.

Replace.

SRS MAIN HARNESS

18P CONNECTOR

TORX BOLTS

9.8 N-m (1.0 kgf-m, 7.2 Ibf-ft)

Use a Torx T30 bit.

Replace.

9. Connect the SRS main harness 18P connector to the

SRS unit, then push it into position until it clicks.

10. Reinstall the radio panel bracket and radio panel

assembly.

11. Reinstall the dashboard center trim and center con-

sole.
12. Reconnect the driver's airbag 2P connector to the

cable reel 2P connector, and reinstall the access

panel on the steering wheel.

13. Reconnect the front passenger's airbag connector

to the SRS main harness, then reinstall the glove

box.

14. Reconnect the battery positive cable, then the nega-

tive cable.

15. After installing the SRS unit, confirm proper system

operation: Turn the ignition switch ON (II); the SRS

indicator light should come on for about six sec-

onds and then go off.

16. Enter the anti-theft code for the radio, then enter the

customer's radio station presets.ProCarManuals.com

SERVICE INFORMATIO N(1995-1996,1998 )VEHICLE EMISSIO N CONTRO LINFORMATION/VACUU MHOSE ROUTIN G DIAGRA M(1997: KA )VEHICL E EMISSIO N CONTRO LINFORMATIO N (1997 : KC )
COOLAN TINFORMATIO N(1995-1996)VACUUM HOS EROUTIN G DIAGRA M(1997 -1998 : KC)
COOLAN TINFORMATIO N (199 7 -1998 )
AIR CONDITIONIN G
INFORMATIO N
(1995-1997 )
BATTERYCAUTION(1995 -1998 )
AIR CLEANER ,RECOMMENDE DENGINE OI Land FILTER , SPAR KPLUG SERVIC E(1995-1998 )
TIRE INFORMATIO N(1995 - 1996 )TIRE INFORMATIO N(1997 -1998 )
RADIATO R CA PCAUTIO N
(199 5 -1998 )
NOTE: Refe r t o page 1-9a of th e '9 6-9 8 Acura 3.2TL Servic e Manual supplement forfor the differences on this page for the 3.2TL.
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Engine Removal/Installation

Removal

• Make sure jacks and safety stands are placed properly

and hoist brackets are attached to the correct positions

on the engine.

• Make sure the car will not roll off stands and fall

while you are working under it.

CAUTION:

• Use fender covers to avoid damaging painted sur-

face.

• Unplug the wiring connectors carefully while holding

the connector portion to avoid damage.

• Mark all wiring and hoses to avoid misconnection.

Also, be sure that they do not contact other wiring

or hoses or interfere with other parts.

1. Secure the hood open as far as possible.

2. Make sure you have the anti-theft code for the radio,

then write down the frequencies for the radio's pre-

set buttons.

3. Disconnect the battery negative terminal first, then

the positive terminal.

4. Remove the engine ground cables and ignition coil

wire.

IGNITION COIL

WIRE

GROUND

CABLES
6 x 1.0 mm

9.8 N-m (1.0 kgf-m,

7.2 Ibf-ft)
5. Remove the battery, then remove the heat shields.

6 x 1.0 mm

9.8 N-m (1.0 kgf-m, 7.2 Ibf-ft)

HEAT

SHIELDS

6. Remove the battery base.
6 x 1.0 mm

9.8 N-m (1.0 kgf-m,

7.2 Ibf-ft)

8 x
1.25
mm

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

BATTERY

BASEProCarManuals.com

Engine Removal/Installation

Removal (cont'd)

7. Remove the battery cables from the under-hood fuse/

relay box.

BATTERY

CABLES

8.

9.
UNDER-HOOD

FUSE/RELAY BOX

Disconnect the engine wire harness connector on

the right (passenger's) side of the engine compart-

ment.

Remove the battery cable from the under-hood ABS

fuse/relay box.

BATTERY

CABLE

ENGINE WIRE

HARNESS

UNDER-HOOD ABS

FUSE/RELAY BOX
10. Remove the intake air duct and vacuum hose.

INTAKE AIR

DUCT

11.
VACUUM

HOSE

Remove the adjusting bolt, locknut and mounting

bolt, then remove the power steering (P/S) pump

belt and pump.

MOUNTING BOLT

10 x
1.25
mm

49 N-m (5.0 kgf-m, 36 Ibf-ft)

ADJUSTING

BOLT

P/S PUMP

BELT

LOCKNUT

8 x
1.25
mm

22 N-m (2.2 kgf-m,

16 Ibf-ft)ProCarManuals.com

Cylinder Hea d
Remova l
Engine remova l i s no t require d fo r thi s procedure .
Mak e sur e jack s an d safet y stand s ar e
place d properl y an d hois t bracket s ar e attache d to cor -
rec t positio n o n th e engine .
CAUTION :
• Us e fende r cover s t o avoi d damagin g painte d sur -
faces .
• Unplu g th e wirin g connector s carefull y whil e holdin g
th e connecto r portio n to avoi d damage .
• T o avoi d damagin g th e cylinde r head , wai t unti l th e
engin e coolan t temperatur e drop s belo w 100° F
(38°C ) befor e loosenin g th e retainin g bolts .
NOTE :
• Mar k al l wirin g an d hose s t o avoi d misconnection .
Also , b e sur e tha t the y d o no t contac t othe r wirin g o r
hoses , o r interfer e wit h othe r parts .
• Inspec t th e timin g bel t befor e removin g th e cylinde r
head .
• Tur n th e crankshaf t pulle y s o tha t th e No . 1 pisto n i s
a t to p dea d cente r (se e pag e 6-12 ).
1 . Mak e sur e yo u hav e th e anti-thef t cod e fo r th e radio ,
the n writ e dow n th e frequencie s fo r th e radio' s pre -
se t buttons .
2 . Disconnec t th e negativ e termina l fro m th e battery .
3 . Drai n th e engin e coolan t (se e pag e 10-5 ).
Remov e th e radiato r cap to spee d draining .
4 . Remov e th e groun d cabl e an d ignitio n coi l wire .
IGNITIO N COI LWIRE6 x 1. 0 m m9.8 N- m (1. 0 kgf-m ,
7. 2 Ibf-ft )
GROUN DCABLE
5. Remov e th e hea t shield s (se e pag e 5-3 ).
6 . Remov e th e intak e ai r duc t (se e pag e 5-4 ).
7 . Loose n th e adjustin g bolt , locknu t an d mountin g bolt ,
the n remov e th e powe r steerin g (P/S ) pum p bel t (se e
page 5-4 ).
8 . Loose n th e idle r pulle y cente r nu t an d adjustin g bolt ,
the n remov e th e ai r conditionin g (A/C ) compresso r
belt .
ADJUSTIN GBOLT
A/ C COMPRESSO R
BELTIDLE R PULLE YCENTER NU T10 x 1.2 5 mm44 N- m (4. 5 kgf-m , 3 3 Ibf-ft )
9. Loose n th e adjustin g bolt , loc k bol t an d mountin g
bolt , the n remov e th e alternato r belt .
MOUNTIN G BOL T10 x 1.2 5 mm44 N- m (4. 5 kgf-m ,
3 3 Ibf-ft )ADJUSTIN GNUT
LOC K BOL T8 x 1.2 5 mm22 N- m (2. 2 kgf-m , 1 6 Ibf-ft )
ALTERNATO R
BELT
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HO2S
Replacemen t
Primary HO2S :
1 . Mak e sur e yo u hav e th e anti-thef t cod e fo r th e
radio , the n writ e dow n th e frequencie s fo r th e
radio' s prese t buttons .
2 . Disconnec t th e batter y negativ e termina l first , the n
th e positiv e terminal .
3 . Remov e th e battery , the n remov e th e hea t shield s
(se e pag e 5-3 ).
4 . Remov e th e wir e harnes s covers , the n disconnec t
th e primar y H02 S connector .
PRIMARY H02 SCONNECTO R
WIR E HARNES S
COVERS
5. Remov e th e primar y HO2S .
8 x 1.2 5 mm22 N- m (2. 2 kgf-m ,
1 6 Ibf-ft )
PRIMAR Y H02 S44 N- m (4. 5 kgf-m ,
3 3 Ibf-ft )
6. Instal l th e primar y HO2 S i n revers e orde r o f
removal .
7. Ente r th e anti-thef t cod e fo r th e radio , the n ente r th e
customer' s radi o statio n presets .
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PGM-FI System

System Description

INPUTS
ENGINE CONTROL MODULE (ECM)

OUTPUTS

Fuel Injectors

PGM-FI Main Relay (Fuel Pump)

MIL

IAC Valve

A/C Compressor Clutch Relay

Radiator Fan Relay

Condenser Fan Relay

ALT

ICM

EVAP Purge Control Solenoid

Valve

Primary HO2S Heater

Secondary H02S Heater

EGR Control Solenoid Valve

IAB Control Solenoid Valve

EVAP Bypass Solenoid Valve*2

EVAP Control Canister Vent Shut

Valve*2

*1: '95-96 models

*2: '97 - 98 models

PGM-FI System

The PGM-FI system on this model is a sequential multiport fuel injection system.

Fuel injector Timing and Duration

The ECM contains memories for the basic discharge durations at various engine speeds and manifold air flow rates. The

basic discharge duration, after being read out from the memory, is further modified by signals sent from various sensors

to obtain the final discharge duration.

Idle Air Control

Idle Air Control Valve (IAC Valve)

When the engine is cold, the A/C compressor is on, the transmission is in gear, the brake pedal is depressed, the P/S load

is high, or the alternator is charging, the ECM controls current to the IAC Valve to maintain the correct idle speed.

Ignition Timing Control

• The ECM contains memories for basic ignition timing at various engine speeds and manifold air flow rates. Ignition

timing is also adjusted for engine coolant temperature.

• A knock control system is also used. When detonation is detected by a knock sensor (KS), the ignition timing is retarded.

Other Control Functions

1. Starting Control

When the engine is started, the ECM provides a rich mixture by increasing fuel injector duration.

2. Fuel Pump Control

• When the ignition switch is initially turned on, the ECM supplies ground to the PGM-FI main relay that supplies

current to the fuel pump for two seconds to pressurize the fuel system.

• When the engine is running, the ECM supplies ground to the PGM-FI main relay that supplies current to the fuel pump.

• When the engine is not running and the ignition is on, the ECM cuts ground to the PGM-FI main relay which cuts

current to the fuel pump.

3. Fuel Cut-off Control

• During deceleration with the throttle valve closed, current to the fuel injectors is cut off to improve fuel economy at

speeds over 1,250 rpm.

• Fuel cut-off action also takes place when engine speed exceeds 7,100 rpm, regardless of the position of the throttle

valve, to protect the engine from over-revving.
CKP/TDC/CYP Sensor

CKF Sensor

MAF Sensor

ECT Sensor

IAT Sensor

TP Sensor

EGR Valve Lift Sensor

Primary HO2S

Secondary H02S

VSS

BARO Sensor

ELD

Front KS

Rear KS

Starter Signal

ALT FR Signal

Air Conditioning Signal

A/T Gear Position Signal

Battery Voltage (IGN.1)

Brake Switch Signal

PSP Switch Signal

EVAP Purge Flow Switch*1

Fuel Tank Pressure Sensor*2ProCarManuals.com