engine ACURA TL 1995 Service Repair Manual

Description

Position

As the engine turns, the ATF pump also starts to operate. Automatic transmission fluid (ATF) is drawn from (99) and dis-

charged into (1). Then, ATF flowing from the ATF pump becomes the line pressure (1). The line pressure (1) is regulated

by the regulator valve. The torque converter inlet pressure (92) enters (94) of the torque converter through the lock-up

shift valve and discharges into (90).

The torque converter check valve prevents the torque converter pressure from rising.

Under this condition, the hydraulic pressure is not applied to the clutches as the manual valve stops line pressure (1).

NOTE: When used, "left" or "right" indicates direction on the hydraulic circuit.
Hydraulic Flow (cont'd)ProCarManuals.com

Position

1. 1st Gear

The flow of fluid through the torque converter circuit is the same as in position.

The line pressure (1) flows to the manual valve, the modulator valve and the throttle valve. The line pressure (1)

becomes modulator pressure (6) at the modulator valve, and remains line pressure (4) at the manual valve.

The modulator pressure (6) flows to the left end of the 1-2 shift valve and right end of the 3-4 shift valve because shift

control solenoid valve A is turned OFF and B is turned ON by the TCM. The 1-2 shift valve is moved to the right side,

and the 3-4 shift valve is moved to the left side.

The line pressure (4) becomes the 1st clutch pressure (10). The 1st clutch pressure (10) is applied to the 1st clutch and

1st accumulator; consequently, the vehicle will move as the engine power is transmitted.

In or position at 1st gear, the 1st-hold clutch pressure is not applied to the 1st-hold clutch because the manual

valve covers the port to leading to the 1st-hold clutch.

NOTE: When used, "left" or "right" indicates direction on the hydraulic circuit.ProCarManuals.com

Component Locations

BRAKE SWITCH

TRANSMISSION CONTROL

MODULE (TCM)

ENGINE CONTROL

MODULE (ECM)

THROTTLE POSITION (TP)

SENSOR

ENGINE COOLANT

TEMPERATURE (ECT)

SENSOR
LOCK-UP CONTROL SOLENOID

VALVE ASSEMBLY

MAINSHAFT SPEED SENSOR

COUNTERSHAFT SPEED

SENSOR

VEHICLE SPEED

SENSOR (VSS)
AUTOMATIC TRANSAXLE (A/T)

GEAR POSITION SWITCH

SHIFT CONTROL SOLENOID

VALVE ASSEMBLY*

LINEAR SOLENOID*

*: Located in transmission.ProCarManuals.com

8.
Set the control shaft to the position, then install

the A/T gear position switch on the control shaft

and install the clamp on the rear cover.

SHIFT CABLE

CONTROL

LEVER

9. Connect the A/T gear position switch connector,

then install the harness stay.

10. Turn the ignition switch ON (II). Move the shift lever

through all gears, and check the A/T gear position

switch synchronization with the A/T gear position

indicator.

11. If the A/T gear position switch does not synchronize

with the A/T gear position indicator, loosen the

bolts securing the A/T gear position switch and

adjust the A/T gear position switch installation.

GAUGE ASSEMBLY

A/T GEAR

POSITION INDICATOR
12. Install the A/T gear position switch cover. Tighten

the bolt on the ATF pan side loosely so that there is

no clearance between the A/T gear position switch

cover and the ATF pan. Then tighten the bolt on the

rear cover side to the specified torque, and tighten

the bolt on the ATF pan side to the specified torque.

6 x 1.0 mm

(Rear cover side)

12 N-m (1.2 kgf-m,

8.7 Ibf-ft)

A/T GEAR POSITION

SWITCH COVER
ATF PAN

6 x 1.0 mm (ATF pan side)

12 N-m (1.2 kgf-m, 8.7 Ibf-ft)

13. Start the engine. Move the shift lever through all

gears, and verify the following:

• The shift lever cannot be moved to the posi-

tion from the position without pushing the

shift lever.

• The engine will not start in any gear, only in the

or position.

• The back-up lights come on when the shift lever

is in the position.ProCarManuals.com

Road Tes t
NOTE : War m u p th e engin e to norma l operatin g temperatur e (th e radiato r fa n come s on) .
1. Appl y parkin g brak e an d bloc k th e wheels . Star t th e engine , the n shif t t o positio n whil e depressin g th e brak e
pedal . Depres s th e accelerato r peda l an d releas e it suddenly . Th e engine should no t stall .
2. Repea t sam e tes t i n position .
3. Shif t t o position , an d chec k tha t th e shif t point s o n a fla t roa d occu r a t th e approximat e speed s show n o n th e nex t
page . Als o chec k fo r abnorma l nois e an d clutc h slippage .
NOTE : Throttl e positio n senso r voltag e represent s th e throttl e opening .
-1 . Remov e th e TC M cove r t o expos e th e TC M fo r roa d testing ; refe r t o pag e 14-5 4 an d 14-55 .
-2 . Se t th e digita l multimete r t o chec k voltag e betwee n B 4 (+ ) termina l an d A1 3 (- ) o r A2 6 (- ) termina l o f th e TC M fo r
th e throttl e positio n sensor .
NOTE : Refe r t o pag e 14-55 ; Ho w to us e th e Backprob e Set .
SR S component s ar e locate d in thi s area . Revie w th e SR S componen t locations , precautions , an d procedure s i n th e SR S
( sectio n 24 ) befor e performin g repair s o r service .
BACKPROB EADAPTER
B4 Termina l
BACKPROB E SE T07SAZ-001000 A
(tw o required )
A13 o r A2 6Termina l
STACKING PATC H
CORD
TCM
DIGITA L MULTIMETE R
(Commerciall y available )
KS - AH M - 3 2 - 003 ,or equivalen t
TC M CONNECTOR S
WIR E SID E O F FEMAL E TERMINAL S
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Position

Upshift

Downshift

4. Accelerate to about 35 mph (57 km/h) so the transmission is in 4th, then shift from position to position. The

vehicle should immediately begin slowing down from engine braking.

CAUTION: Do not shift from

age the transmission.
or position to or position at speeds over 63 mph (100 km/h); you may dam-

5. Check for abnormal noise and clutch slippage in the following positions.

(1st Gear) Position

a. Accelerate from a stop at full throttle. Check that there is no abnormal noise or clutch slippage,

b. Upshifts should not occur with the selector in this position.

(2nd Gear) Position

a. Accelerate from a stop at full throttle. Check that there is no abnormal noise or clutch slippage,

b. Upshifts and downshifts should not occur with the selector in this position.

(Reverse) Position

Accelerate from a stop at full throttle, and check for abnormal noise and clutch slippage.

6. Test in (Parking) Position

Park the vehicle on slope (approx. 16°), apply the parking brake, and shift into position. Release the brake; the vehi-

cle should not move.ProCarManuals.com

Stall Spee d
Test
CAUTION :
T o preven t transmissio n damage , d o no t tes t stal l spee d fo r mor e tha n 1 0 second s a t a time .
D o no t shif t th e leve r whil e raisin g th e engin e speed .
B e sur e to remov e th e pressur e gaug e befor e testin g stal l speed .
1 . Engag e th e parkin g brak e an d bloc k th e fron t wheels .
2 . Connec t a tachomete r t o th e engine , an d star t th e engine .
3 . Mak e sur e th e A/ C switc h is OFF .
4. Afte r th e engin e ha s warme d u p t o norma l operatin g temperatur e (th e radiato r fa n come s on) , shif t int o position .
5 . Full y depres s th e brak e peda l an d accelerato r fo r 6 to 8 seconds , an d not e engin e speed .
6. Allo w tw o minute s fo r cooling , the n repea t th e tes t i n and positions .
NOTE:
Stall spee d test s shoul d b e use d fo r diagnosti c purpose s only .
Stall spee d shoul d b e th e sam e in an d _ positions .
Stal l Spee d RPM :
Specification : 2,35 0 rp m
Servic e Limit : 2,20 0 - 2,50 0 rp m
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Fluid Leve l
Checking/Changin g
Checking
NOTE : Chec k th e flui d leve l wit h th e engin e a t norma l
operatin g temperatur e (th e radiato r fa n come s on) .
1 . Par k th e vehicl e o n leve l ground . Tur n of f th e engine .
2 . Remov e th e dipstic k (yello w loop ) fro m th e trans -
mission , an d wip e i t wit h a clea n cloth .
DIPSTIC KGUIDE
3.
4 .
DIPSTIC K (YELLO W LOOP )
Insert th e dipstic k int o th e transmission . Mak e sur e
th e notc h i n th e rubbe r ca p fit s i n th e dipstic k guid e
an d pus h th e dipstic k i n al l th e way .
Remov e th e dipstic k an d chec k th e flui d level . I t
shoul d b e betwee n th e uppe r an d lowe r marks .
5.
6 .
UPPE R MAR KLOWE R MAR K
It th e leve l i s belo w th e lowe r mark , pou r th e recom -
mended fluid * int o th e tub e t o brin g i t t o th e uppe r
mark.
Inser t th e dipstic k bac k i n th e transmission . Mak e
sur e th e notc h fit s i n th e dipstic k guid e an d th e dip -
stic k i s dow n al l th e way . Changin
g
1 . Brin g th e transmissio n u p t o norma l operatin g tem -
peratur e (th e radiato r fa n come s on ) b y drivin g th e
vehicle . Par k th e vehicl e o n leve l ground , tur n th e
engin e off , an d remov e drai n plug .
NOTE : I f a coole r flushe r i s t o b e used , se e pag e
14-19 3 an d 14-194 .
2. Reinstal l th e drai n plu g wit h a ne w sealin g washer ,
the n refil l th e transmissio n wit h th e recommende d
fluid * t o th e uppe r mar k o n th e dipstick .
Automati c Transmissio n Flui d Capacity :
2. 7 (2. 9 U S qt. , 2. 4 Im p qt. ) a t chang e
7.2 (7. 6 U S qt. , 6. 3 Im p qt. ) a t overhau l
Recommende d Automati c Transmissio n Fluid :
Genuin e Hond a Premiu m Formul a Automati c
Transmissio n Flui d (ATF) *
DRAIN PLU G18 x 1. 5 m m49 N- m (5. 0 kgf-m , 3 6 Ibf-ft )
SEALIN G WASHE R
Replace .
Always us e Genuin e Hond a Premiu m Formul a
Automati c Transmissio n Flui d (ATF) . Usin g a non -
Hond a AT F ca n affec t shif t quality .
ProCarManuals.com

Pressure Testin g
While testing , b e carefu l o f th e rotatin g fron t wheels .
Mak e sur e lifts , jack s an d safet y stand s ar e place d
properl y (se e sectio n 1 ).
CAUTION :
Befor e testing , b e sur e th e transmissio n flui d is fille d
t o th e prope r level .
War m u p th e engin e befor e testing .
1. Rais e th e fron t o f th e vehicle , an d suppor t i t wit h
safet y stand s (se e sectio n 1 ).
2 . Se t th e parkin g brake , an d bloc k bot h rea r wheel s
securely .
3. Allo w th e fron t wheel s t o rotat e freely .
4 . War m u p th e engin e (th e radiato r fa n come s on) ,
the n sto p an d connec t a tachometer .
5 . Connec t th e specia l too l t o eac h inspectio n hole .
TORQUE : 1 8 N- m (1. 8 kgf-m , 1 3 Ibf-ft )
CAUTION : Connec t th e oi l pressur e gaug e securely ,
b e sur e no t t o allo w dus t an d othe r foreig n particle s
t o ente r th e inspectio n hole .
A/T PRESSUR E GAUG E
SE T W/PANE L
07406-002040 0
A/T LO W PRESSUR E
GAUG E W/PANE L
0740 6 - 007030 0
A/ T PRESSUR E HOSE ,
2210 mm07MAJ-PY4011 A
( 4 Required )
A/ T PRESSUR E HOS E
ADAPTE R07MAJ - PY4012 0
( 4 Required )
NOTE: Us e th e A/ T Pressur e Gaug e Se t (0740 6 -
0020003 ) o r A/ T Lo w Pressur e Gaug e (0740 6 -
0070000) , an d th e A/ T pressur e gaug e hose s an d
adapter s show n above . 6
. Disconnec t th e 2 P connecto r fro m th e linea r solenoi d
connector .
7 . Star t th e engine , an d ru n i t a s follows :
A t 2,00 0 rp m fo r lin e pressur e an d clutc h pressur e
measurement .
A t 2,00 0 rp m fo r throttl e B pressur e measurement .
8 . Shif t t o th e respectiv e shif t leve r positio n a s i n th e
table , an d measur e eac h pressur e a t th e fully-opene d
throttle conditio n accordin g to th e table .
NOTE : Whil e testin g fo r lin e pressur e measurement ,
highe r pressur e ma y b e indicate d i f measurement s
are mad e i n shif t leve r position s othe r tha n o r
position .
9. Connec t batter y voltag e t o th e linea r solenoi d con -
necto r terminals .
LINEAR SOLENOI D HARNES S CONNECTO R
WIR E SID E O F
FEMAL E TERMINAL S
LINEA R SOLENOI D
HARNES S
CONNECTO R LOCK-U
P CONTRO L
SOLENOI D VALV E
ASSEMBL Y
10. Shif t t o th e respectiv e shif t leve r positio n a s i n th e
table , an d measur e eac h pressur e a t th e fully-close d
throttle condition .
11. Disconnec t th e specia l tool , an d connec t th e linea r
solenoi d connector .
12 . Instal l th e sealin g bol t wit h a ne w sealin g washe r i n
th e inspectio n hole , an d tighte n t o th e specifie d
torque.
TORQUE : 1 8 N- m (1. 8 kgf-m , 1 3 Ibf-ft )
NOTE : D o no t reus e ol d sealin g washers ; alway s
replac e washers .
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12. Instal l th e AT F pa n wit h tw o dowe l pin s an d a ne w
AT F pa n gaske t (fiftee n bolts ) a s shown .
Mak e sur e tha t th e shif t contro l solenoi d valv e har -
nes s i s no t pinche d b y th e AT F pan .
TORQUE : 1 2 N- m (1. 2 kgf-m , 8. 7 Ibf-ft )
6 x 3 0 m m
6 x 30 m m
13.
AT F PA N
Instal l th e A/ T gea r positio n switc h cover . Tighte n th e
bol t o n th e AT F pa n sid e loosel y s o tha t ther e i s n o
clearanc e betwee n th e A/ T gea r positio n switc h cove r
an d th e AT F pan . The n tighte n th e bol t o n th e rea r
cove r sid e to th e specifie d torque , an d tighte n th e bol t
o n th e AT F pa n sid e to th e specifie d torque .
6 x 1. 0 m m(Rea r cove r side )
1 2 N- m (1. 2 kgf-m ,
8. 7 Ibf-ft )
ATF PA N
A/T GEA R POSITIO N
SWITC H COVE R6 x 1. 0 m m(AT F pa n side )
1 2 N- m (1.2 kgf-m ,
8. 7 Ibf-ft )
14. Connec t th e shif t contro l solenoi d valv e connector .
15 . Instal l th e transmissio n moun t bracke t an d trans -
mission mount .
12 x 1.2 5 mm54 N- m (5. 5 kgf-m ,
4 0 Ibf-ft )
INSULATORS
TRANSMISSIO NMOUNT BRACKE T
12 x 1.2 5 mm54 N- m(5.5 Kgf-m ,
4 0 Ibf-ft )
MOUN TSTOPPE R
WASHER
TRANSMISSIO NMOUNT12 x 1.2 5 mm64 N- m (6. 5 kgf-m ,
4 7 Ibf-ft )
Replace .
16. Refil l th e transmissio n wit h AT F (se e pag e 14-105 ).
17 . Star t th e engine , an d shif t th e transmissio n throug h
al l gear s thre e times . Chec k th e shif t leve r operatio n
an d th e A/ T gea r positio n indicato r operation .
18 . Le t th e engin e reac h operatin g temperatur e (th e radi -
ator fa n come s on ) wit h th e transmissio n in th e o r
E position , the n tur n i t of f an d chec k AT F level .
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