1995 ACURA TL engine

19. 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.

GAUGE ASSEMBLY

20. If the A/T gear position switch is not synchronized

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.

21. 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.
A/T GEAR POSITION

INDICATORProCarManuals.com

Symptom-to-Component Chart

Hydraulic System

SYMPTOM

Engine runs, but vehicle does not move in any gear.

Vehicle moves in , but not in , , or position.

Vehicle moves in , , but not in position.

Vehicle moves in , , but not in position.

Vehicle moves in but not in position.

Vehicle moves in position.

Excessive idle vibration

Poor

acceleration; flares on starting off in position

Stall rpm high in position

Stall rpm high in , , position

Stall rpm high in position

Stall rpm high in position

Stall rpm low

No shift

Fails to shift in position; from 1st to 3rd gear

Fails to shift in position; from 1st to 4th gear

Erratic upshifting

1-2 upshift, 2-3 upshift, 3-4 upshift

1-2 upshift

2-3 upshift

3-4 upshift

Harsh upshift (1-2)

Harsh upshift (2-3)

Harsh upshift (3-4)

Harsh downshift (2-1)

Harsh downshift (3-2)

Harsh downshift (4-3)

Flares on 3-4 upshift

Excessive shock on 2-3 upshift

Excessive shock on 3-4 upshift

Late
shift from position to or positions

Late shift from position to position

Noise from transmission in all shift lever positions

Vehicle does not accelerate more than 31 mph (50 km/h).

Shift
^ver
does
not
operate smoothly.

Fails to shift; stuck in 4th gear

Transmission will not shift into parking gear in position.

Stall
rpm high; all clutch pressures are in specification.

Lock-up clutch does not disengage.

Lock-up clutch does not operate smoothly.

Lock-up clutch does not engage.

No engine braking in position

No engine braking in position

Vibration in all positions

Position indicator light does not come on
Check these items on the

PROBABLE CAUSE List

1,2,3,4,5,6,7,37,42

5, 8, 9, 59, 60, 61
('96)

5, 10,
11,60

5,12,58

5, 9, 59

9,11,13,31,32,34,35,36

2, 33, 37, 48, 49

1, 2, 3, 5, 42, 45

5, 7, 9, 59

5,11,60

58

14, 33, 48, 49

41,51,52

19

19,20

45,64

51

52

51

11, 16, 17, 18, 21, 27, 59, 60, 61C97 - '98),

62C97 - '98), 63, 64

16, 17, 19, 22, 31, 60, 61C97 - '98), 62C97 - '98),

63,64

16, 17, 20, 22, 23, 28, 29, 30, 32, 61C97 - '98),

62C97 - '98), 63, 64

9, 27, 28, 59

19, 22, 29, 39

16, 17, 20, 22, 23, 24, 30, 40, 56, 61('97 - '98),

62C97 - '98), 63, 64

16, 17, 20, 22, 23, 25, 28, 30, 32, 61('97 - '98),

62C97 - '98)

16, 17, 22, 39, 46, 61C97 - '98), 62C97 - '98), 64

16, 17, 22, 23, 28, 29, 40, 46, 61
('97
-
'98),

62C97 - '98), 64

3, 9, 26

3, 18, 58

2, 4, 7, 41

14

5,43

17,51,52

5,
15,43

45

16, 17, 47, 48, 49, 50, 53, 54, 64

16, 17, 45, 47, 48, 49, 50, 53, 54, 64

16, 17, 45, 47, 48, 49, 50, 53, 54, 63, 64

7, 9, 51, 57

7, 11,51,57,59

37

5, 43, 55
Check these items

on the NOTES List

K, L, R, S

C, M, 0

C, L

C, L, Q

C, L, M

C, D

B, K, L

K, L, R

C, D

C, D

N

R

G, L

V

C, D, E, V

C, D, E, H, L, V

C, D, E, I, L, V

0

C, D, E, H

C, D, E, I

E, L, N, V

E, L, N

E, L, N

M

Q

K, L, Q

P

P

D, K, O

E, L, V

L

E, L, V

C, D

C, DProCarManuals.com

PROBABLE CAUSE

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40
Low ATF

ATF pump worn or binding

Regulator valve stuck or spring worn

Mainshaft worn/damaged

Shift cable broken/out of adjustment

Secondary drive gear, secondary driven gear,

extension shaft worn/damaged

Countershaft worn/damaged

1st gears worn/damaged (2 gears)

1st clutch defective

2nd gears worn/damaged (2 gears)

2nd clutch defective

Reverse gears worn/damaged (2 gears)

Excessive ATF

Torque converter one-way clutch defective

Parking mechanism defective

Throttle valve stuck

Linear solenoid defective

1-2 shift valve stuck

2-3 shift valve stuck

3-4 shift valve stuck

2nd accumulator defective

3rd accumulator defective

4th accumulator defective

4-3 shift timing valve stuck

Foreign material in main orifice

Foreign material in 1st orifice

Foreign material in 2nd orifice

3-4 orifice control valve stuck

Foreign material in 3rd orifice

Foreign material in 4th orifice

3rd clutch defective

4th clutch defective

Engine output low

Needle bearing worn/damaged

Thrust washer worn/damaged

Clutch clearance incorrect

Drive plate defective or transmission misas-

sembly

2nd check ball stuck

3rd check ball stuck

4th check ball stuck
41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61C96)

61
('97 -'98)

62C97 - '98)

63

64
Torque converter housing or transmission

housing ball bearing worn/damaged

ATF strainer clogged

Joint in shift cable and transmission or body

worn

Modulator valve stuck

Torque converter check valve stuck

Foreign material in separator plate orifice

Lock-up timing valve stuck

Lock-up shift valve stuck

Lock-up piston defective

Lock-up control valve stuck

Shift control solenoid valve A defective

Shift control solenoid valve B defective

Lock-up control solenoid valve A defective

Lock-up control solenoid valve B defective

A/T gear position switch defective

4-3 kick-down valve stuck

1st-hold clutch defective

Reverse clutch defective

1st gear one-way clutch worn/damaged

2nd gear one-way clutch worn/damaged

CPC valve defective

Line pressure control valve defective

Main orifice control valve defective

Mainshaft speed sensor defective

Countershaft speed sensor defective

(cont'd)ProCarManuals.com

Set idl e rp m in gea r t o specifie d idl e speed . I f stil l n o good , adjus t moto r mount s a s outline d in engine
sectio n o f servic e manual .
I f th e larg e clutc h pisto n 0-rin g i s broken , inspec t th e pisto n groov e fo r roug h machining .
I f th e clutc h pac k is seize d o r i s excessivel y worn , inspec t th e othe r clutche s fo r wea r an d chec k th e orific e
contro l valve s an d throttl e valv e fo r fre e movement .
I f throttl e valv e is stuck , inspec t th e clutche s fo r wear .
I f th e 1- 2 shif t valv e is stuc k closed , th e transmissio n wil l no t upshift . I f stuc k open , th e transmissio n ha s
n o 1s t gear .
I f th e 4- 3 shif t timin g valv e is stuck , inspec t th e 2n d an d 3r d clutc h pack s fo r wear .
I f th e 3- 4 orific e contro l valv e is stuck , inspec t th e 3r d an d 4t h clutc h pack s fo r wear .
If th e CP C valv e is stuc k closed , th e transmissio n wil l no t shif t ou t o f 1s t gear .
Imprope r alignmen t o f AT F pum p bod y an d torqu e converte r housin g ma y caus e AT F pum p seizure . Th e
symptom s ar e mostl y a n rpm-relate d ticking nois e o r a hig h pitche d squeak .
I f th e AT F straine r i s clogge d wit h particle s o f stee l o r aluminum , inspec t th e AT F pump . I f th e pum p is O K
an d n o caus e fo r th e contaminatio n is found , replac e th e torqu e converter .
If th e 1s t clutc h feedpip e guid e in th e rea r cove r i s score d b y th e mainshaft , inspect th e bal l bearin g fo r
excessiv e movemen t i n th e transmissio n housing . I f OK , replac e th e rea r cove r a s it i s dented . Th e O-rin g
unde r th e guid e is probabl y worn .
Replac e the mainshaf t if th e bushing s for the Islan d 2nd feedpip e are loos e or damaged . If th e 1s t feedpip e
i s damage d o r ou t o f round , replac e it . I f th e 2n d feedpip e is damage d o r ou t o f round , replac e th e rea r cover .
A wor n o r damage d one-wa y (sprag ) clutc h is mostl y a resul t o f shiftin g th e transmissio n in S o r S posi -
tion whil e the wheel s rotat e in reverse , suc h as rockin g the vehicl e in snow.__________________ _
Inspect th e fram e fo r collisio n damage .
Inspec t th e revers e clutc h fo r damag e o r wear .
Inspec t botto m o f 3r d clutc h fo r swir l marks .
Replac e revers e clutc h i f wor n o r damaged . I f transmissio n make s clicking , grindin g o r whirrin g noise , als o
replac e mainshaf t revers e gear , revers e idle r gear , an d countershaf t revers e gear .
I f botto m of 3r d clutc h ha s swir l marks , an d transmissio n make s gea r noise , replac e th e countershaft .
B e ver y carefu l no t t o damag e th e torqu e converte r housin g whe n replacin g th e mai n bal l bearing . Yo u
ma y als o damag e th e AT F pum p whe n yo u torqu e dow n th e AT F pum p body . Thi s wil l resul t i s AT F pum p
seizur e if no t detected . Us e th e prope r tools .
Instal l th e mai n sea l flus h wit h th e torqu e converte r housing . I f yo u pus h it int o th e torqu e converte r
housin g unti l i t bottom s out , i t wil l bloc k th e flui d retur n passag e an d resul t i n damage .
Hars h downshift s whe n coastin g to a sto p wit h zer o throttl e ma y b e cause d b y th e linea r solenoi d no t working .
Adjustin g th e throttl e valv e body , throttl e valve , an d linea r solenoi d is essentia l fo r prope r operatio n o f th e
transmission . No t onl y doe s it affec t th e shif t qualit y i f misadjusted , bu t als o th e lock-u p clutc h operation .
A
B
C
D
E
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
V
Flush th e AT F coole r an d coole r lin e (se e flushin g procedur e in th e '95 - '98 Acur a 2.5TL Servic e Manual ,
61SW504) .
NOTES
ProCarManuals.com

Road Tes t
NOTE : War m u p th e engin e t o 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 engin e shoul d no t stall .
2. Repea t sam e tes t i n position .
3. Tes t driv e th e vehicl e o n th e fla t roa d in position . Chec k tha t th e shif t point s 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 PC M cove r t o expos e th e PC M fo r roa d testing ; refe r t o pag e 14-6 6 an d 14-67 .
-2 . Se t th e digita l multimete r t o chec k voltag e betwee n D 6 (+ ) termina l an d A2 6 (- ) termina l o f th e PC M fo r th e throttl e
positio n sensor .
NOTE : Refe r t o pag e 14-66 ; Ho w to us e th e Backprob e Set .
SR S component s ar e locate d i n 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 .
DIGITAL MULTIMETE R
(Commerciall y available )
KS - AH M - 32 - 003 ,or equivalen t
STACKIN G PATC H
CORDS
BACKPROB EADAPTER
BACKPROB E SE T07SAZ-001000 A
(tw o required )
v
A26 Termina l D
6 Termina lPCM
PC M CONNECTOR S
ProCarManuals.com

Road Test

(cont'd)

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

cle should immediately begin slowing down from engine braking.

CAUTION: Do not shift from or position to or position at speeds over 63 mph (100 km/h); you may dam-

age the transmission.

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 shift lever 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 shift lever 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 Speed

Test

CAUTION:

To prevent transmission damage, do not test stall speed for more than 10 seconds at a time.

Do not shift the lever while raising the engine speed.

Be sure to remove the pressure gauge before testing stall speed.

1. Engage the parking brake, and block the front wheels.

2. Connect a tachometer to the engine, and start the engine.

3. Make sure the A/C switch is OFF.

4. After the engine has warmed up to normal operating temperature (the radiator fan comes on), shift into [2] position.

5. Fully depress the brake pedal and accelerator for 6 to 8 seconds, and note engine speed.

6. Allow two minutes for cooling, then repeat the test in , , and positions.

NOTE:

• Stall speed tests should be used for diagnostic purposes only.

• Stall speed should be the same in , and positions.

Stall Speed RPM:

Specification: 2,000 rpm

Service Limit: 1,850 - 2,150 rpmProCarManuals.com

Fluid Level

Checking/Changing

Checking

NOTE: Check the fluid level with the engine at normal

operating temperature (the radiator fan comes on).

1. Park the vehicle on level ground. Turn off the

engine.

2. Remove the dipstick (yellow loop) from the trans-

mission, and wipe it with a clean cloth.

DIPSTICK (YELLOW LOOP)

DIPSTICK

GUIDE

3. Insert the dipstick into the transmission. Make sure

the notch in the rubber cap fits in the dipstick guide,

and push the dipstick in all the way.

4. Remove the dipstick and check the fluid level. It

should be between the upper and lower marks.

UPPER MARK

LOWER MARK

5. If the level is below the lower mark, pour the recom-

mended fluid* into the dipstick tube to bring it to

the upper mark.

6. Insert the dipstick back in the transmission. Make

sure the notch fits in the dipstick guide, and the dip-

stick is down all the way.
Changing

Bring the transmission up to normal operating tem-

perature (the radiator fan comes on) by driving the

vehicle. Park the vehicle on level ground, turn the

engine off, and remove drain plug.

NOTE: If a cooler flusher is to be used, see flushing

procedure in the '95 - '98 Acura 2.5TL Service

Manual, 61SW504.

SEALING WASHER

Replace.

DRAIN PLUG

18x1.5 mm

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

ATF PAN

2. Reinstall the drain plug with a new washer, then

refill the transmission with the recommended fluid*

to the upper mark on the dipstick.

Automatic Transmission Fluid Capacity:

'96 Model:

3.3 ( (3.5 US qt, 2.9 Imp. qt.) at change

8.7 £ (9.2 US qt., 7.7 Imp. qt.) after overhaul

'97 - '98 Models:

3.0 i (3.2 US qt., 2.6 Imp. qt.) at change

8.6 £ (9.1 US qt., 7.6 Imp. qt.) after overhaul

Recommended Automatic Transmission Fluid:

Genuine Honda Premium Formula Automatic

Transmission Fluid (ATF)*

* Always use Genuine Honda Premium Fomula

Automatic Transmission Fluid (ATF). Using a non-

Honda ATF can affect shift qualify.ProCarManuals.com