1995 ACURA TL sensor

Component Locations

POWERTRAIN CONTROL

MODULE (PCM)

PGM-FI

MAIN RELAY

COUNTERSHAFT

SPEED SENSOR
MAINSHAFT SPEED SENSOR

LOCK-UP CONTROL

SOLENOID VALVE

A/B ASSEMBLY
SHIFT CONTROL SOLENOID

VALVE A/B

(Located in transmission.)

VEHICLE SPEED

SENSOR(VSS)
LINEAR SOLENOID

(Located in transmission.)
AUTOMATIC TRANSAXLE (A/T)

GEAR POSITION SWITCHProCarManuals.com

Mainshaft/Countershaft Spee d Sensor s
Replacemen t
Make sur e lifts , jack s an d safet y stand s ar e
place d properly , an d hois t bracket s ar e attache d t o th e
correc t positio n o n th e engin e (se e sectio n 1 ).
1 . Pul l th e carpe t bac k t o expos e th e secondar y heate d
oxyge n senso r (HO2 S senso r 2 ) connector . Discon -
nec t th e connector , the n pus h i t ou t t o th e outside .
NOTE : Th e H02 S (senso r 2 ) connecto r i s locate d
unde r th e passenger' s seat .
HO2S (SENSO R 2 )CONNECTO R
PASSENGER' S
SEA T
CARPE T
2. Remov e th e HO2 S (senso r 2 ) harnes s cover , the n
remov e th e thre e wa y catalyti c converter .
3 . Remov e th e exhaus t pip e A cover , the n remov e th e
exhaus t pip e A .
8 x 1.2 5 mm22N- m(2.2kgf-m , leibf-ft )
10 x 1.25m m33 N- m (3. 4 kgf-m ,
2 5 Ibf-ft )
10 x 1.2 5 mm33 N- m (3. 4 kgf-m ,
2 5 Ibf-ft )
THRE E WA Y
CATALYTI C
CONVERTE R
EXHAUS T
PIP E A
COVE R GASKE
T
Replace .
COVE R
HOLDE R
10 x 1.2 5 mm33 N- m (3. 4 kgf-m ,
2 5 Ibf-ft )
EXHAUS T I 8x1.2 5 m mPIP E A I 22 N- m (2. 2 kgf-m ,
COVE R \ 16 Ibf-ft )
6x1.Om m
9.8 N- m (1. 0 kgf-m ,7.2 Ibf-ft )
HO2S(SENSOR 2)
HARNESS
COVER
6 x 1. 0 m m9.8 N-m(1.0 kgf-m,
7.2 Ibf-ft)
4 . Remov e th e hea t shields .
6x 1.0m m9.8 N- m (1. 0 kgf-m ,
7. 2 Ibf-ft )
HEA T
SHIEL D HEA
T
SHIEL D
6x 1. 0 m m9.8 N- m (1. 0 kgf-m ,
7. 2 Ibf-ft )
5. Remov e th e bol t securin g th e shif t cabl e guid e
bracket , the n remov e th e transmissio n beam .
SHIFT CABL EGUIDE BRACKE T
TRANSMISSIO N BEA M
(cont'd )
ProCarManuals.com

Mainshaft/Countershaft Speed Sensors

Replacement (cont'd)

6. Place a jack under the transmission, and raise the

transmission just enough to take the weight off of the

mounts, then remove the stop holder, the mid mount

stops and the mid mounts.

TRANSMISSION

MID MOUNT NUT

10 x 1.25mm

48 N-m (4.9 kgf-m,

35 Ibfft
STOP HOLDER

(U.S. model only)

MID MOUNT

STOP

(U.S. model onlyf

10 x
1.25
mm

54 N-m

(5.5 kgf-m,

40 Ibf-ft)

7. Lower the transmission with a jack.
8x
1.25
mm

22 N-m

(2.2 kgf-m, 16 Ibf-ft)
MID

MOUNT

MID MOUNT

BRACKET BOLTS

10 x
1.25
mm

38 N-m (3.9 kgf-m,

28 Ibf-ft)

8. Remove the 6 mm bolt from the transmission hous-

ing, and remove the mainshaft and countershaft

speed sensors.

9. Replace the O-rings with new ones before reassem-

bling the mainshaft and countershaft speed sensors.

10. Install the washers on the mainshaft and countershaft

speed sensors, then install them on the transmission

housing.

6x
1.0mm

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

SPEED SENSOR

WASHER

O-RING

Replace.
COUNTER-

SHAFT

SPEED

SENSOR

O-RING

Replace.

WASHER
11. Raise the transmission with a jack, then install the

mid mounts. Tighten the mid mount bracket bolts,

then tighten the mid mount nuts.

12. Install the transmission beam on the rear transmis-

sion mount bracket/mount, then tighten the three

bolts loosely.

13. Tighten the three transmission beam bolts, then

tighten the two transmission beam bolts to the

specified torque.

14. Install the shift cable guide bracket on the transmis-

sion beam.

6x
1.0mm

TRANSMISSION BEAM 9-8 N-m (1.0 kgf-m,

BOLTS, 2 7.2 Ibfft)

12x1.25 mm

54 N-m (5.5 kgf-m,

40 Ibf-ft)
SHIFT CABLE

GUIDE BRACKET

TRANSMISSION BEAM BOLTS, 3

10 x
1.25
mm

38 N-m (3.9 kgf-m, 28 Ibf-ft)

15. Install the heat shields.

16. Install the exhaust pipe A and the three way catalytic

converter, then install the exhaust pipe A cover.

17. Push the H02S (sensor 2) connector into the vehi-

cle, then secure with the harness grommet.

18. Install the H02S (sensor 2) harness cover.

19. Connect the HO2S (sensor 2) connector.ProCarManuals.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

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

10. Remove the HO2S (sensor 2) harness cover, then

remove the three way catalytic converter.

THREE WAY CATALYTIC

CONVERTER

GASKET

Replace.

EXHAUST

PIPE A

COVER
EXHAUST

PIPE A COVER
HO2S

(SENSOR 2)

HARNESS

COVER

11. Remove the exhaust pipe A cover, then remove the

exhaust pipe A.

12. Remove the heat shields.

Loosen these

bolts.

HEAT SHIELD
HEAT SHIELD
13. Remove the ATF cooler hoses at the ATF cooler

lines. Turn the ends of the cooler hoses up to pre-

vent ATF from flowing out, then plug the ATF cooler

lines and hoses.

NOTE: Check for any signs of leakage at the hoses

joints.

SHIFT CABLE

HOLDER

SHIFT CABLE

CONTROL LEVER

SHIFT CABLE

COVER
WASHER

ATF DIPSTICK

PIPE

O-RING

Replace.

ATF COOLER HOSES
SHIFT CABLE

HOLDER BASE

SHIFT CONTROL SOLENOID

VALVE/LINEAR SOLENOID

HARNESS CONNECTOR

ATF COOLER LINES

14. Remove the shift cable cover mounting bolts, then

remove the A/T gear position switch harness clamp

and the shift control solenoid valve/linear solenoid

harness connector from the shift cable cover.

15. Remove the shift cable cover from the transmission

housing.

16. Remove the shift cable holder with shift cable from

the shift cable holder base.

17. Remove the control lever from the control shaft.

18. Remove the ATF dipstick pipe from the torque con-

verter housing.

(cont'd)
COVER

HOLDER
EXHAUST

PIPE A
GASKET

Replace.ProCarManuals.com

1. Remov e th e mainshaf t an d countershaf t spee d sen -
sor s fro m th e transmissio n housing .
2 . Remov e th e sixtee n bolt s securin g th e transmissio n
housing wit h th e transmissio n hanger , harnes s
clamp bracke t an d spee d senso r connecto r bracket .
3 . Instal l th e specia l tool s o n th e transmissio n hous -
ing , the n remov e th e transmissio n housin g a s
shown .
CAUTION : Mak e sur e tha t th e mainshaf t an d counter -
shaf t spee d sensor s hav e bee n remove d fro m th e
transmissio n housin g befor e removin g th e transmis -
sio n housin g fro m th e torqu e converte r housing .
HOUSING PULLE R07HAC-PK4010 A
TRANSMISSIONHOUSING
HOUSING PULLE REXTENSIO N BOLT S07MAC-PY4010 0(3 Required )
4. Remov e th e mainshaf t sub-assembl y an d counter -
shaf t sub-assembl y together .
NOTE : Whe n removin g th e shafts , tak e car e t o pre -
ven t damag e t o th e regulato r valv e body .
COUNTERSHAF T
SUB-ASSEMBL YMAINSHAFTSUB-ASSEMBL Y
5. Remov e th e secondar y drive n gea r shaf t assembly .
ProCarManuals.com

Transmission

Reassembly (cont'd)

17. Install the mainshaft sub-assembly and the counter-

shaft sub-assembly together in the torque converter

housing.

NOTE: Take care to prevent damage to the regula-

tor valve body, when installing the shafts.

COUNTERSHAFT

SUB-ASSEMBLY
MAINSHAFT

SUB-ASSEMBLY

18. Install the two dowel pins and a new gasket on the

torque converter housing.

TRANSMISSION HOUSING

BOLTS

TRANSMISSION 8 x 1.25 mm

HOUSING
33 N-m (3.4 kgf-m, 25 Ibf-ft)

DOWEL

PIN

COUNTERSHAFT

SPEED SENSOR

WASHER

COUNTERSHAFT

SPEED SENSOR

6x 1.0 mm

12 N-m

(1.2 kgf-m,

8.7 Ibf-ft)
MAINSHAFT

SPEED SENSOR

WASHER

TRANSMISSION

HOUSING

GASKET

DOWEL PIN
MAINSHAFT

SPEED SENSOR

19. Place the transmission housing on the torque con-

verter housing.

CAUTION: Make sure that the mainshaft and

countershaft speed sensors are not installed on the

transmission housing before installing the transmis-

sion housing on the torque converter housing.
20. Install the transmission housing mounting bolts with

the transmission hanger, harness clamp bracket,

and speed sensor connector bracket, then tighten

them in two or more steps in the sequence shown.

TORQUE: 33 N-m (3.4 kgf-m, 25 Ibf-ft)

TRANSMISSION HANGER
HARNESS CLAMP BRACKET

SPEED SENSOR

CONNECTOR

BRACKET

21. Install the mainshaft and countershaft speed sen-

sors with the washers on the transmission housing.

22. Install the countershaft 2nd gear assembly, 2nd gear

one-way clutch, needle bearings, thrust washer, and

thrust needle bearing on the countershaft.

THRUST NEEDLE

BEARING

THRUST WASHER,

45.5
x 60 mm

NEEDLE BEARINGS

2ND GEAR ONE-WAY

CLUTCH
NEEDLE BEARING

THRUST NEEDLE

BEARING

2ND GEAR

COLLAR

MAINSHAFT

23. Install the 2nd gear collar, thrust needle bearing,

and needle bearing on the mainshaft.
2ND GEAR

ASSEMBLY

COUNTERSHAFTProCarManuals.com