1995 ACURA TL service indicator

Camshaft

Inspection (cont'd)

3. Zero the dial indicator against the rear end of the

camshaft. Push the camshaft back and forth, and

read the end play.

Camshaft End Play:

Standard (New): 0.05 - 0.15 mm

(0.002 - 0.006 in)

Service Limit: 0.15 mm (0.006 in)

4. Remove the bolts, then remove the camshaft hold-

ers from the cylinder head.

5. Lift the camshaft out of the cylinder head, wipe it

clean,
then
inspect
the
lift
ramps.
Replace
the

camshaft if any lobes are pitted, scored, or excessive-

ly worn.

6. Clean the camshaft bearing surfaces in the cylinder

head, then set the camshaft back in place.

7. Insert a plastigage strip across each journal.

8. Install the camshaft holders, then tighten the bolts

to the specified torque shown on the previous page.

9. Remove the camshaft holders. Measure the widest

portion of plastigage on each journal.

Camshaft-to-Holder Oil Clearance:

Standard (New): 0.050 - 0.089 mm

(0.0020 - 0.0035 in)

Service Limit: 0.10 mm (0.004 in)

PLASTIGAGE STRIP
10.

If camshaft-to-holder oil clearance is out of toler-

ance:

— And the camshaft has already been replaced,

you must replace the cylinder head.

— If the camshaft has not been replaced, first check

the total runout with the camshaft supported on

V-blocks.

Camshaft Total Runout:

Standard (New): 0.03 mm (0.001 in) max.

Service Limit: 0.04 mm (0.002 in)

Rotate camshaft

while measuring.

— If the total runout of the camshaft is within toler-

ance, replace the cylinder head.

— If the total runout is out of tolerance, replace the

camshaft and recheck. If the oil clearance is still

out of tolerance, replace the cylinder head.

11. Check cam lobe height wear.

Cam Lobe Height Standard (New):

INTAKE 40.005 mm (1.5750 in)

EXHAUST 37.766 mm (1.4868 in)

Check this area for wear.
CAMSHAFTProCarManuals.com

Crankshaft

Inspection

Clean the crankshaft oil passages with pipe cleaners

or a suitable brush.

Check the keyway and threads.

Alignment

Measure runout on all main journals to make sure the

crankshaft is not bent.

The difference between measurements on each journal

must not be more than the service limit.

Crankshaft Total Runout:

Standard (New): 0.020 mm (0.0008 in) max.

Service Limit: 0.030 mm (0.0012 in)

DIAL INDICATOR

Rotate two complete

revolutions.

Support with lathe-

type tool or V-blocks.
Out-of-Round and Taper

Measure out-of-round at the middle of each rod and

main journal in two places.

The difference between measurements on each journal

must not be more than the service limit.

Journal Out-of-Round:

Standard (New): 0.004 mm (0.0002 in) max.

Service Limit: 0.010 mm (0.0004 in)

Measure out-of-

round at middle.

Measure taper at edges of each rod and main journal.

The difference between measurements on each journal

must not be more than the service limit.

Journal Taper:

Standard (New): 0.005 mm (0.0002 in) max.

Service Limit: 0.010 mm (0.0004 in)
Measure taper

at edges.ProCarManuals.com

PGM-FI System

System Description (cont'd)

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 1,000 rpm.

Fuel cut-off action also takes place when engine speed exceeds 6,500 rpm, regardless of the position of the throttle

valve, to protect the engine from over-revving.

4. A/C Compressor Clutch Relay .

When the PCM receives a demand for cooling from the air conditioning system, it delays the compressor from being

energized, and enriches the mixture to assure a smooth transition to the A/C mode.

5. Evaporative Emission (EVAP) Purge Control Solenoid Valve

'96 model: When the engine coolant temperature is below 158°F (70°C), the PCM controls the EVAP purge control

solenoid valve which cuts vacuum to the EVAP purge control canister diaphragm.

'97 - 98 models: When the engine coolant temperature is above 99°F (37°C), the PCM controls the EVAP purge control

solenoid valve which controls vacuum to the EVAP purge control canister.

6. Intake Air Bypass (IAB) Low Control Solenoid Valve, Intake Air Bypass (IAB) High Control Solenoid Valve

When engine speed is below 3,350 rpm, the IAB High Control Solenoid Valve and IAB Low Control Solenoid Valve are

activated by a signal from the PCM. Intake air flows through a long chamber path, increasing torque at low RPM.

When engine speed is 3,350 - 3,950 rpm, the IAB Low Control Solenoid Valve is deactivated by the PCM. Intake air

flows through a short chamber path, increasing mid-range torque.

When the engine rpm is above 3,950 rpm, the IAB Low Control Solenoid Valve and IAB High Control Solenoid Valve are

deactivated by the PCM. This creates a very short intake path and increases high-speed torque.

7. Exhaust Gas Recirculation (EGR) Control Solenoid Valve

When the EGR is required for control of oxides of nitrogen (NOx) emissions, the PCM controls the EGR control solenoid

valve which supplies regulated vacuum to the EGR valve.

ECM Fail-safe/Back-up Functions

1. Fail-safe Function

When an abnormality occurs in a signal from a sensor, the PCM ignores that signal and assumes a pre-programmed

value for that sensor that allows the engine to continue to run.

2. Back-up Function

When an abnormality occurs in the PCM itself, the fuel injectors are controlled by a back-up circuit independent of the

system in order to permit minimal driving.

3. Self-diagnosis Function [Malfunction Indicator Lamp (MIL)]

When an abnormality occurs in a signal from a sensor, the PCM supplies ground for the MIL and stores the DTC in

erasable memory. When the ignition is initially turned on, the PCM supplies ground for the MIL for two seconds to

check the MIL bulb condition.

4. Two Driving Cycle Detection Method

To prevent false indications, the two driving cycle detection method is used for the H02S, fuel metering-related, idle

control system, ECT sensor, EGR system, TWC, EVAP control system and other self-diagnostic functions. When an

abnormality occurs, the PCM stores it in its memory. When the same abnormality recurs after the ignition switch is

turned OFF and ON (II) again, the PCM informs the driver by lighting the MIL.

However, to ease troubleshooting, this function is cancelled when you short the service check connector. The MIL will

then blink immediately when an abnormality occurs.ProCarManuals.com

Clutch
Reassembl y (cont'd )
14. Measur e th e clearanc e betwee n th e clutc h en d plat e
and to p dis c wit h a dia l indicator .
Zero th e dia l indicato r wit h th e clutc h en d plat e low -
ered , an d lif t i t u p to th e sna p ring . Th e distanc e tha t
the clutc h en d plat e move s is th e clearanc e betwee n
the clutc h en d plat e an d to p disc .
NOTE : Measur e a t thre e locations .
Clutch En d Plate-to-To p Disc Clearance :
Clutch
1st
2n d
3rd
4th
1st-hol d
Revers e
Service Limi t
0.65
0.6 0
0.6 0
0.50
0.7 0
0.7 5
-0.8 5
-0.80
-0.8 0
-0.70
-0.9 0
-0.9 5
mm
m m
m m
mm
m m
m m
(0
( 0
( 0
(0
02 6
02 4
02 4
020
(0.02 8
(003 0
- 0.03 3
-0.031
-0.03 1
- 0.02 8
- 0.03 5
- 0.03 7
in)
in)
in)
in)
in )
in )
DIA L INDICATO R
TOP DIS C
15. I f th e clearanc e is no t withi n th e servic e limits , selec t
a ne w clutc h en d plat e fro m th e followin g table .
NOTE : I f th e thickes t clutc h en d plat e i s installed ,
but th e clearanc e i s stil l ove r th e standard , replac e
the clutc h disc s an d clutc h plates .
PLATE NUMBE RThicknes s
CLUTCH EN D PLAT E
1ST, 2ND , 3R D an d 4T H CLUTC H EN D PLATE S
Plat e No .
1
2
3
4
5
6
7
8
9
Part Numbe r
2255 1-PY4 - 003
2255 2 - PY 4 - 00 3
2255 3 - PY 4 - 00 3
2255 4 - PY 4 - 00 3
2255 5 - PY 4 - 00 3
2255 6 - PY 4 - 00 3
2255 7 - PY 4 - 00 3
2255 8 - PY 4 - 00 3
2255 9 - PY 4 - 00 3 Thicknes
s
2. 1 m m (0.08 3 in )
2. 2 m m (0.08 7 in )
2. 3 m m (0.09 1 in )
2.4m m (0.09 4 in )
2. 5 m m (0.09 8 in )
2. 6 m m (0.10 2 in )
2. 7 m m (0.10 6 in )
2.8m m (0.1 10 in )
2.9 m m (0. 1 14 in )
1ST-HOL D CLUTCH EN D PLATE S
Plat e No .
L1
L 2
L3
L 4
L5
L 6
L7
L 8
L 9
Par t Numbe r
2235 1 - PY 4 - 00 3
2235 2 - PY 4 - 00 3
2235 3 - PY 4 - 00 3
2235 4 - PY 4 - 00 3
2235 5 - PY 4 - 00 3
2235 6 - PY 4 - 00 3
2235 7 - PY 4 - 00 3
2235 8 - PY 4 - 00 3
2235 9 - PY 4 - 00 3 Thicknes
s
2.1 m m (0.08 3 in )
2.2 m m (0.08 7 in )
2. 3 m m (0.09 1 in )
2. 4 m m (0.09 4 in )
2.5 m m (0.09 8 in )
2.6 m m (0.10 2 in )
2. 7 m m (0.10 6 in )
2. 8 m m (0.11 0 in )
2. 9 m m (0.11 4 in )
REVERS E CLUTC H EN D PLATE S
Plat e No .
R1
R 2
R3
R 4
R5
R6
R7
R 8
R9
Par t Numbe r
2245 1 - PY 4 - 00 3
2245 2 - PY 4 - 00 3
2245 3 - PY 4 - 00 3
2245 4 - PY 4 - 00 3
2245 5 - PY 4 - 00 3
2245 6 - PY 4 - 00 3
2245 7 - PY 4 - 00 3
2245 8 - PY 4 - 00 3
2245 9 - PY 4 - 00 3 Thicknes
s
4. 1 m m (0.16 1 in )
4. 2 m m (0.16 5 in )
4. 3 m m (0.16 9 in )
4. 4 m m (0.17 3 in )
4. 5 m m (0.17 7 in )
4. 6 m m (0.18 1 in )
4. 7 m m (0.18 5 in )
4. 8 m m (0.18 9 in )
4. 9 m m (0.19 3 in )
SNA P RING
CLUTC H EN DPLAT EClearanc e
ProCarManuals.com

DTC Indication Pattern (When the ABS control unit detected a problem three times.):

Turn the ignition

switch ON (II)

ABS

Indicator

light on

ABS

Indicator

light off
DTC:
4-2

Main Coda: 4

Sub-Code: 2

Connect the

SCS service

connector
2 Second Second

pause pause
5 Second

pause
1

Second

pause
5 Second

pause
1

Second

pause

2 Seconds

• Turn the ignition switch ON (II). The ABS indicator light comes on for two seconds to check the bulb.

• The ABS control unit indicates the DTC three times.

• If you miscount the blinking frequency or if you recheck the blinking frequency, turn the ignition switch OFF then

turn it ON (II) to cycle the ABS indicator light again.

4. Remove the SCS service connector.

NOTE: The Malfunction Indicator Lamp (MIL) will stay on after the engine is started if the SCS service connector is

connected.

5. Remove the ABS B2 (15 A) fuse in the under-hood fuse/relay box for at least three seconds to erase the ABS control

unit's memory.ProCarManuals.com

Diagnostic Trouble Code (DTC)

DTC Erasure

1. Pull the parking brake lever up.

2. Push and hold the TCS switch, then turn the ignition switch ON (II).

3. Hold the TCS switch pushed for four seconds (do not release the TCS switch), then release the TCS switch for less than

six seconds.

4. After three seconds, the TCS indicator light go off three times, then turn it on. It means that the DTC is erased.

NOTE:

• Follow these steps exactly. If you connect the SCS service connector and/or release the parking brake lever during

these steps, the DTC will not be erased.

• If the TCS indicator light blinks repeatedly, replace the TCS control unit.

Standard Indication Pattern

Abnormal Indication PatternProCarManuals.com

Camshaft

Inspection

NOTE:

• Do not rotate the camshaft during inspection.

• Remove the rocker arms and rocker shafts.

1. Put the camshaft and the camshaft holders on the

cylinder head, then tighten the bolts to the specified

torque.

Specified torque:

8 mm bolts: 22 N-m (2.2 kgf-m, 16 Ibf-ft)

Apply engine oil

6 mm bolts: 12 N-m (1.2 kgf-m, 8.7 Ibf-ft)

Apply engine oil

6 mm bolts:

2. Seat the camshaft by pushing it toward the distributor

end of cylinder head.

3. Zero the dial indicator against the end of the distrib-

utor drive, then push the camshaft back and forth

and read the end play.

Camshaft End Play:

Standard (New): 0.05 - 0.15 mm

(0.002 - 0.006 in)

Service Limit: 0.5 mm (0.02 in)
4. Remove the bolts, then remove the camshaft hold-

ers from the cylinder head.

— Lift the camshaft out of the cylinder head, wipe it

clean,
then
inspect
the
lift
ramps.
Replace
the

camshaft if lobes are pitted, scored, or excessively

worn.

— Clean the camshaft bearing surfaces in the cylin-

der head, then set the camshaft back in place.

— Insert a plastigage strip across each journal.

5. Install the camshaft holders, then tighten the bolts

to the specified torque shown in the left column of

this page.

6. Remove the camshaft holders. Measure the widest

portion of plastigage on each journal.

Camshaft-to-Holder Oil Clearance:

Standard (New): 0.050 - 0.089 mm

(0.0020 - 0.0035 in)

Service Limit: 0.15 mm (0.006 in)

PLASTIGAGE STRIPProCarManuals.com

Troubleshooting
Troubleshootin g Procedure s
How 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 .
MALFUNCTIONINDICATOR
LAM P
(MIL)
NOTE :
• Se e 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
Engin e Contro l Modul e (ECM ) 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 i s a driveabilit y problem , refe r t o th e Sympto m Char t o n pag e 11-36 .
C. DTC s will be indicate d by th e blinkin g of th e Malfunctio n Indicato r Lam p (MIL ) with the 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 vehicle. ) Tur n th e ignitio n switc h O N (II) .
DAT A LIN K CONNECTO R (16P )
OB D II SCA N TOO L o r
HOND A PG M TESTE R
SERVICE CHEC KCONNECTO R (2P )
SC S SERVIC E CONNECTO R
07PAZ-001010 0
ProCarManuals.com