Page 98 HONDA INTEGRA 1994 4.G Workshop Manual

lntake Air System
Throttle Body
Description
The throttle body is ot the single-barrel side-draft 1ype.
The lower portion of the throttle valve is heated by en-gine coolant from the cylinder head. The idle adjusting
screw which increases/dec.eases bvDass air and the
Evaporative Emission (EVAP) Control Canister port are
located on the top of the throttle body.
IOLE AOJUSTING
THROTTLESTOP SCREW(Non-adiustsb16l
11-120
Insoection
CAUTION: Do not adiust the thlottle stop screw. lt ispreset at the lactory.
1. Start the engine. Hold the engine at 3,OOO rpm with
no load (A/T in S or E position, M/T in neutral) until
the radiator fan comes on, then let it idle.
2. Disconnect the vacuum hose (to the EVAP control
canister) from the top of the throttle body; connect
a vacuum, gauge to the throttle body.
VACUUM PUMPGAUGEA973X-O41-XXXXX
5.
3. Allow the engine to idle and check that the gauge
indicates no vacuum.
a li there is vacuum, check the throttle cable (see
page 1 1-'l 18, 119).
Check that vacuum is indicated on the gauge when
the throttle is opened slightly from idle.
a lf the gauge indicates no vacuum, check the throt-
tle body port. lf the throttle body port is clogged.
clean it with carburetor cleaner.
Stop the engine and check that the throttle cable
operates smoothly without binding or sticking.
a lf there are any abnormalities in the above steps,
check for:
- Excessive wear or Dlav in the throttle valve shaft.
Sticky or binding throttle lever at full close po-
srtron.
Clearance between throttle stop screw and throt-
tle lever at tull close Dosition.

Intake Air System
Throttle Body (cont'dl
11-122
Dirarssmbly
GAUTION:
a Ths throttlo stop scrow is non-adrustablo.
a Aftar reassombly, adiust rhr throttlo Gablo (pago 11-118, 1 19). and A/T throttlo contlol cabl6 (section 14) for c!r8
rYith A/T.
a Tho TP sonaor ir not lomovablo
MAPSENSORTroubleshootingpage 11-52
TPSETSORTroubleshootingpoge 1l-60
O.BING
I
d^'%
IDLE ADJUSTINGSCREW
o-RtftGReplace.
FAST IDLETHERMOVALVEInspection, page 11-94
1O N.m11.O kgl.m.7 tbf.ftl

(From page 1 1-124)
Raise engine speed to above6,000 rpm.
Disconnect the 2P connector tromthe IAB control solenoid valve.
Turn the ignition switch OFF.
Check for continuity to ground onthe PNK/BLU wire.
Ropair short to g.ound
at PNK/BLU wiro bo-two6n ECM {A17) andtho 2P connector.
ls there continuity to ground?
Substituto a known-good ECMand racheck. It symptom goos
swsy, roplace tho original ECM.
{From pago 1 1-124}
Repsir op6n in YEL/BLKwiro botwoon tho 2Pconnector and FGM-FImain relaY.
ls there battery voltage?
Turn the ignition swirch OFF.
Connect lhe test harness betweenthe ECM and connectors lseepage 11-37).
Turn the ignition switch ON andconnect a lumper wke betweenECM (A17) terminal and ECM
{A26) terminal.
Ropaiiopon inP K/BLUwiao botwoen ECM
lAl7l and tho 2P con-nectot.
Ooes the solenoid valve clickwhen the jumper is con-nected?
Sub3titute a known-good ECMand rechock. lf symptom/indica-tion goos away, r6place tho origi-nal ECM.
Check lor vacuum at #'l3 vacu-um hose.
IAB control syst6m is OK.
11-125

Emission Control System
System Troubleshooting Guide
NOTE: Across each row in the chart, the sub-systems that could be sources of a symptom are lanked in the ord€r they
should be inspected starting with O. Find the symptom in the lett column, read across to the most likely source, then
reJer to the page list€d at the top of that column. lf inspection shows the system is OK, try the next most likely system
@, etc.
PAGE
SYMPTOM
SUB.SYSTEMTHREE WAY
CATALYTIC
CONVERTER
POSITIVE
CRANKCASE
VENTILATION
SYSTEM
EVAPORATIVE
EMtSSTON
CONTROLS
11-132, 1331 1- 13411tJo
ROUGH IDLEo
POOR PERFORMANCE
FAILS
EMISStON
TEST
o@
LOSS OF
POWERo
11-129

Emission Control System
SystemDescription
The emission control system includes a Three Way Cata-
lytic Convener (TWC), Positive Crankcase Ventilation(PCV) system and Evaporstive Emission {EVAP) Contfol
syst€m. The emission control system is designed to meet
federsl and stats emission standards.
Tailpipe Emission
Inspection
f!fifil oo nor amoro ou]rng rnr! Foacqurr. ^!op
any open flame away from yout wotk atca.
Start the engine. Hold the engine at 3,OOO rpm with
no load (A/T in @ or@ position, M/T in neutral) until
the radiator fan comes on, then let it idle,
Connect a tachometer.
Check and adiust the idle speed, if necessary (sss
page 1 1-95).
Warm up and calibrate the CO meter according to
the meter manutacturer's inst.uctions.
Check idle CO with the headlights, hester blower,
rear window defogger, cooling fan, and air condition-
er otf.
NOTE: (Canada) Pull the parking br8ke lever up.
Stan the engine, then check that the headlights are
off.
CO meter should indicate 0.1 maximum.
11-130

#7 VACUUM HOSE
Troublclhooting
VACUUM PUMP/GAUGEA973X-O41-XXXXX
EVAP PTJBGE COI{TROLDIAPHRAGM VALVE
EVAPPUBGE CONTROL
Bl8Bl .noin.:YEL/BLK I+I
(-t
wirg aide
--\
EVAPR'RGE COI{TROLSOLENOID VALVE
(cont'd)
VALVE
YEL/BLK (+I
Disconn€ct #7 vacuum hose
trom the EVAP putgo control di'
aph.agm valve lon the EVAPcon-
t.ol canistor) and connoct a
vacuum gauge to tho hose.
Stsrt the €ngine and allow it toidls.NOTE: Engine coolant tempera-
ture must be b€low 163oF (73ocl
Oisconnect the 2P connegtor trom
the EVAP purge control solenoid
Mea suro voltago betw€enYEL/BLK {+) terminsl 6nd RED
l-) terminal.
Inapact vacuum hoa€ror.ring.l| OK, toolrc. EVAPpurgo conttol solenoidls ther6 battery voltage?
Moasule voltage botweenYEL/BLK {+) terminal bodYground.
(To pa96 1 1- 138)
(To page 1 'l -139)
11-137

(From page 1 1-137)
lTo page 1 1-'l39)
Start the engine. Hold the engineat 3,OOO rom with no load lA/T in
E orE position, M/T in neutrsl)unlil lhe radiator tan comes on.then let it idle.
Check lor vacuum at # 7 vacuumhose alter starting the engine.
Oisconnect the 2P connoctor fromthe EVAP purge control solenoid
Intpoct vacuum hoaarcuting.It OK, reolrco tr|c EVAP
Purge contlol lolanoid
ls there manifold vacuum?
Inrpoct for a short i|t RED wire bo-lwoen ECM {A2Ol and th6 con-noclor.ll wiro la OK, substituto a known-good ECM 6nd .echock. lf symp-tom goes away, loplace tho origi-nal ECM.
Ropair opon in YEL/BLKwirc b.tw..n EVAPpurgo control rolanoidvrlvo and th. xiM-Flmlin r6lay.
ls there baftery voltage?
Inspoct RED wirc for 6n opon totrody g.ound botween ECM lA20)and th6 conn6ctor.It wir. b OK, substiluto a known-good ECM and rochock, It sym-ptom 9o6s away, roplaco thooriginal ECM,
Emission Gontrol System
Evaporative Emission (EVAP) Gontrols (cont'd)
{From page 11-137}
11-138

Special Tools
Ref. No, I Tool NumberDescriptionOty Page Reference
o/^
ri)
@
@
OTJAF_PM7011A
OTLAB PVOO1 OO or
o7 924-PD20003
07NAF-PR30100
07746-0010100
07749-OO10000
07936-3710100
Clutch Alignment Disc
Ring Gear Holder
Clutch Alignment Shaft
Attachment, 32 x 35 mm
Driver
Handle
'I
1
I
1
I
I
12,7
12-1, 8, 9, 10
12-7 , 8, 10
12-10
12-10
12-1 , 8, 10
I
12-2

lllustrated Index
NOTE:
a Whenever the transmission is removed, clean and grease the release bearing sliding sudace.
a It the pans marked r are removed. the clutch hydraulic system must be bled (see page 12-6).
a Inspect the hoses lor damage, leaks, interterence, and twisting.
*RESERVOIR
HOSEASSISI SPRING
PEDAL PIN
CLUTCH PEDALAdjustment,page 12-4
15 N.m 11.5 kgl.m,11 tbt.ftl
6 x 1,0 mm9.8 N.m ll.0 ksf.m, 7 lbf.tt)
FLYWHEELInspection. page 12-9Replacement, page 12-9
TCLUTCH MASTER CYLINDERRemoval/lnstallation, page 1 2-5
19 N.m ll.9 kgt.m,14 lbf.ftl
.CLUTCH PIPE
15 N.m {1.5 kgl.m,1 1 rbf.ft)
ICLUTCH PIPE
JOtt{T
8 x 1.25 mm25 N.m (2.6 kgl.m,19 lbt.ttl
RELEASE BEARINGRomovaf /lnspection, page 1 2-1 1lnstaffation, page 1 2- 1 2
TRANSMISSIONRomoval. see
CLUTCH DISCRemoval/lnspection. page'1 2-8Installation, page 12-10
8 x 1.25 mm22 N.m (2.2 kgf.m.16 lbl.rr)
section 1312 x 1.0 mm103 N.m llO.5 kgt.m,76 rbf.ftl
PRESSURE PLATERemoval/lnspection. page 1 2-7Installation, page 12,10
TSLAVE CYLINDERRemovaf /lnstallation. page 1 2-632 N.m {3.3 kgf'm,24 tbf.ftl
15 N. m {1.5 kgf.m,'| I tbf.ftl
COTTERBeplace.
I
NInl
9t
v-_fl
ICLUTCH
12-3

Adjustment
NOTE:
a To check the clutch interlock switch and clutch
switch, see seclion 23.
a The clutch is selt-adjusting to compensate for wear.
CAUTION: It there is no clearanco between the mastel
cylinder piston and push lod. the releaso boaring is held
againsl the diaphragm spring, which can result in clutch
slippage 01 othel clutch problems.
Loosen locknut A, and back otf the clutch switch
{or adjusting bolt) until it no longer touches the clutch
pedal.
Loosen locknut C, and turn the push rod in or out
to get the specified stroke (@) and height (O) at the
clutch pedal.
Tighten locknut C.
Turn the clutch switch (or adjusting bolt) until it con-
tacts the clutch pedal.
Turn the clutch switch (or adjusting bolt) in 3/4 to
1 full turn further.
Tighten locknur A.
7. Loosen locknut B and the clutch interlock switch.
8. Measure the clearance between the tloor board and
clutch pedal with the clutch pedal tully depressed.
9. Release the clutch pedal 15-20 mm {O.59-O.79
in) from the fully depressed position and hold it there.
Adiust the position of the clutch interlock switch so
that the engine will start with the clutch pedal in this
oosition.
1 0. Turn clutch interlock switch 3/4 to 1 tull turn funher.
11. Tighten locknut B.
LOCKNUT B9.8 N.m (1.0 kgf.m, 7 lbf.ftl
CLUTCH INTERLOCKswtrcH
6.
1.
2.
ASSIST SPRING
-6ll
LOCKNUT Cl3 N.m l'l.3 kgf.m, 9
CLUTCH SWITCH{or AOJUSTING BOLTI
LOCKNUT A9.8 {N.ml (1.0 kgl.m, 7 lbt.ftl
(STROKE at PEDALI: 130-140 mm 15.12-5.51 in){TOTAL CLUTCH PEDAL FREE PLAY): 12-21 mm 10.47-0.83 inl including tho p.dal play I -lO mm 10.04-0.39 inl{CLUTCH PEDAL HEIGHTI: 164 mm (6.46 in} to tho lloot{CLUTCH PEDAL DISENGAGEMENT HEIGHTI: 83 mm 13.27 inl minimum to tho lloo.
PUSH ROD
CLUTCH MASTER CYLINDER
Clutch Pedalctutch Pedat I
[-],ll'"-"" f
| :;i:'":fff*tr#:?iff:".,*::,::". | .#::J:::
sb''''""
| |
| "orr,O", It there is no clearanco between the master | ,. aoo""n locknut B and the clutch intertoct switcl. | |cylinder piston and push lod. the releaso boaring is held | | Iagainst the diaphragm spring, which can result in clutch | 8. Measure tne clearance between the floor board and I Islippage 01 othel clutch problems.
I
clutch pedal with the clutch pedal tully deeressed.
I I1. Loosen locknut A, and back otf the clutch switch | 9. Release the clutch pedal 15-2O mm (O.59-O.79 I I
{or adiusting boltl until it no longer touches the clutch I int trom ttre fully depressed position and hold it there. I I
, ::":"" rocknut c, and rurn the push rod in or out | iliiiliffi:l1l:J"'1"-:H"l:tJ:i"i#fT: I I
. il*:*j':"'-(@)andheisht(olatthe
|
,:.;:,nterrockswitch3/4torrurrturnturtner.
I tf
,
::
***r**''
.,".,u"**;
|
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I I