1994 HONDA INTEGRA Workshop Manual

VTEC
Ref€r to page 11-32 thru I l-39 beforo troubleshooting.
-g: -mi !5*3ij'i:,*o:",,XTl.Lamp
(MlL) indicates Disenostic rrouble code (Drc) 2r:A problem in the wEc
\,__-:-/ \.---l-l
Iel- -l 2,1 l-
MIL h.. b..n Fport d on.Wrth aaavica chack connac,tot
iomp.d, Codc 2l i. indic.t.d.
Oo tho ongino control module(ECM) Rg3ot Procgduro.
w6rrn up engine to normal op€r-ating tsmporature (the coolingfan comog on).
Do th€ Road Test.'
lmormitt.m t ilur., .yrtom i. OK!t thi.tim..Chacl tor poor connactiont otloo.. wircr !l VTEC .ol.noidv.lv. lnd ECM.
ls MIL on and does it indi-cato cod€ 21?
Turn tho ignition switch OFF.
Oisconnect tho 1P connsctorlrom the VTEC solenoid valvo.
Chock for continuity betw66n 1Pconn6clor terminal and body
9rcUnO.
ls there '14 - 30 07R.pl.c. th. VTEC rolonoid v.lvr,
' Road Test:Accelerate in 1st gear to 6n engino spood ovor 6000 rpm.Hold thst engine sp€ed tor at least two seconds.lflhe MIL do6s not coms on during th€ first road tost,reoeat this test two more tim95.
YES
(To pago G37l
6-36

{From pag6 636}
ContinuityT
ooooooooooo
ooooooooooo
ooooooooooooo
ooooooooooooo
Ch6ck for continuity botw6en 'lP
connector t€rminal and A4 termi-nal.
B.9.lr op.n in th. GRI{/YEL wircb.tw..n ECM {Aa} .od vTEcaolanoid valva connac'tor.
Ch6ck for continuity botwoon 1Pconnector terminal (harness side)and body ground.
Ro.ir .hon i|r th. GRN/VEL wirc
b.iw..n ECM (A4l .nd VTECaoldroid valv. Gonnac'tor.
Sub.titut! . krown-good ECM|r|d r.ch!ck. lt .ytnptom/indic!-tion gor3 away rrplact tha origi-n.l Ecttl,
6-37

wEc
6-38
Troubleshooting Flowchart - VTEC Pressure Switch
Refer to page 11-32thru 11-39 beJore troubleshooting'
-.+- -r";-r- Malfunction Indicator Lamp (MlL) indicates Oiagnostic Troubles Code (DTC) 22: A problem in the VTEC- l{{?l- ;l ziz r: pressur€ Switch circuit.
-lr@l- |22 1-
* Road Test:Accolerato in lst gear to an engine speed over 6000 rpm
Hold that engine speed for at least two seconos'
lf the MIL does not come on during the first road test'
reoeat this test two more limes.
- MIL har bagn.oportcd on.- With t.rvic. chack connactor
iump.d, cod€ 22 it indic.t.d.
Do the engine control module(ECM)Reset Procedure.
Warm !p engine to normal oper-
ating temperstur€ (cooling fan
comes on).
Do the Boad T€st.'
Intc.mift.nt failu.o, ry3tom ia OK
at thi. tim..Chack for pool connaction3 ol
loo!. rvirat at VTEC Ptasturo3whch and ECM.
ls MIL on and does it indi'
cate code 22?
Turn lhe ignition switch OFF
Disconnect the 2P connector
lrom the VTEC Pressure switch.
Check Ior continuity between
BLK terminal and body ground.
Rcpair opcn in BLK wit. botwcon
2P connector rnd body ground
tG101l.
Check for continuity between
8LU/8LK terminal and D6 termi'
nal.
(To page 6 39)

(From page 6-38)
Ropair op€n in BLU/BLK $,iro between ECM lD6) and 2P conn.c-tor,
Check for continuity between D6terminal and body ground.
R6pri. short in BLU/BLK wir. bc-tweon ECM (D6l .nd 2P connec-toa,
Remove 10 mm sealing bolt andconnect orl pressure gauge.
Connect a tachometer {soe sec-tion 11).
Start the engine and warm it upto normal operatrng temperature.
Check oil pressure at enginespeeds of 1,000, 3,000 and 5,000rpm,
ls pressure bolow 50 kPa(0.5 kgflcm', 7 psi)?Inrpoct tho VTEC aolanoid v.lv..
Turn off the engine.Check lor continuity between the2 terminals on the VTEC pressure
switch.
o oooooo ooo ooo I oooooooo trt!*Hffi Oooooo ooooo
o oooo ooooo ooo I oo oooo ooo ooooo oo oo o
Coitlnuity?
D6
I
GAUGE JOINT ADAPTERSNAPON MT2&1710 x 1.0 mm. lJse new washer wheninstalling the sealing bolt.
Y AVAILAEIIOIL PRESSURE GAUGE


\-
]L
vtEc sot-€NotD
(cont'd)
NOTE:Keep mgasuring time as short as possible bocaus€ engine isrunning with no load (less than one minute).
YES
(To page 6-40)
Conlinuity?
6-39

VTEC
Troubleshooting FlowchartVTEC Pressure Switch (cont'dl
lFrom pag6 6-39)
Disconnsct lhe 1P connectortrom the VTEC sol6noid valve.
Attach the battery positivo torminal to the GRN/WHT terminal.
Start the engine and chgck oilpressure at 5,000 rpm (lor VTECoil pr€ssure test).
ls pressure above 400 kPa(4kgt/cm,, 60 psi)?In.p.ct th. VIEC .olrnoid v.lv..
Check tor continuity betwe6n the2 terminsls on th€ VTEC prsssure
switch !nder above condition.
Sub.titut. . klown-eood ECMand rachack. |f aymplom/indica-tion goaa away rrplaca th. o?igi-n.l ECM.
u
OOMMERCIALLY AVAILABIIOIL PRESSURE GAUGE
GAUGE JOIMf ADAPIORSNAPON MT2S1'10x 1.0 mm. Use new washer wheninstalling th6 soaling bolt.NOTE:Keep moasuring tim6 as shon 6s possi-
ble because engine i5 running with noload lless than ono minuto).

WEC Solenoid Valve Inspection
Disconnect the 1P connector trom the VTEC
solenoid valve.
M€asurs resistance between th€ terminal 8nd body
grouno.
R.3bt!nc!: 1l - 30 O
lf the resistance is within specificstions, romove the
WEC sol€noid valve from the cvlindor hsad, and
check the VTEC solenoid valve filter for clogging.
. lf there is clogging, replacs the engin€ oil filter
and the engine oil.
VTEC SOT.CNOTD
12 tTln 11.2 kg[.m,8.7 lbttt]
6-41
4. lf th6 filter is not clogged, push the VTEC solenoid
valv€ with your finger and check its movement.
. lf VTEC solsnoid valve is normal, check the
engins oil pr€ssure.
6x1.0mm

VTEC
Rocker Armsnlrungf rtrrrri' - rYrorrtrcr rrrDPEUtrl,rl
1. Set rh6 No. I Diston at TDC.
2. Remove the ignition wire cover and the wires.
3. Remove the ignition clamps while pulling up on the
lock.
4.Remove the cylinder head cover.
Push the mid rocker arm on the No. 1 cylinder man-
ually.
Check that the mid rocker arm moves independent-
ly of the primary and secondary rocker arms.
6 x 1.0.nm9.8 N.m 11.0 lgfm, 7.2 lbf.ftl
SECONDARYROCKER ARM
7. Check the mid rocker arm of each cvlinder at TDC.
. lf the mid rocker arm does not move, remove the
mid, primary and secondary rocker arms as an
assembly and check that the pistons in the mid
and primary rocker arms move smoothly.
. lf any rocker arm needs replacing, replace the
primary, mid, and secondary rocker arms as an
assemblv.
NOTE: Refer to page 6-78 when installing cylinder head
cover.
w

Rocker Arms - Inspection Using Special Tools
CAUTION:
. Boforo using tho valvo inspoction tool. make 3uro
that th6 air prsssure gaugs on th6 air comprossol
indicatG over 250 kPa {2.5 kgf/cm', 36 psi}
. Inspect the valvs clearanco befors rockel lrm insPoc-
tion.
. Covor the timing belt with a shop towsl to pl€vent
qotting oil on lhe b6lt.
. Check ths mid rocker srm of oach cylindor at TDC.
1. Remove the cylinder head cover.
2. Plug the relief hole wiih the special tool (Air
Stopper).
Remove the bolt and washer from the inspection
hole and connect the valve inspection tool
AIR STOPPEBOTLA' - PR3O2OA
3.
REGULATOR VALVE. Pullths lever andturn to adjust.INSPECTIONHOtt
WASHERReplace.
10 x 1.0 mm20 N.m 12.0 kgf.m,1a tbt'ft|
TOOL
RELIEF HOLE
ICOMMERCIALLY AVAILABLE}
6-43
Apply specified air pressure to the rocker arm pis-
tons after loosening the regulator valve on the valve
inspection tool.
Specified Air Presrure:
250 kPa (2.5 kgt/cm', 36 psi)
- 500 kPa 15.0 kgf/cm'. 71 Psi)
Make sure that the primary and secondary rocker
arms are mechanically connected by the pistons
and that the mid rocker arms do not move when
pushed manuallv.
LOST MOTIONASSEMALY
PfiIMARYROCKER ARM
6.
7.
o lf any mid rocker arm moves independently of
tho primary and secondary rocker arms, replace
the rocker arms as a set.
Remove the tools.
Check the oDeration of the lost motion assembly by
pushing on the mid rocker arm. The lost motion
assemblv should compress fully and operate
smoothly through its full stroke. Replace the assem-
bly if it does not work smoothlY.
8. After insoection, check that the Malfunction
Indicator LamD (MlL) does not come on
NOTE: Refer to page 6-78 when installing cylinder head
cover.