check engine HONDA CIVIC 1999 6.G Owner's Guide

(From page 6'4)
Test the VTEC Solenoid Valve:1. Turn the ignition switch OFF.2. Disconnect the wEC solenoidvalve 1P connector.3. Attach the battery positave
terminal to the VTEC solenoidvalve terminal.4. Start the engine and checkthe oil pressure at enginespeed of 5,000 rpm.
Inspect lhe VTEC solonoid valve
lsee p6ge m).ls the pressure above 390 kPa(4.0 kgtcm',57 psi)?
Test the VTEC Pressure Switch:With the battery positive terminalconnected to the VTEC solenoidvalve, measure voltage betweenthe ECM/PCM connector terminal'96 - 98: Cl5,'99 - 00: C10 andbody ground.
ls there battery voltage above5,000 rpm?
T6st the VTEC Solenoid Valvewire:1. Turn the ignition switch OFF.2. Check for continuity betweenthe VTEC solenoid valve 1Pconnector terminal and theECM/PCM connector terminal'96 - 98: A8, '99 00r B'12.
Repair open in the wire betweenthe ECM/PCM ('96 - 98: A8, '99 -
0o: 8l2l and VTEC solenoid v.lv6connoc{or.
Test the VTEC Solenoid Valve
Check for continuity between theVTEC solenoid valve 1P connectorterminal €nd body ground.
ReDair 3hort in the wire betweenthe ECM/FCM ('96 - 98: A.8, '99 -
0O: Bl2l and VTEC aolenoid valveconnectot,
ls there continuity?
Substitute a known-good ECM/PCM and recheck. lf symptom/indication goes away, replacethe original ECM/PCM.
VTEC SOLENOID VALVE1P CONNECTOR
Terminalside ofmale terminal
ECM/PCM CONNECTOR C {31P}
'99 - 00:'96 - 98:
CONNECTOR
'99 - 00:
VTEC SOLENOIDVALVE
ECM/PCM CONNECTORB {25Pt1P CONNECTOR'96 - 98:
VTEC SOLENOIDVALVE
ECM/PCM CONNECTOR
A {32P1
VTS{GRN/YEL)
wire side o{ femaleterminals
wire side oI temaleterminals
VTM

VTEC Solenoid Valve
Inspection
1.
6x1.0mm12 N.m 11.2 kgf.m,8.7 lbtft)
Disconnect the 1P connector from the VTEC sole-noid valve.
Measure resistance between the terminal and bodyground.
Resistance: l4 - 30 O
lf the resistance is within specifications, remove theVTEC solenoid valve assembly from the cylinder
head, and check the VTEC solenoid valve filter for
cloggrng.
. lf there is clogging, replace the engine oil filterand the engine oil.
VTEC SOLENOID VAI-VE ASSEMBLY
6-6
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4. lf the filter is not clogged, push the VTEC solenoidvalve with your finger and check its movement.
. lf the VTEC solenoid valve is normal. check the
engane oil pressure.
6x1.0mm12 N.m {1.2 kgt.m,8.7lbf.ft)
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VTEC Rocker Arms
2.
Manual Inspection (D16Y5 engine)
3.
1.
4.
Set the No. 1 piston at TDC.
Remove the cylinder head cover.
NOTE: Refer to page 6-46 when installing the cylin-
der head cover.
Move the intake secondary rocker arm on the No. 'l
cylinder manually.
Check that the intake secondary rocker arm moves
independently of the primary intake rocker arm,
SECoNDARY PtROCKER ARM. Push and pull.
Check the intake secondary
cylinder at TDC.
rocker arm of each
a lf the intake secondary rocker arm does not move,
remove the primary and secondary intake rocker
arms as an assembly and check that the pistons in
the secondary and primary rocker arms move
smoothly.
a lf any rocker arm needs replacing, replace the pri-
mary and secondary rocker arms as an assembly.
PRIMARY ROCKER ARM
4.
Manual Inspection (D16YB engine)
1.Set the No. 1 piston at TDC.
Remove the cylinder head cover.
NOTE: Reter to page 6-46 when installing the cylin-
der head cover.
Push the intake mid rocker arm on the No. 1 cylin-
der manually.
Check that the intake mid rocker arm moves indepen-
dently of the primary and secondary intake rocker
arms.
MID ROCKERARM
Check the intake mid rocker arm of each cylinder at
TDC,
lf the intake mid rocker arm does not move.
remove the mid, primary and secondary intake
rocker arms as an assembly and check that the pis-
tons 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
assemory.
5,
6-7

VTEC Rocker Arms
Inspection Using SpecialTools (Dl6Y5 enginel
CAUTION:
. Before using th6 Valve Inspection Tool, make 3ure
that ths air pressure gaugo on the air comptsssor
indicates over iloo kPa 14 kgf/cmr, 57 psi).
. Inspecl th6 valv€ clearance beforo rocker atm insDec"
tion,
'1.
Cover the timing belt with a shop towel to protect tho
belt.
Check ths intakg primaty rocker arm of each cylindqr atTDC.
Remove the cylinder head cover.
NOTE: Refer to page 6-46 when installing the cylin-
der head cover.
Plug the relief hole with the special tool.
YY
OTLAJ - PR3O2OB
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3, Remove the sealing bolt from the inspection holeand connect the an air pressure regulator with a 0 -
100 psi gauge.
10 x 1.0 mmSEALING BOLT20 N.m {2.0 kgj'm. 14lblft}
l
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'10 x 1.0 mmADAPTER;NSp€CTTONHOLE (Commercially
available)
l'Pullthe dial andturn to adlust,
Loosen the regulator valve on the valve inspection
tool and apply the specified air pressure.
Spocified Air Pressurei
250 kPa {2.5 kg,t/cm,,36 psi}
o-at

VTEC Rocker Arms
Inspection Using Special Tools (D16Y8 enginel
CAUTION:
o Before using the Valve Inspection Tool. mak6 surethat the air pressure gauge on the air comprsssor
indicates ovor 400 kPa {4 kgf/cm,, 57 psil.
. Inspect th6 valve clearanco before rockar arm inspec-
tion.
. Cov€r th€ timing belt with a shop towel to protect
the bolt.
. Check tho intake prima.y rockff arm of each cylindel
at TDC.
1.Remove the cylinder head cover.
NOTE: Refer to page 6-46 when installing the cylinder
neao cover,
Plug the relief hole with the specialtool.
OTLAJ - PR3O2OB
I,^ A IAo- tu
3. Remove the sealing bolt from the inspection hole
ancl connect an air pressure regulator with a 0 - 100psi gauge.
l0 x 1.0 mmSEALING EOLT20 N.m (2.0 kgf.m, 14 lbf.ft)
(AIR PRESSUREREGULATOR
{Commerciallyavailable). Pullthe dialandturn to adjust,

6, Remove the camshaft holders. then measure the
widest ponion of the plastigage on each journal.
Camshaft-to-Holder Oil Clearance:
Standard lNew):0.050 - 0.08!t mm
{0.002 - 0.004 in}
Service Limit : 0.15 mm {0.006 in)
lf the camshaft-to-holder oil clearance is out ot tol-
erance:- And the camshaft has already been replaced,
you must replace the cylinder head.
- lf 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 inl max.
Service Limit: 0.04 mm {0.(X)2 in)
-7.
Rotate camshattwhile measuring.
L
- lf the total runout of the camshaft is within toler-
ance, replace the cylinder head.
- lf the total runout is out of tolerance, replace the
camshaft and recheck the camshaft-to-holder oil
clearance. lf the oil clearance is still out of toler-
ance. replace the cylinder head.
INTAKEEXHAUST
O16Y/ engine35.299 (1.3897)37.281 (1.4678)
D16Y5
engrne
PRI38.427 11.5129138.784 (1.5269)
SEC32.193 (1.2674)
D l6Y8
engrne
PRI36.77811.44791
38.008 (1.4964)MID38.274 (1.5068)
sEu37.065 (1.4592)
8. Check the cam lobe height wear.
Cam lobe height standard (New)
t/g a* rN Ex
- D16Y5 engine
PRI; Primary cam lobe, SEC: Secondary cam lobe
MtD: Mid cam lobe. T/B: Timing belt
lN: Intake, EX: Exhaust
PRIsEcMIDSEC
rts
- Dl6YE ongine
Unit mm (in)
Check this area {or wear.
6-37

Valves
Reaming
NOTE: For new valve guides only.
1. Coat both the reamer and valve guide with cufting
orl.
2. Rotate the reamer clockwise the full length of the
valve guide bore.
3. Continue to rotate the reamer clockwise while
removing it from the bore.
4. Thoroughly wash the guide in detergent and water
to remove any cutting residue.
5. Check the clearance with a valve (see page 6-391.
Verify that the valve slides in the valve guide with-
out exerting Pressure.
Turn reamer inclockwise direclionon ly.
REAMER, 5.5 mmO7HAH. PJ'O'IOB
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REAMER
oa)o,
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1.
lnstallation
Coat valve stems with engine oil. Insert the valves
in the valve guides.
NOTE: Make sure lhe valves move up and clown
smoothly.
lnstallthe spring seats on the cylinder head.
Install the valve seals using the valve guide seal
installer.
NOTE: Exhaust and intake valve seals are not inter-
changeable.
2.
3.
WHITESPRINGBLACKSPRING
INTAKE VALVE SEALEXHAUST VALVE SEAL
VALVE GUIDE SEALINSTALLERKD2899 (Commercially available)NOTE: Use small lD end of
P
(cont'd)
6-43

Cylinder Head
Installation (cont'dl
Position the camshaft correctly (see page 6-20).
Tighten the cylinder head bolts sequentially in four
steps.
rsr st.p: O - @ 20 N.m (2.0 kgf.m, 14 lbf'ft|
2nd srep: O - @ 49 N.m (5.0 kgf.m, 36 tbtft)
3rd stop; O - @ 67 N.m {6.8 kgf.m, /r9 lbl'ft}
4th st6p: O, O 67 N.m 16.8 kgf.m, 49 tbf.ftl
NOTE:
. We recommend using a beam-type torque
wrench, When using a preset-type torque wrench.
be sure to tighten slowly and not to overtighten.
. If a bolt makesany noisewhileyou aretorquing it,
loosen the bolt, and retighten it from the 1st step,
CYLINDER HEAD BOLTS TOROUE SEOUENCE:
Install the intake manifold and tighten the nuts in a
crisscross pattern in two or three steps, beginning
with the inner nuts (see pages 9-2 thru 9-4).
. Always use a new intake manifold gasket.
Install the exhaust manifold and tighten the nuts in
a crisscross pattern in two or three steps, beginning
with the inner nut {see pages 9-6 and g-7).
. Always use a new exhaust manifold gasket.
Install the exhaust manifold bracket. lnstall the
exhaust pipe A and the bracket, then install the cover.
4.
6-46
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7.Installthe timing belt (see page 6-20).
Adjust the valve clearance (see page el2),
Install the head cover gasket in the groove of the
cylinder head cover, Seat the recesses for the
camshaft first, then work it into the groove around
the outside edges.
NOTE:
. Before installing the head cover gasket, thor-
oughly clean the seal and the groove.
. When installing, make sure the head cover gas-
ket is seated securely in the corners of the
recesses wath no gap.
COBNERS OFTHE RECESS
CORNERS OFTHE REcEss covEB
Apply liquid gasket to the head cover gasket at the
four corners of the recesses.
NOTE:
. Use liquid gasket, Pan No. 08718 - 0001 or 08718- 0003.
. Check that the mating surfaces are clean and dry
before applying liquid gasket.
. Do not install the parts if five minutes or more
have elapsed since applying liquid gasket.
Instead, reapply liquid gasket after removing old
residue.
. After assembly, wait at least 30 minutes before
filling the engine with oil.
8.
9.
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11. When installing the cylinder head cover, hold the
head cover gasket in the groove by placing your fin-
gers on the camshaft holder contacting surfaces
(top of the semicircles)
Set the spark plug seal on the spark plug tube.
Once the cylinder head cover is on the cylinder
head, slide the cover slightly back and forth to seat
the head cover gasket.
NOTE:
. Before installing the cylinder head cover, clean
the cylinder head contacting surfaces with a
shop towel.
. Do not touch the parts where liquid gasket was
aDolied.
. Take care not to damage the spark plug seals
when installing the cylinder head cover,
. Visually check the spark plug seals for damage.
. Replace any washer that is damaged or deterio-
rated.
6x1.0mm9.8 N.m 11.0 ksf.m,7.2lbf ftl
\g-----*o""t'Ptl
veEE
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6-47
12. Tighten the nuts in two or thre€ steps. In the final
step, tighten all bolts, in sequence, to 9 8 N'm (1.0
kgf.m, 7.2 lbf.ft).
NOTE: After assemblv, wait at least 30 minutes
before filling the engine with oil
After installation, check that all tubes, hosss and
connectors are installed correctlY
1?

VTEC Control SYstem
The scan tool indicates Diagnostic Trouble Code {DTC) Pl259:
VTEC Solenoid Valve circuit
Refer to page 1'l-38 through 11 55 before troubleshooting
Troubleshooting Flowchart
YES
A problem in the WEC Pressure Switch circuit or
* Road Test:Accelerate in 1st gear to an engine speed over 6,000 rp '
Hold that engine speed for at leasttwo seconos'
lf the DTC P1259 is not repeated during the first road test'
repeat this test two more times
VTEC PRESSURE SWITCH 2P
CONNECTOR
Terminalside ofmale termtnals
WM
/1 IBLU/BLKI
/ 1 Y------rt--------- l I
\1-/ |I
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Wire side of femaleterminals
(cont'd)
6-51
The MIL has been teported on.
DTC P1259 is siored.
Check the VTEC Control SYsiem:
1. Do the engine control module(ECM ) Reset Procedure (see
section 11).
2. Start the engine
3. Warm uP the engine to normal
operating temPerature (cool
ing fan comes on).
4. Do the Road Test.*lntermittent failure, sYstem is OK
at this time.Check for Poor connectlons or
loose wires at VTEC Pressureswilch. VTEC aolenoid valvo and
ECM.
ls DTC P1259 indicated?
Test the VTEC Pressure Switch:
1. Turn the ignition switch OFF.
2. Disconnect the VTEC Pressure
switch 2P connector.
3. Check for continuity between
VTEC pressure switch 2P con
nector telminal No 1 and
No.2.
Reolace the VTEC Pre3sure switch.
Test the VTEC Pressure Switch
Wire:1. Turn the ignition switch ON (ll).
2. N4easure the voltage between
VTEC press u re switch 2P
connector No. 1 and bodyground,
Inspect lor an open or short toground in the wire between the
VTEC orassure swilch and ECM
{c101.lf the wire i3 OK, substitute a
known-good ECM and recheck.
{To page 6 52)