2003 HONDA CIVIC remove the air cleaner

Engine Assembly
I
Engine Removal
Special Tools Required
Front subframe adapter EOS02C00001 1
NOTE:. Use fender covers to avoid damaging painted
surfaces.. To avoid damage, unplug the wiring connectors
carefully while holding the connector portion.. Mark all wiring and hoses to avoid misconnection.
Also, be sure that they do not contact other wiring orhoses, or interfere with other parts.
1. Secure the hood in the wide open position (support
rod in the lower hole).
2. Make sure you have the anti-theft code for the radio,
then write down the frequencies for the radio'spreset buttons.
3. Disconnect the negative cable from the battery first,then disconnect the positive cable.
4. Remove the battery.
5. Remove the intake manifold cover.
II
5-2
\,
6. Disconnectthe intake airtemperature (lAT) sensorconnector (A), remove the breather hose (B) and
vacuum hose (C), then remove the air cleaner
housing cover/intake air duct assemblv (D).
AC
7. Remove the air cleaner housing.

Gylinder Head Removal
NOTE:. Use fender covers to avoid damaging painted
surfaces.
To avoid damage, unplug the wiring connectors
carefully whlle holding the connector portion.
To avoid damaging the cylinder head, wait until the
engine coolant temperature drops below 100'F (38"C)
betore loosening the cylinder head bolts.
Mark all wiring and hoses to avoid misconnection.
Also, be sure that they do not contact other wiring or
hoses, or interfere with other parts.
'1.
2.
3.
Drain the engine coolant (see page 10-6).
Remove the drive belt (see page 4-26).
Remove the intake manifold {see page 9-3).
Remove the air cleaner housing (see step 7 on page
5-2t.
5. Remove the water bypass hose (A).
Remove the exhaust manifold (see page 9-7
Remove the cam chain (see page 6-12).
6.
7.
).
8. Remove the engine wire harness connectors and
wire harness clamps from the cylinder head.
. Engine coolant temperature (ECT) sensor
conneclor. Camshaft position (Cl\4P) (top dead center (TDC))
sensor B connector. Camshaft posilion (CMP) sensor A connector
9. Remove the upper radiator hose (A) and heater
hose (B).
'10. Remove the harness holder (A)from the bracket,
then remove the connecting pipe mounting boh {B)
and brake booster vacuum line mounting bolts {C).
(cont'd)
1 1. Remove the water bvpass hose (D).
6-23

Removal:
'1. Remove the intake manifold cover.
2.Remove the evaporative emission (EVAP) canister
hose (A), brake booster vacuum hose (B), and
vacuum hoses {C).
3. Disconnectthe intake airtemperature (lAT) sensor
connector (A), and remove the breather hose (B),
then remove the air cleaner housing cover/intake
air duct assembly (C).
4.Fully open the throttle link and cruise control link
by hand, then remove the throttle cable (A) and
cruise control cable (B) from the links. Loosen the
locknuts {C). and remove the cables from the
bracket.
(cont'd)
(
9-3

PGM-Fl System
ECT Sensor Replacement
'1. Remove the air cleaner {see page 11-162).
2. Disconnect the ECT sensor 2P connector.
3. Remove the ECT sensor (A).
{1.2 kgt m.8.7 lbt.ft}
reverse order of removallnstallthe sensor in the
with a new o-ring {B).
11-114
CMP Sensor B (TDC Sensorl
't.
2.
Replacement
Remove the air cleaner (see page 11-162).
Disconnect the CN4P sensor B (TDC sensor) 3P
conneclor.
Remove the CMP sensor B (TDC sensor) (A).
----
r, ".- ,',',., *nr...8.7 tbf.ftl
lnstallthe sensor in the reverse order of removal
with a new o-ring {B).
4.

VTEC/WC
1.
CMP Sensor A Replacement
Remove the air cleaner (see page 1 1-162).
Disconnect the CMP sensor A 3P connector.
Remove the CMP sensor A (A).
Installthe sensor in the reverse order of removal
with a new o-ring (B).
B-'-----'-l:,",14*
11-128
WEC Solenoid Valve Removal/
Inspection
1.Disconnect the VTEC solenoid valve 2P connector.
Measure resistance between VTEC solenoid valve
connector terminals No. 1 and No. 2.
Resistance: 14-30 Q
3. lf the resistance is within specifications, remove the
VTEC solenoid valve assemblv (A)from the
cylinder head, and check the VTEC solenoid valve
filter (B)for clogging. lf it is clogged, replace the
solenoid valve filter, the engine oilfilter, and the
engine oil.
6x1.0mm9.8 N.m (1.0 kgf.m, 7,2 lbf.ftl
L

Intake Air System
1. Remove the nuts (A) and the stud (B).
Air Cleaner Replacement
Remove the air cleaner (C).
Install in the reverse order of removal.
2.
3.
11-162
Air Cleaner Element Replacement
1. Disconnect the PCV hose 1A).
Open the air cleaner housing cover (B).
Remove the air cleaner (C) from the air cleaner
housing (D).
Install in the reverse order of removal.
2.
3.\,
4.
{0.3 kgf m,2lbf.ft)

Clutch Master Cylinder Replacement
NOTE: Do not spill brake fluid on the vehicle; it may
damage the paint; if brake fluid does contact the paint,
wash it off immediatelV with water.
1. Pry out the lock pin (A), and pullthe pedal pin (B)
out of the yoke. Remove the master cylinder
mounting nuts (C).
Remove the air cleaner housing cover and the air
cleaner housing (see step 6 on page 5-2).
Remove the brake fluid from the clutch master
cylinder reservoir with a syringe.
Remove the clutch line bracket from the frame rail,
and remove the clutch line clip.
Remove the clutch master cylinder (A), and pull it
toward the middle of the engine compartment.
Remove the retaining clip (B). Disconnect the clutch
line (C). Plug the end of the clutch line with a shop
towelto prevent brake fluid from coming out.
g-E
3.
6. Disconnect the reservoir hose (D) fromtheclutch
master cylinder reservoir. Plug the end of the
reservoir hose with a shop towel to prevent brake
fluid from coming out.
7. Remove the O-ring (E) and the clutch master
cylinder seal (F) from the master cylinder.
8. Installthe clutch master cylinder in the reverse
order of removal. Install a new O-ring.
9. Make sure the hose clamps (A) are positioned on
the master cylinder (B) and reservoir (C) as shown.
(cont'd)
UP
i
12-5

Slave Cylinder Replacement
NOTE:. Use fender covers to avoid damaging painted
surfaces.. Do not spill brake fluid on the vehicle; it may damage
the paint; if brake fluid does contact the paint, wash it
off immediately with water.
1. Write down the frequencies for the radio's preset
buttons. Disconnect the negative ( ) cable first,
then the positive (+)cable from the battery.
Remove the battery.
2. Remove the battery tray.
a
Remove the air cleaner housing cover and the air
cleaner housing (see step 6 on page 5-2).
Remove the intake air duct (see step 8 on page 5-3) .
Remove the clutch line bracket (A).
4.
5.
6. Remove the mounting bolts (A) andtheslave
cylinder (B).
Remove the roll pins (C). Disconnect the clutch line(D), and remove the O-ring (E). Plug the end of the
clutch line with a shop towel to prevent brake fluid
f rom coming out.
Installthe slave cylinder in the reverse order of
removal. Install a new O-ring (A).
7.
,,6NJ'
=--#.q!4sEn(P/N 08798-90021
9.
(Brak6 Assembly Lube)
Pullthe boot (B) back, and apply brake assembly
lube to the boot and slave cylinder rod (C). Reinstall
the boot.
Apply super high temp urea grease (P/N 08798-
9002) to the push rod of the slave cylinder. Tighten
the slave cylinder mounting bolts to 22 N m (2.2
kgf m, 16lbf.ft).
(cont'd)
12-7
10.