engine HONDA CIVIC 2004 7.G Workshop Manual

If the indicator remains on, or the
f uel cap was not loose or missing,
have the vehicle checked by the
dealer as soon as possible.
Your vehicle has certain ‘‘readiness
codes’’ that are part of the on-board
diagnostics f or the emissions
systems. In some states, part of the
emissions testing is to make sure
these codes are set. If they are not
set, the test cannot be completed.If your vehicle battery has been
disconnected or gone dead, these
codes are erased. If takes at least
three days of driving under various
conditions to set the codes again.
To check if they are set, turn the
ignition to ON (II), without starting
the engine. The Malf unction
Indicator Lamp will come on f or 20
seconds. If it then goes of f , the
readiness codes are set. If it blinks 5
times, the readiness codes are not
set. If possible, do not take your
vehicle f or a state emissions test
until the readiness codes are set.
Refer to State Emissions Testing for
more inf ormation (see page ).
If the indicator comes on
while driving, it means one
of the engine’s emission
control systems may have a problem.
Even though you may f eel no
dif f erence in your vehicle’s
perf ormance, continued operation
may cause serious damage.
If you have recently ref ueled your
vehicle, the indicator coming on
could be a loose or missing f uel f ill
cap. Tighten the cap until it clicks at
least three times. Tightening the cap
will not turn the indicator turn of f
immediately; it takes at least three
days of normal driving. 205
Malf unct ion Indicat or L amp
T aking Care of t he Unexpect ed
Readiness Code
183
NOTICE:If you keep driving with the
Malf unction Indicator Lamp on, you
can damage your vehicle’s emission
controls and the engine. Those repairs
may not be covered by your vehicle’s
warranties.
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There are three popular types of
prof essional towing equipment.
The tow
truck uses two pivoting arms that go
under the tires (f ront or rear) and lif t
them of f the ground. The other two
tires remain on the ground. Release the parking brake.
Shif t the transmission to Neutral.
Release the parking brake.
Start the engine.
ShifttoD,thentoN.
Turn of f the engine.
If your vehicle needs to be towed,
call a prof essional towing service or,
organization. Never tow your vehicle
behind another vehicle with just a
rope or chain. It is very dangerous.
The operator
loads your vehicle on the back of a
truck. The tow
truck uses metal cables with hooks
on the ends. These hooks go around
parts of the f rame or suspension and
the cables lif t that end of the vehicle
of f the ground. Your vehicle’s sus-
pension and body can be seriously
damaged.
If your Honda cannot be transported
by f lat-bed, it should be towed by
wheel-lif t equipment with the f ront
wheels of f the ground. If , due to
damage, your vehicle must be towed
with the f ront wheels on the ground,
do the f ollowing:
5-speed Manual Transmission:
Automatic Transmission:
Emergency T owing
T aking Care of t he Unexpect ed
Wheel-lif t Equipment
Flat -bed Equipment Sling-t ype Equipment
T his is
an acceptable way to tow your
Honda. This is the best way to trans-
port your Honda. T his method of towing
is unacceptable.
190
NOTICE: Improper towing preparation
will damage the transmission. Follow
the above procedure exactly. If you
cannot shif t the transmission or start
the engine (automatic transmission),
your vehicle must be transported with
the f ront wheels of f the ground.
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The Vehicle Identif ication Number
(VIN) is the 17-digit number your
Honda dealer uses to register your
vehicle f or warranty purposes. It is
also necessary f or licensing and
insuring your vehicle. The easiest
placetofindtheVINisonaplate
fastened to the top of the dashboard.
Youcanseeitbylookingthrough
the windshield on the driver’s side. It
is also on the Certification label at-
tached to the driver’s doorjamb, and
is stamped on the engine com-
partment bulkhead. The VIN is also
provided in bar code on the
Certif ication label.
Your vehicle has several identif ying
numbers located in various places.
Identif ication Numbers
T echnical Inf ormation194
VEHICLE IDENTIFICATION NUMBER
CERTIFICATION LABEL
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The Engine Number is stamped into
the engine block.
The Transmission Number is on a
label on top of the transmission.
Identif ication Numbers
T echnical Inf ormation195
AUTOMATIC TRANSMISSION NUMBER
MANUAL TRANSMISSION
NUMBER
ENGINE NUMBER
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Specif ications
T echnical Inf ormation196
Dimensions
Weights
Engine Capacities
174.6 in (4,435 mm)
67.3 in (1,710 mm)
56.9 in (1,445 mm)
103.1 in (2,620 mm)
57.9 in (1,470 mm)
57.9 in (1,470 mm)
2.95 x 3.72 in (75.0 x 94.4 mm) 13.2 US gal (50
)
1.03 US gal (3.9
)
102 cu-in (1,668 cm
)
9.5 9.9 1.06 US gal (4.0
)
1.35 US gal (5.1
)
1.32 US gal (5.0)
3.4 US qt (3.2
)
3.7 US qt (3.5)
3.2 US qt (3.0)
3.5 US qt (3.3)
4.4 US qt (4.2)
1.6 US qt (1.5)
1.7 US qt (1.6)
2.9 US qt (2.7)
6.2 US qt (5.9)
2.6 US qt (2.5
)
4.8 US qt (4.5)
0.11 US gal (0.4
)
Including the coolant in the reserve tank and that remaining in the
engine.
Reserve tank capacity:
Excluding the oil remaining in the engine.
Length
Width
Height
Wheelbase
Track
Gross vehicle weight ratingType
BorexStroke
Displacement
Compression ratio
Spark plugs
Fuel tank
Engine
coolant
Engine oil Automatic
transmission
fluid
Water cooled 4-stroke
SOHC , SOHC VTEC
4-cylinder gasoline engine
See the certification label attached
to the driver’s doorjamb.
PZFR6F-11PKJ20CR-M11
NGK:
DENSO:
0.04 in (1.1 mm)
FrontRear
Approx.
1:2: DX, LX
EX, Canadian Si
DX, LX
EX, Canadian Si
1: 2: 3:4:
Spark Plug Gap: Change
ManualAutomatic
Total
ManualAutomatic
Change
Without filter
Total
ChangeTotal
ChangeTotal
U.S. Vehicles
Canada Vehicles
Manual trans-
mission fluid Including filter
Windshield
washer reservoir
12
12 3434
1 2
0
0.1 mm
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Î
ÎThe United States Clean Air Act
sets standards f or automobile
emissions. It also requires that
automobile manufacturers explain to
owners how their emissions controls
workandwhattodotomaintain
them. This section summarizes how
the emissions controls work.
Scheduled maintenance is on page . As gasoline evaporates in the f uel
tank, an evaporative emissions
control canister f illed with charcoal
adsorbs the vapor. It is stored in this
canister while the engine is of f . Af ter
the engine is started and warmed up,
the vapor is drawn into the engine
and burned during driving.
The Onboard Ref ueling Vapor
Recovery (ORVR) system captures
the f uel vapors during ref ueling. The
vapors are adsorbed in a canister
f illed with activated carbon. While
driving, the f uel vapors are drawn
into the engine and burned of f .
In Canada, Honda vehicles comply
with the Canadian Motor Vehicle
Saf ety Standards (CMVSS) f or
Emissions valid at the time they are
manuf actured.
The burning of gasoline in your
vehicle’s engine produces several by-
products. Some of these are carbon
monoxide (CO), oxides of nitrogen
(NOx) and hydrocarbons (HC).
Gasoline evaporating f rom the tank
also produces hydrocarbons. Con-
trolling the production of NOx, CO,
and HC is important to the environ-
ment. Under certain conditions of
sunlight and climate, NOx and HC
react to f orm photochemical ‘‘smog.’’
Carbon monoxide does not contri-
bute to smog creation, but it is a
poisonous gas.
Your vehicle has a Positive
Crankcase Ventilation System. This
keeps gasses that build up in the
engine’s crankcase f rom going into
the atmosphere. The Positive Crank-
case Ventilation valve routes themfrom the crankcase back to the
intake manif old. They are then
drawn into the engine and burned.
137
Emissions Cont rols
Crankcase Emissions Control
System Evaporative Emissions Control
System
Onboard Ref ueling Vapor
Recovery
The Clean Air Act
T echnical Inf ormation202
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The exhaust emissions controls
include three or f our systems: PGM-
FI, Ignition Timing Control, Exhaust
Gas Recirculation (SOHC VTEC
engine only), and Three Way
Catalytic Converter. These three or
f our systems work together to
control the engine’s combustion and
minimize the amount of HC, CO, and
NOx that comes out the tailpipe. The
exhaust emissions control systems
are separate from the crankcase and
evaporative emissions control
systems.
The PGM-FI System uses sequential
multiport f uel injection.
It has three subsystems: Air Intake,
Engine Control, and Fuel Control.
The Engine Control Module (ECM)
or the Powertrain Control Module
(PCM) uses various sensors to
determine how much air is going
into the engine. It then controls howmuch f uel to inject under all operat-
ing conditions.
This system constantly adjusts the
ignition timing, reducing the amount
of HC, CO, and NOx produced.
The Exhaust Gas Recirculation
(EGR) system takes some of the
exhaust gas and routes it back into
the intake manif old. Adding exhaust
gas to the air/f uel mixture reduces
the amount of NOx produced when
the f uel is burned.
The three way catalytic converter is
in the exhaust system. Through
chemical reactions, it converts HC,
CO, and NOx in the engine’s exhaust
to carbon dioxide (CO ), nitrogen
(N ), and water vapor.
The emissions control systems are
designed and certif ied to work to-
gether in reducing emissions to
levels that comply with the Clean Air
Act. To make sure the emissions
remain low, you should use only new
genuine Honda replacement parts or
their equivalent f or repairs. Using
lowerqualitypartsmayincreasethe
emissions f rom your vehicle.
The emissions control systems are
covered by warranties separate f rom
the rest of your vehicle. Read your
warranty manual f or more inf orma-
tion.
2
2
Emissions Cont rols
T echnical Inf ormation
Exhaust Emissions Controls Replacement Parts
PGM-FI Syst emIgnit ion T iming Cont rol Syst em
Exhaust Gas Recirculat ion (EGR)Syst em
Three Way Catalytic Converter
203
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The three way catalytic converter
contains precious metals that serve
as catalysts, promoting chemical
reactions to convert the exhaust
gasses without af f ecting the metals.
The catalytic converter is ref erred to
as a three-way catalyst, since it acts
on HC, CO, and NOx. A replacement
unit must be an original Honda part
or its equivalent.Always use unleaded gasoline.
Even a small amount of leaded
gasoline can contaminate the
catalyst metals, making the three
way catalytic converter inef f ective.Keep the engine tuned-up.
The three way catalytic converter
must operate at a high temperature
for the chemical reactions to take
place. It can set on f ire any com-
bustible materials that come near it.
Parkyourvehicleawayfromhigh
grass, dry leaves, or other f lamma-
bles. A defective three way catalytic
converter contributes to air pollution,
and can impair your engine’s per-
f ormance. Follow these guidelines to
protect your vehicle’s three way
catalytic converter.
Have your vehicle diagnosed and
repaired if it is misf iring, back-
f iring, stalling, or otherwise not
running properly.
(DX, LX models)
(EX, Canadian Si models)
Three Way Catalytic Converter
T echnical Inf ormation204
THREE WAY CATALYTIC CONVERTER THREE WAY CATALYTIC CONVERTER
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Make sure the gas tank is nearly,
but not completely, f ull (around
3/4).
Make sure the ambient
temperature is between 20° and
95°F.Without touching the accelerator
pedal, start the engine and let it
idle f or 20 seconds.
If you take your vehicle f or a state
emissions test shortly af ter the
battery has been disconnected or
gone dead, it may not pass the test.
This is because of certain ‘‘readiness
codes’’ that must be set in the on-
board diagnostics f or the emissions
systems. These codes are erased
when the battery is disconnected,
and set again only after several days
of driving under a variety of
conditions. If the testing f acility determines that
the readiness codes are not set, you
will be requested to return at a later
date to complete the test. If you must
get the vehicle re-tested within the
next two or three days, you can
condition the vehicle for re-testing
by doing the f ollowing.
Make sure the vehicle has been
parked with the engine of f f or 8
hours or more. Keep the vehicle in Park
(automatic transmission) or
Neutral (manual transmission).
Increase the engine speed to 2,000
rpm and hold it there until the
temperature gauge rises to at least
1/4of thescale(approximately3
minutes).
St at e Emissions T est ing
T esting of Readiness Codes
T echnical Inf ormation205
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( % ) $
%."#)
This manual covers maintenance and recommended
procedures f or repair to engine and chassis components.
It is written f or the journeyman mechanic, but is simple
enough f or most mechanically-inclined owners to under-
stand.
This manual describes the procedures involved in the
replacement of damaged body parts.
This manual complements the Service Manual by
providing in-depth troubleshooting inf ormation f or each
electrical circuit in your vehicle.
Authorized Manuals
Service Manual:
Electrical T roubleshooting Manual:
Body Repair Manual:
212 NOTE: Dealers and Companies please provide dealer or company name,
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