2011 HONDA ACCORD COUPE catalytic converter

This shows the temperature of the
engine’s coolant. During normal
operation, the pointer should rise
from the bottom mark to about the
middle of the gauge. In severe
driving conditions, such as very hot
weather or a long period of uphill
driving, the pointer may rise to the
upper zone. If it reaches the red
(hot) mark, pull saf ely to the side of
the road. Turn to page for
instructions and precautions on
checking the engine cooling system.This shows how much f uel you have.
It may show slightly more or less
than the actual amount. The needle
returns to the bottom after you turn
of f the ignition.
If your f uel f ill cap is loose or
missing, a ‘‘CHECK FUEL CAP’’
message appears on the information
display af ter you start the engine.
For more inf ormation, see page .
The inf ormation display in the
instrument panel shows you the
engine oil lif e and maintenance
service items when the ignition
switch is in the ON (II) position. This
inf ormation helps to keep you aware
of the periodic maintenance your
vehicle needs f or continued trouble-
f ree driving. Ref er to page f or
more inf ormation. 298
343 403
Gauges
Temperature Gauge
Fuel Gauge
Check Fuel Cap Message
Maintenance Minder
66
TM
Avoid driving with an extremely low
f uel level. Running out of f uel could
cause the engine to misf ire, damaging
the catalytic converter.
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2011 Accord Sedan

Always use the parking brake when
you park your vehicle. Make sure
the parking brake is set f irmly, or
your vehicle may roll if it is parked
on an incline.
If your vehicle has an automatic
transmission, set the parking brake
bef ore you put the transmission in
Park. This keeps the vehicle f rom
moving and putting pressure on the
parking mechanism in the
transmission.Make sure the moonroof (if
equipped) and the windows are
closed.
Turn of f the lights.
Place any packages, valuables, etc.,
in the trunk or take them with you.
Make sure the parking brake is
f ully released bef ore driving away.
Driving with the parking brake
partially set can overheat or
damage the rear brakes. If the vehicle is f acing uphill, turn
the front wheels away from the
curb. If your vehicle has a manual
transmission, put it in f irst gear.
If the vehicle is f acing downhill,
turn the front wheels toward the
curb. If your vehicle has a manual
transmission, put it in reverse gear.
Lock the doors.
Check the indicator on the
instrument panel to verif y that the
security system is set.
Never park over dry leaves, tall
grass, or other f lammable
materials. The hot three way
catalytic converter could cause
these materials to catch on fire.
Except LX
Parking T ips
Parking
Driving
325
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2011 Accord Sedan

µ
Thediagramsinthissectiongive
you the dimensions and capacities of
your vehicle and the locations of the
identif ication numbers. It also
includes inf ormation you should
know about your vehicle’s tires and
emissions control systems.
................
Identif ication Numbers . 418
Specif ications ..................
(4-cylinder models) . 420
Specif ications ...............................
(V6 models) .422
DOT Tire Quality Grading ..........................
(U.S. Vehicles) .424
.................................
Tire Labeling .426
Tire Pressure Monitoring System (TPMS) Required Federal ............................
Explanation .428
.......................
Emissions Controls .430
Three Way Catalytic .................................
Converters .432
........................
Emissions Testing .433
T echnical Inf ormation
Technical Inf ormation
417
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2011 Accord Sedan

The exhaust emissions controls
includethreeorfoursystems:
PGM-FI, ignition timing control,
exhaust gas recirculation (6-cylinder
models), and three way catalytic
converter. These systems work
together to control the engine’s
combustion and minimize the
amount of HC, CO, and NOx that
come out the tailpipe. The exhaust
emissions control systems are
separate f rom the crankcase and
evaporative emissions control
systems.The emissions control systems are
covered by warranties separate
from the rest of your vehicle.
Read your warranty manual for
more information. 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
Honda replacement parts or their
equivalent f or repairs. Using lower
qualitypartsmayincreasethe
emissions f rom your vehicle. 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 PGM-FI system uses sequential
multiport f uel injection. It has three
subsystems: air intake, engine
control, and f uel control. The
powertrain control module (PCM) in
automatic transmission vehicles or
the engine control module (ECM) in
manual transmission vehicles uses
various sensors to determine how much air is going into the engine. It
then controls how much f uel to inject
under all operating conditions.
The exhaust gas recirculation (EGR)
system takes some of the exhaust
gas and routes it back into the intake
manifold. Adding exhaust gas to the
air/fuel mixture reduces the amount
of NOx produced when the fuel is
burned. This system constantly adjusts the
ignition timing, reducing the amount
of HC, CO, and NOx produced.
2
2
V6 models
Exhaust Emissions Controls
Replacement Parts
Emissions Cont rols
Three Way Catalytic Converter
PGM-FI System Exhaust Gas Recirculat ion (EGR)
Syst em
Ignit ion T iming Cont rol Syst em
Technical Inf ormation
431
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2011 Accord Sedan

Keep the engine well maintained.
Have your vehicle diagnosed and
repaired if it is misf iring, back-
f iring, stalling, or otherwise not
running properly.
The three way catalytic converters
contain precious metals that serve as
catalysts, promoting chemical
reactions to convert the exhaust
gasses without af f ecting the metals.
The catalytic converters are ref erred
to as three-way catalysts, since they
act on HC, CO, and NOx.
Replacement units must be original
Honda parts or their equivalent.
The three way catalytic converters
must operate at a high temperature
for the chemical reactions to take
place. They can set on f ire any
combustible materials that come
near them. Park your vehicle away
f rom high grass, dry leaves, or other
f lammables.
Defectivethreewaycatalytic
converters contribute to air pollution,
and can impair your engine’s
perf ormance. Follow these
guidelines to protect your vehicle’s
three way catalytic converters.
Always use unleaded gasoline.
Even a small amount of leaded
gasoline can contaminate the
catalyst metals, making the three
way catalytic converters
inef f ective.
Three Way Catalytic Converters
432
4-cylinder models V6 models
THREE WAY CATALYTIC CONVERTERS
THREE WAY CATALYTIC CONVERTERS
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2011 Accord Sedan

........................
Shif t Lock Release .323
................................
Side Airbags .9 ,27
...
How Your Side Airbags Work . 27
How the Side Airbag Of f ......................
Indicator Works .30
..................
Side Curtain Airbags . 9,29
How Your Side Curtain ..........................
Airbags Work .29
...............................
Signaling Turns .69
.....................................
Snow Tires .386
................................
Sound System .136
Spare Tire ......................................
Inf lating .392
....................
Specif ications .421, 423
............................
Spark Plugs .420, 422
........................
Specif ications .420, 422
................................
Speed Control .263
........................
Speed Limiter .319, 323
...................................
Speedometer .63
..........
SRS, Additional Inf ormation . 21
...
Additional Safety Precautions . 32
.............................
Airbag Service .31
......
Airbag System Components . 21
How the Passenger Airbag Of f ......................
Indicator Works .30 How the Side Airbag Of f
......................
Indicator Works .30
..
How the SRS Indicator Works . 29
How Your Front Airbags .......................................
Works .23
.
How Your Side Airbags Works . 27
How Your Side Curtain Airbags .........................................
Work .29
.............................
SRS Indicator .29 ,57
....
START (Ignition Key Position) . 78
.......................
Starting the Engine .317
In Cold Weather at High ..................................
Altitude .317
................
With a Dead Battery . 400
........
Steam Coming f rom Engine . 403
Steering Wheel ................................
Adjustments .75
.............
Anti-theft Column Lock . 78
.......
Steering Wheel Buttons . 250,270
...................
Stereo Sound System . 136
......................................
Sun Visors .117
........................
Sunglasses Holder .116
Supplemental Restraint ..................................
System .9,21
......................................
Servicing .31
.........................
SRS Indicator .29 ,57 ...................
System Components . 21
..................................
Synthetic Oil .353
.
Taking Care of the Unexpected . 391
Technical Descriptions ......
DOT Tire Quality Grading . 424
.....
Emissions Control Systems . 430
Three Way Catalytic ...............................
Converter .432
.......................
Temperature Gauge .66
....................
Temperature, Outside . 65
..............
Tether Anchorage Points . 46
................
Thef t Protection, Radio . 253
..
Three Way Catalytic Converter . 432
..........................
Time, Setting the .254
....................................
Timing Belt .364
....................................
Tire Chains .386
.........
Tire, How to Change a Flat . 393
...........................
Tire Inf ormation .426
.................................
Tire Labeling .426
Index
T
VIII
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2011 Accord Sedan