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Turn the ignition switch to the LOCK (0) position. Make sure the headlights and all other accessories are off.


2.


On the under-hood and passenger’s side interior fuse boxes, remove the cover from each fuse box.


FUSE


BLOWN


BLOWN


Fuses


3.


Check each of the large fuses in the under-hood fuse box by looking at the wire inside. Removing these fuses requires a Phillips-head screwdriver.


Also check the combined fuse box in the under-hood fuse box.


CONTINUED


359


2010 Accord Coupe 09/06/25 20:29:22 31TE0620_365


Fuses


BLOWN


FUSE PULLER


4.


Check the smaller fuses in the under-hood fuse box and all the fuses in the interior fuse boxes by pulling out each one with the fuse puller provided on the back of the under-hood fuse box cover.


5.


Look for a blown wire inside the fuse. If it is blown, replace it with one of the spare fuses of the same rating or lower.


FUSE PULLER


SPARE FUSES


Your vehicle has spare fuses on the back of the under-hood fuse box cover.


360


2010 Accord Coupe 09/06/25 20:29:28 31TE0620_366


If you cannot drive the vehicle without fixing the problem, and you do not have a spare fuse, take a fuse of the same rating or a lower rating from one of the other circuits. Make sure you can do without that circuit temporarily (such as the accessory power socket).


If you replace the blown fuse with a spare fuse that has a lower rating, it might blow out again. This does not indicate that anything is wrong. Replace the fuse with one of the correct rating as soon as you can.


Replacing a f use with one that has a higher rating greatly increases the chances of damaging the electrical system. If you do not have a replacement f use with the proper rating f or the circuit, install one with a lower rating.


6.


If the replacement fuse of the same rating blows in a short time, there is probably a serious electrical problem with your vehicle. Leave the blown fuse in that circuit, and have your vehicle checked by a qualified technician.


Fuses


361


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Fuse Locations


UNDER-HOOD FUSE BOX




Amps. 100 A 120 A 40 A − 40 A 30 A (40 A)



Circuits Protected


Battery Battery Passenger’s Side Fuse Box Not Used ABS/VSA ABS/VSA Motor Passenger’s Side Fuse Box Not Used


No.


− − − − −


362




No. − − 10
11
12
13
14
15
16
17
18
19
19
20
21




Amps. (40 A) 50 A 40 A 20 A − − − 40 A 15 A 20 A − − 15 A 15 A 10 A 7.5 A 15 A 15 A − 7.5 A 7.5 A 7.5 A


Circuits Protected


Driver’s Side Fuse Box IG Main Rear Defroster Sub Fan Motor Not Used Not Used Not Used Heater Motor Hazard Horn, Stop Not Used Not Used IG Coil FI Sub Back Up Interior Lights FI Main DBW Not Used Back Up, FI ECU MG Clutch Fan Relay


* *


1 : 2 :


4-cylinder models V6 models


Amps.


− − 30 A 30 A 30 A 30 A (60 A) 30 A


Circuits Protected


Not Used Not Used Sub Fan Motor Wiper Motor Main Fan Motor Driver’s Side Light Main Driver’s Side Fuse Box Passenger’s Side Light Main




No. − − − − − − − −


2010 Accord Coupe 09/06/25 20:29:49 31TE0620_368


INTERIOR FUSE BOX (Driver’s Side)


No.


Amps.


− − 15 A 7.5 A 7.5 A 7.5 A 15 A (7.5 A)


Circuits Protected


Not Used Not Used Washer Wiper Meter ABS/VSA ACG STS



No. 10
11
12


13
14
15


Amps. 20 A (10 A) 10 A 7.5 A



(10 A) 7.5 A


Circuits Protected



Fuel Pump VB SOL SRS ODS (Occupant Detection System) Not Used ACM Daytime Running Lights



Fuse Locations


Circuits Protected





A/C Accessory, Key, Lock Accessory Driver’s Power Seat Sliding Moonroof Driver’s Power Seat Reclining (Not Used) Front Accessory Power Socket Driver’s Power Window Driver’s Side Door Lock Left Front Fog Light Left Side Small Lights (Exterior) Left Headlight High Beam TPMS Left Headlight Low Beam Not Used



No. 16
17
18
19
20
21
22
23
24
25
26
27


28
29
30
31


Amps. 7.5 A 7.5 A 7.5 A (20 A) (20 A) (20 A) (20 A) 15 A 20 A 10 A (10 A) 10 A


10 A 7.5 A 10 A −



If equipped


363


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Fuse Locations


INTERIOR FUSE BOX (Passenger’s Side)


Circuits Protected



Not Used Not Used Lumbar Support Seat Heater Not Used Not Used Not Used



No. 16
17
18
19
20
21
22


Amps.


− −


(10 A) (15 A)


− − −



If equipped


No.


Amps. 10 A 10 A


(10 A) 10 A − 7.5 A −


(20 A)


Circuits Protected



Right Headlight High Beam Right Side Small Lights (Exterior) Right Front Fog Light Right Headlight Low Beam Not Used Interior Lights Not Used Not Used


No. 10
11
12


13


14
15


Amps. (20 A) 10 A (20 A) 15 A


20 A



(20 A)


Circuits Protected


Not Used Right Side Door Lock Not Used Rear Accessory Power Socket Front Passenger’s Power Window Not Used Premium AMP



364


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If your vehicle needs to be towed, call a professional towing service or organization. Never tow your vehicle with just a rope or chain. It is very dangerous.


There are two ways to tow your vehicle:



Flat-bedEquipment loads your vehicle on the back of a truck. transport your vehicle.


This is the best way to


The operator



The tow


Wheel-liftEquipment truck uses two pivoting arms that go under the front tires and lift them off the ground. The rear tires remain on the ground. way to tow your vehicle.


This is an acceptable


If, due to damage, your vehicle must be towed with the front wheels on the ground, do this:


Manualtransmission:


Shift the transmission to neutral. Leave the ignition switch in the ACCESSORY (I) position so the steering wheel does not lock. Release the parking brake.


Automatictransmission:


Start the engine. Shift to D position and hold for 5
seconds, then to N. Turn off the engine. Leave the ignition switch in the ACCESSORY (I) position so the steering wheel does not lock. Release the parking brake.


Emergency Towing


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.


With the front wheels on the ground, do not tow the vehicle more than 50
miles (80 km), and keep the speed below 35 mph (55 km/h).


CONTINUED


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Emergency Towing


Trying to lif t or tow your vehicle by the bumpers will cause serious damage. The bumpers are not designed to support the vehicle’s weight.


The steering system can be damaged if the steering wheel is locked. Leave the ignition switch in the ACCESSORY (I) position, and make sure the steering wheel turns f reely bef ore you begin towing.


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Technical Information


The diagrams in this section give you the dimensions and capacities of your vehicle and the locations of the identification numbers. It also includes information you should know about your vehicle’s tires and emissions control systems.


Identification Numbers Specifications


(4-cylinder models)


................


. 368


..................


. 370


Specifications (V6 models)


...............................


. 372


DOT Tire Quality Grading


(U.S. Vehicles)


.......................... Tire Labeling ................................. Tire Pressure Monitoring System


(TPMS) Required Federal



. 374
. 376


Explanation


. 378
............................ Emissions Controls ....................... . 380
.. Three Way Catalytic Converter . 382
........................ . 383
Emissions Testing


367


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Identification Numbers


Your vehicle has several identifying numbers in various places.


The vehicle identification number (VIN) is the 17-digit number your dealer uses to register your vehicle for warranty purposes. It is also necessary for licensing and insuring your vehicle. The easiest place to find the VIN is on a plate fastened to the top of the dashboard. You can see it by looking through the windshield on the driver’s side. It is also on the certification label attached to the driver’s doorjamb, and is stamped on the engine compartment bulkhead. The VIN is also provided in bar code on the certification label.


368


VEHICLE IDENTIFICATION NUMBER (VIN)


CERTIFICATION LABEL


2010 Accord Coupe 09/06/25 20:30:36 31TE0620_374


The engine number is stamped on the front of the engine block.


The transmission number is on a label on top of the transmission.


4-cylinder models


ENGINE NUMBER


AUTOMATIC TRANSMISSION NUMBER


Identification Numbers


MANUAL TRANSMISSION NUMBER


V6 models


ENGINE NUMBER


MANUAL TRANSMISSION NUMBER


AUTOMATIC TRANSMISSION NUMBER


369


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Specifications (4-cylinder models)


Dimensions Length Width Height Wheelbase Track


Front/Rear


Weights Gross vehicle weight rating


190.9 in (4,849 mm) 72.7 in (1,848 mm) 56.3 in (1,432 mm) 107.9 in (2,740 mm) 62.2 in (1,580 mm)


See the certification label attached to the driver’s doorjamb.


Air Conditioning Refrigerant type Charge quantity Lubricant type


Engine Type


Bore x Stroke Displacement Compression ratio Spark plugs (U.S.)


ULEV PZEV Spark plugs (Canada)


370


HFC-134a (R-134a) −


14.1 15.9 oz (400 450 g)



Water cooled 4-stroke DOHC i-VTEC 4-cylinder


gasoline engine


3.43 x 3.9 in (87.0 x 99.0 mm)


144 cu-in (2,354 cm )


NGK: DENSO: NGK: NGK: DENSO:


10.5 : 1


ILZKR7B11S SXU22HCR11S DILZKR7A11GS ILZKR7B11S SXU22HCR11S


ND-OIL8


Engine oil


Change *


Including filter Without filter


Seating Capacities Total Front Rear


Capacities Fuel tank


Engine coolant


Change * Manual Automatic


Total


Manual Automatic


Total Change Total Change Total


U.S. Canada


Manual trans- mission fluid Automatic transmission fluid Windshield washer reservoir


Approx. 18.5 US gal (70.0 )


1.59 US gal (6.0 ) 1.56 US gal (5.9 )


1.90 US gal (7.2 ) 1.88 US gal (7.1 )


4.2 US qt (4.0 ) 4.0 US qt (3.8 ) 5.4 US qt (5.1 ) 2.0 US qt (1.9 ) 2.1 US qt (2.0 ) 2.6 US qt (2.5 ) 6.9 US qt (6.5 )


2.6 US qt (2.5 ) 4.8 US qt (4.5 )



1 :



2 :


Including the coolant in the reserve tank and that remaining in the engine Reserve tank capacity: 0.180 US gal (0.68 ) Excluding the oil remaining in the engine


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Lights Headlights


High Low


Front turn signal/parking lights Front side marker lights Rear turn signal lights Back-up lights Stop/taillights License plate lights High-mount brake light Ceiling light Spotlights Trunk light Vanity mirror lights


Battery Capacity


12 V 12 V 12 V 12 V 12 V 12 V 12 V 12 V 12 V 12 V 12 V 12 V 14 V


− − − − − − − − − − − − −


(Amber)


60 W (HB3) 55 W (H11) 24/2.2 CP 5 W 21 W 16 W 21/5 W 5 W 21 W 8 W 8 W 5 W 1.4 W


12 V 12 V 12 V 12 V


− − − −


38 AH/5 HR 47 AH/20 HR 52 AH/5 HR * 65 AH/20 HR




PZEV engine model, and Canadian models


Specifications (4-cylinder models)


Fuses Interior


Driver’s side


Passenger’s side


See page 363 or the fuse label attached on the side panel. See page 364 or the fuse label attached to the inside of the fuse box door. See page 362 or the fuse box cover.


Under-hood


Tires Size


Pressure


Alignment Toe-in


Camber


Caster


Front/Rear Spare Front/Rear Spare


P225/50R17 93V T135/80D16 101M


32 psi (220 kPa , 2.2 kgf/cm ) 60 psi (420 kPa , 4.2 kgf/cm )


Front Rear Front Rear Front


0.00 in (0.0 mm) 0.08 in (2.0 mm)


0° 1° − 3°48’


371


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Specifications (V6 models)


Dimensions Length Width Height Wheelbase Track


190.9 in (4,849 mm) 72.7 in (1,848 mm) 56.3 in (1,432 mm) 107.9 in (2,740 mm) 62.2 in (1,580 mm)


Front/Rear


Weights Gross vehicle weight rating


See the certification label attached to the driver’s doorjamb.


Air Conditioning Refrigerant type Charge quantity Lubricant type


Engine Type


Bore x Stroke Displacement Compression ratio Spark plugs (U.S.)


Automatic Manual


Spark plugs (Canada)



Manual transmission


372


HFC-134a (R-134a) −


14.1 15.9 oz (400 450 g)



ND-OIL8


Water cooled 4-stroke


SOHC i-VTEC (SOHC VTEC ) * 6-cylinder (V6) gasoline engine 3.50 x 3.66 in (89.0 x 93.0 mm)


212 cu-in (3,471 cm )


10.5 : 1
10.0 : 1
ILZKR7B11
SXU22HCR11
ILZKR7B11
SXU22HCR11


NGK: DENSO: NGK: DENSO:


Seating Capacities Total Front Rear


Capacities Fuel tank


Engine coolant Engine oil


Change * Total Change *


Including filter Without filter


Total Change Total


Change Total


U.S. Canada


Manual transmission fluid Automatic transmission fluid Windshield washer reservoir


Approx. 18.5 US gal (70.0 ) 1.74 US gal (6.6 ) 2.27 US gal (8.6 )


4.5 US qt (4.3 ) 4.2 US qt (4.0 ) 5.3 US qt (5.0 ) 2.2 US qt (2.1 ) 2.6 US qt (2.5 )


3.5 US qt (3.3 ) 7.9 US qt (7.5 )


2.6 US qt (2.5 ) 4.8 US qt (4.5 )



1 :



2 :


Including the coolant in the reserve tank and that remaining in the engine Reserve tank capacity: 0.180 US gal (0.68 ) Excluding the oil remaining in the engine


2010 Accord Coupe 09/07/08 18:29:58 31TE0620_378


Lights Headlights


High Low


Front turn signal/parking lights Front side marker lights Fog lights Rear turn signal lights Back-up lights Stop/taillights License plate lights High-mount brake light Ceiling light Spotlights Trunk light Vanity mirror lights


Battery Capacity


12 V 12 V 12 V 12 V 12 V 12 V 12 V 12 V 12 V 12 V 12 V 12 V 12 V 14 V


− − − − − − − − − − − − − −


(Amber)


(H11)


60 W (HB3) 55 W (H11) 24/2.2 CP 5 W 55 W 21 W 16 W 21/5 W 5 W 21 W 8 W 8 W 5 W 1.4 W


12 V 12 V


− −


72 AH/20 HR 60 AH/5 HR


Fuses Interior


Under-hood


Tires Size


Pressure


Alignment Toe-in


Camber


Caster


Specifications (V6 models)


Driver’s side


Passenger’s side


See page 363 or the fuse label attached on the side panel. See page 364 or the fuse label attached to the inside of the fuse box door. See page 362 or the fuse box cover.


Front/Rear Spare Front/Rear Spare


P235/45R18 94V T135/80D16 101M


32 psi (220 kPa , 2.2 kgf/cm ) 60 psi (420 kPa , 4.2 kgf/cm )


Front Rear Front Rear Front


0.00 in (0.0 mm) 0.08 in (2.0 mm)


0° 1° − 3°48’


373


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DOT Tire Quality Grading (U.S. Vehicles)


Treadwear The treadwear grade is a compara- tive rating based on the wear rate of the tire when tested under controlled conditions on a specified government test course. For example, a tire graded 150 would wear one and one- half (1 1/2) times as well on the government course as a tire graded 100. The relative performance of tires depends upon the actual condi- tions of their use, however, and may depart significantly from the norm due to variations in driving habits, service practices and differences in road characteristics and climate.


Traction The traction grades, from highest to lowest, are AA, A, B, and C. Those grades represent the tire’s ability to stop on wet pavement as measured under controlled conditions on specified government test surfaces of asphalt and concrete. A tire marked C may have poor traction performance.


Warning: The traction grade assigned to this tire is based on straight-ahead braking traction tests, and does not include acceleration, cornering, hydroplaning, or peak traction characteristics.


The tires on your vehicle meet all U.S. Federal Safety Requirements. All tires are also graded for treadwear, traction, and temperature performance according to Department of Transportation (DOT) standards. The following explains these gradings.


Uniform Tire Quality Grading Quality grades can be found where applicable on the tire sidewall between tread shoulder and maximum section width. For example:


Treadwear 200
Traction AA Temperature A


All passenger car tires must conform to Federal Safety Requirements in addition to these grades.


374


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Temperature The temperature grades are A (the highest), B, and C, representing the tire’s resistance to the generation of heat and its ability to dissipate heat when tested under controlled conditions on a specified indoor laboratory test wheel. Sustained high temperature can cause the material of the tire to degenerate and reduce tire life, and excessive temperature can lead to sudden tire failure. The grade C corresponds to a level of performance which all passenger car tires must meet under the Federal Motor Vehicle Safety Standard No. 109. Grades B and A represent higher levels of performance on the laboratory test wheel than the minimum required by law.


DOT Tire Quality Grading (U.S. Vehicles)


Warning: The temperature grade for this tire is established for a tire that is properly inflated and not overloaded. Excessive speed, underinflation, or excessive loading, either separately or in combination, can cause heat buildup and possible tire failure.


375


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Tire Labeling


The tires that came on your vehicle have a number of markings. Those you should be aware of are described below.


Tire Labeling Example


(1)


94



Load index (a numerical code associated with the maximum load the tire can carry).



Speed symbol (an alphabetical code indicating the maximum speed rating).


TireSize Whenever tires are replaced, they should be replaced with tires of the same size. Following is an example of tire size with an explanation of what each component means.


P235/45R18 94V



Vehicle type (P indicates passenger vehicle).


235



Tire width in millimeters.


45



Aspect ratio (the tire’s section height as a percentage of its width).


(4)


(1)



Tire construction code (R indicates radial).


18



Rim diameter in inches.


(3)


(2)


(1) Tire Size (2) (3) (4)


Tire Identification Number (TIN) Maximum Tire Pressure Maximum Tire Load


376


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TireIdentificationNumber(TIN) The tire identification number (TIN) is a group of numbers and letters that look like the following example. TIN is located on the sidewall of the tire.


DOT B97R FW6X 2202


DOT



This indicates that the tire meets all requirements of the U.S. Department of Transportation.


B97R



Manufacturer’s identification mark.


FW6X


2202




Tire type code.


Date of manufacture. Year Week


Glossary of Tire Terminology Cold Tire Pressure pressure when the vehicle has been parked for at least three hours or driven less than 1 mile (1.6 km).


The tire air




Load Rating Means the maximum load that a tire is rated to carry for a given inflation pressure.


Maximum Inflation Pressure The maximum tire air pressure that the tire can hold.



Maximum Load Rating Means the load rating for a tire at the maximum permissible inflation pressure for that tire.



Tire Labeling


Recommended Inflation Pressure The cold tire inflation pressure recommended by the manufacturer.



Treadwear Indicators (TWI) − Means the projections within the principal grooves designed to give a visual indication of the degrees of wear of the tread.


377


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Tire Pressure Monitoring System (TPMS)



Required Federal Explanation


Each tire, including the spare (if provided), should be checked monthly when cold and inflated to the inflation pressure recommended by the vehicle manufacturer on the vehicle placard or tire inflation pressure label.


(If your vehicle has tires of a different size than the size indicated on the vehicle placard or tire inflation pressure label, you should determine the proper tire inflation pressure for those tires.)


As an added safety feature, your vehicle has been equipped with a tire pressure monitoring system (TPMS) that illuminates a low tire pressure telltale


when one or more of your tires is significantly under-inflated.


Accordingly, when the low tire pressure telltale illuminates, you should stop and check your tires as soon as possible, and inflate them to the proper pressure.


Driving on a significantly under- inflated tire causes the tire to overheat and can lead to tire failure. Under-inflation also reduces fuel efficiency and tire tread life, and may affect the vehicle’s handling and stopping ability.


Please note that the TPMS is not a substitute for proper tire maintenance, and it is the driver’s responsibility to maintain correct tire pressure, even if under-inflation has not reached the level to trigger illumination of the TPMS low tire pressure telltale.


378


2010 Accord Coupe 09/06/25 20:33:05 31TE0620_384


Tire Pressure Monitoring System (TPMS)



Required Federal Explanation


Your vehicle has also been equipped with a TPMS malfunction indicator to indicate when the system is not operating properly. The TPMS malfunction indicator is provided by a separate telltale, which displays the symbol ‘‘TPMS’’ when illuminated.


Always check the TPMS malfunction telltale after replacing one or more tires or wheels on your vehicle to ensure that the replacement or alternate tires and wheels allow the TPMS to continue to function properly.


When the malfunction indicator is illuminated,


the system may not be able to detect or signal low tire pressure as intended.


TPMS malfunctions may occur for a variety of reasons, including the installation of replacement or alternate tires or wheels on the vehicle that prevent the TPMS from functioning properly.


379


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Emissions Controls


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 from the tank also produces hydrocarbons. Controlling the production of NOx, CO, and HC is important to the environment. Under certain conditions of sunlight and climate, NOx and HC react to form photochemical ‘‘smog.’’ Carbon monoxide does not contribute to smog creation, but it is a poisonous gas.


380



The Clean Air Act The United States Clean Air Act sets standards for automobile emissions. It also requires that automobile manufacturers explain to owners how their emissions controls work and what to do to maintain them. This section summarizes how the emissions controls work.



In Canada, Honda vehicles comply


with the Canadian emission requirements, as specified in an agreement with Environment Canada, at the time they are manufactured.


Crankcase Emissions Control System Your vehicle has a positive crankcase ventilation system. This keeps gasses that build up in the engine’s crankcase from going into the atmosphere. The positive crankcase ventilation valve routes them from the crankcase back to the


intake manifold. They are then drawn into the engine and burned.


Evaporative Emissions Control System As gasoline evaporates in the fuel tank, an evaporative emissions control canister filled with charcoal adsorbs the vapor. It is stored in this canister while the engine is off. After the engine is started and warmed up, the vapor is drawn into the engine and burned during driving.


Onboard Refueling Vapor Recovery The onboard refueling vapor recovery (ORVR) system captures the fuel vapors during refueling. The vapors are adsorbed in a canister filled with activated carbon. While driving, the fuel vapors are drawn into the engine and burned off.


2010 Accord Coupe 09/06/25 20:33:28 31TE0620_386


Emissions Controls


much air is going into the engine. It then controls how much fuel to inject under all operating conditions.


IgnitionTimingControlSystem This system constantly adjusts the ignition timing, reducing the amount of HC, CO, and NOx produced.


ExhaustGasRecirculation(EGR) System V6models 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.


Exhaust Emissions Controls The exhaust emissions controls include three or four systems: 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 from the crankcase and evaporative emissions control systems.


PGM-FISystem The PGM-FI system uses sequential multiport fuel injection. It has three subsystems: air intake, engine control, and fuel 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


ThreeWayCatalyticConverter 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.


Replacement Parts The emissions control systems are designed and certified 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 for repairs. Using lower quality parts may increase the emissions from your vehicle.


The emissions control systems are covered by warranties separate from the rest of your vehicle. Read your warranty manual for more informa- tion.


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Three Way Catalytic Converter


The three way catalytic converter contains precious metals that serve as catalysts, promoting chemical reactions to convert the exhaust gasses without affecting the metals. The catalytic converter is referred 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.


The three way catalytic converter must operate at a high temperature for the chemical reactions to take place. It can set on fire any combustible materials that come near it. Park your vehicle away from high grass, dry leaves, or other flammables.


382


THREE WAY CATALYTIC CONVERTERS 4-cylinder models A defective three way catalytic converter contributes to air pollution, and can impair your engine’s per- formance. Follow these guidelines to protect your vehicle’s three way catalytic converter.


THREE WAY CATALYTIC CONVERTERS V6 models Keep the engine well maintained.


Have your vehicle diagnosed and repaired if it is misfiring, back- firing, stalling, or otherwise not running properly.


Always use unleaded gasoline. Even a small amount of leaded gasoline can contaminate the catalyst metals, making the three way catalytic converter ineffective.


2010 Accord Coupe 09/06/25 20:33:49 31TE0620_388


Testing of Readiness Codes If you take your vehicle for an emissions test shortly after 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 for 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 facility 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 retested within the next two or three days, you can condition the vehicle for retesting by doing the following.


1.


2.


3.


Make sure the gas tank is nearly, but not completely, full (around 3/4).


Make sure the vehicle has been parked with the engine off for 6
hours or more.


Make sure the ambient temperature is between 40° and 95°F (4° and 35°C).


Emissions Testing


4.


5.


Without touching the accelerator pedal, start the engine, and let it idle for 20 seconds.


Keep the vehicle in Park (automatic) or neutral (manual). Increase the engine speed to 2,000
rpm, and hold it there until the temperature gauge rises to at least 1/4 of the scale (about 3 minutes).


6.


Without touching the accelerator pedal, let the engine idle for 20
seconds.


CONTINUED


383


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Emissions Testing


7.


Select a nearby lightly traveled major highway where you can maintain a speed of 50 to 60 mph (80 to 97 km/h) for at least 20
minutes. Drive on the highway in D (automatic) or 5th (manual). Do not use the cruise control. When traffic allows, drive for 90 seconds without moving the accelerator pedal. (Vehicle speed may vary slightly; this is okay.) If you cannot do this for a continuous 90
seconds because of traffic conditions, drive for at least 30
seconds, then repeat it two more times (for a total of 90 seconds).


8.


Then drive in city/suburban traffic for at least 10 minutes. When traffic conditions allow, let the vehicle coast for several seconds without using the accelerator pedal or the brake pedal.


9.


Make sure the vehicle has been parked with the engine off for 30
minutes.


If the testing facility determines the readiness codes are still not set, see your dealer.


384


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Warranty and Customer Relations


Customer Service Information . 386
Warranty Coverages . 387
Reporting Safety Defects


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(U.S. vehicles)


Authorized Manuals


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. 388
. 389


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