2009 Honda Accord Coupe Owners Manual

Emergency Towing ).

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Charging System Indicator

If the charging system indicator comes on brightly when the engine is running, the battery is not being charged.

Immediately turn off all electrical accessories. Try not to use other electrically operated controls such as the power windows. Keep the engine running; starting the engine will discharge the battery rapidly.

Go to a service station or garage where you can get technical assistance.

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Malfunction Indicator Lamp

If the indicator comes on while driving, it means one

of the engine’s emissions control systems may have a problem. Even though you may feel no difference in your vehicle’s performance, it can reduce your fuel economy and cause increased emissions. Continued operation may cause serious damage.

If you have recently refueled your vehicle, the indicator coming on could be due to a loose or missing fuel fill cap. Tighten the cap until it clicks at least once. Tightening the cap will not turn the indicator off immediately; it takes several days of normal driving.

362

If the indicator comes on repeatedly, even though it may turn off as you continue driving, have your vehicle checked by your dealer as soon as possible.

If you keep driving with the malf unction indicator lamp on, you can damage your vehicle’s emissions controls and the engine. Those repairs may not be covered by your vehicle’s warranties.

If your vehicle has an automatic transmission, the malfunction indicator lamp may also come on with the ‘‘D’’ indicator.

Readiness Codes Your vehicle has certain ‘‘readiness codes’’ that are part of the on-board diagnostics for 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 the battery in your vehicle has been disconnected or gone dead, these codes may be erased. It can take several days of driving under various conditions to set the codes again.

To check if they are set, turn the ignition switch to the ON (II) position, without starting the engine. The malfunction indicator lamp will come on for 20 seconds. If it then goes off, the readiness codes are set. If it blinks five times, the readiness codes are not set. If possible, do not take your vehicle for an emissions test until the readiness codes are set. Emissions Testing Refer to more information (see page

for 389

).

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U.S.

Canada

The brake system indicator normally comes on when you turn the ignition switch to the ON (II) position and as a reminder to check the parking brake. It will stay on if you do not fully release the parking brake.

If the brake system indicator comes on while driving, the brake fluid level is probably low. Press lightly on the brake pedal to see if it feels normal. If it does, check the brake fluid level the next time you stop at a service station (see page

318

).

If the fluid level is low, take your vehicle to a dealer, and have the brake system inspected for leaks or worn brake pads.

Brake System Indicator

However, if the brake pedal does not feel normal, you should take immediate action. A problem in one part of the system’s dual circuit design will still give you braking at two wheels. You will feel the brake pedal go down much farther before the vehicle begins to slow down, and you will have to press harder on the pedal.

If you must drive the vehicle a short distance in this condition, drive slowly and carefully.

If the ABS indicator and the VSA system indicator come on with the brake system indicator, have your vehicle inspected by your dealer immediately.

Slow down by shifting to a lower gear, and pull to the side of the road when it is safe. Because of the long distance needed to stop, it is hazardous to drive the vehicle. You should have it towed and repaired as soon as possible (see Towing 371

Emergency ).

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Fuses

INTERIOR (Driver’s side)

INTERIOR (Passenger’s side)

UNDER-HOOD

NOTCH

FUSE BOX

FUSE LABEL

The vehicle’s fuses are contained in three fuse boxes.

The driver’s side interior fuse box is under the dashboard on the driver’s side. The fuse label is attached to the side panel.

The passenger’s side interior fuse box is on the lower passenger’s side panel. To remove the fuse box lid, put your finger in the notch on the lid, and pull it upward slightly, then pull it toward you and take it out of its hinges.

TAB

The under-hood fuse box is on the driver’s side. To open it, push the tabs as shown.

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370

and

Checking and Replacing Fuses If something electrical in your vehicle stops working, the first thing you should check for is a blown fuse. Determine from the chart on pages 368 369
the fuse box lid or the fuse label, which fuse or fuses control that component. Check those fuses first, but check all the fuses before deciding that a blown fuse is not the cause. Replace any blown fuses and check if the device works.

, or the diagram on

1.

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.

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Fuses

FUSE PULLER

BLOWN

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.

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Fuses

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 or radio).

If you replace the blown fuse with a spare fuse that has a lower rating, it might blow out again. This does not indicate anything 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.

If the radio fuse is removed, the audio system may disable itself. The next time you turn on the radio, you will see ‘‘ENTER CODE’’ in the frequency display. Use the preset buttons to enter the five-digit code (see page

200

).

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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. − − − − − − − −

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.

− − − − −

368

＊

＊

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 :

2.4 engine models V6 models

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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

＊

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

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

＊

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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

＊

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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:

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

Automatictransmission:

Start the engine. Press on the brake pedal. Move the shift lever through all its positions. Shift to D position for 5 seconds, then to N. Turn off the engine. Release the parking brake. Leave the ignition switch in the ACCESSORY (I) position so the steering wheel does not lock.

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).

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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

(2.4 engine models)

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

. 374

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

. 376

Specifications (V6 models)

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

. 378

DOT Tire Quality Grading

(U.S. Vehicles)

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

(TPMS) Required Federal

−

. 380
. 382

Explanation

. 384
............................ Emissions Controls ....................... . 386
.. Three Way Catalytic Converter . 388
........................ . 389
Emissions Testing

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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.

374

VEHICLE IDENTIFICATION NUMBER (VIN)

CERTIFICATION LABEL

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

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

2.4 engine models

ENGINE NUMBER

AUTOMATIC TRANSMISSION NUMBER

Identification Numbers

MANUAL TRANSMISSION NUMBER

V6 models

ENGINE NUMBER

MANUAL TRANSMISSION NUMBER

AUTOMATIC TRANSMISSION NUMBER

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Specifications (2.4 engine 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)

376

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 )

2.14 US gal (8.1 ) 2.11 US gal (8.0 )

4.4 US qt (4.2 ) 4.2 US qt (4.0 ) 5.6 US qt (5.3 ) 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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Specifications (2.4 engine models)

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 12 V

12 V 12 V 12 V 12 V 12 V 12 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 1.1 W

36 AH/5 HR 38 AH/5 HR 45 AH/20 HR 47 AH/20 HR 52 AH/5 HR ＊ 65 AH/20 HR

＊

＊

PZEV engine model, and Canadian models

Under-hood

Tires Size

Pressure

Alignment Toe-in

Camber

Caster

Fuses Interior

Driver’s side

Passenger’s side

See page 369 or the fuse label attached on the side panel. See page 370 or the fuse label attached to the inside of the fuse box door. See page 368 or the fuse box cover.

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’

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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

ULEV PZEV

Spark plugs (Canada)

Manual transmission

＊ 378

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
DILZKR7A11G ILZKR7B11
SXU22HCR11

NGK: DENSO: NGK: 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

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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 12 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 1.1 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 369 or the fuse label attached on the side panel. See page 370 or the fuse label attached to the inside of the fuse box door. See page 368 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’

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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.

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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.

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.

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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)

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

382

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).

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.

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FW6X

−

Tire type code.

2202

−

Date of manufacture. Year Week

MaximumTirePressure Max Press

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The maximum air pressure the tire can hold.

MaximumTireLoad Max Load

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The maximum load the tire can carry at maximum air pressure.

Tire Labeling

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Tire Pressure Monitoring System (TPMS)

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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.

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Tire Pressure Monitoring System (TPMS)

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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.

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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.

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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.

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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.

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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 (V6
models), and three way catalytic converter. These three or four 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

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