Page 166 of 366

This button turns the windshield
def rost on and of f .
When you push this button, air f lows
f rom the def roster vents at the base
of the windshield, and the system
automatically switches to fresh air
mode and turns on the A/C. When
the indicator in the button is on, the
passenger’s temperature cannot be
set separately f rom the driver’s.
When the indicator in the button is
on, air f rom the vehicle’s interior is
sent throughout the system again.
When the indicator is off, air is
brought in f rom the outside of the
vehicle (fresh air mode).
The outside air intakes f or the
climate control system are at the
base of the windshield. Keep this
area clear of leaves and other debris. Thesystemshouldbeleftinfresh
air mode under almost all conditions.
Keeping the system in recirculation
mode, particularly with the A/C of f ,
can cause the windows to fog up.
Switch to recirculation mode when
driving through dusty or smoky
conditions, then return to fresh air
mode.
This button turns the rear window
def ogger of f and on (see page).123
CONT INUED
Windshield Def roster Button
Rear Window Def ogger Button
Recirculation Button
Climat e Cont rol
Features
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Page 293 of 366
Open the hood. To change a bulb
on the driver’s side, undo the
three fasteners and remove the air
intake cover.Remove the electrical connector
f rom the bulb by pulling the
connector straight back.
Remove the rubber weather seal
by pulling on the tab.Unclip the end of the hold-down
wire f rom its slot. Pivot it out of
the way, and remove the bulb
socket.
Pull the burned out bulb straight
out of its socket.
Push the new bulb straight into
the socket until it bottoms.
Insert the socket back into the
headlight assembly. Make sure
the bulb is installed correctly by
looking through the headlight lens.
Pivot the hold-down wire back in
place, and clip the end into the slot.
Install the rubber weather seal
over the back of the headlight
assembly.Makesureitisright
side up; it is marked with an arrow.
1.
2.
3.6. 4.
5.
7.
Lights
292
FASTENER
AIR INTAKE COVER
HOLD-DOWN WIREBULB
CONNECTOR
RUBBER WEATHER SEAL
SOCKET
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Page 294 of 366
Open the hood.
Remove the socket from the
headlight assembly by turning it
one-quarter turn counterclockwise.Pull the bulb straight out of its
socket. Push the new bulb straight
into the socket until it bottoms.
Insert the socket back into the
headlight assembly. Turn it
clockwise to lock it in place.
Turn on the lights to test the new
bulb.
Turn on the headlights to test the
new bulb.
On the driver’s side, reinstall the
air intake cover. Reinstall the
three fasteners and secure them
by pushing on the heads until they
lock. Push the electrical connector onto
the socket. Make sure it is
connected securely.
3.
4.
5.
2. 1.
8.
9.
10.
Lights
Replacing the Turn Signal L ight
Bulb
Maint enance
293
SOCKET
BULB
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Page 345 of 366

Î
ÎThe 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. The 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.
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
crankcase ventilation valve routes
them from the crankcase back to theintake manif old. They are then
drawn into the engine and burned.
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, Acura vehicles comply
with the Canadian emission
requirements, as specif ied in an
agreement with Environment
Canada, at the time they are
manuf actured.
Emissions Cont rols
The Clean Air Act
Crankcase Emissions Control
System Evaporative Emissions Control
System
Onboard Ref ueling Vapor
Recovery
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The emissions control systems are
covered by warranties separate from
the rest of your vehicle. Read your
warranty manual for more informa-
tion. The emissions control systems are
designed and certif ied to work
together in reducing emissions to
levels that comply with the Clean Air
Act. To make sure the emissions
remain low, you should use only new
Acura replacement parts or their
equivalent f or repairs. Using lower
quality parts may increase the
emissions f rom your vehicle.
The exhaust emissions controls
include three systems: PGM-FI,
ignition timing control, and three
way catalytic converter. These three
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 f rom 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 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.
This system constantly adjusts the
ignition timing, reducing the amount
of HC, CO, and NOx produced.
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.2
2
Emissions Cont rols
Exhaust Emissions Controls Replacement Parts
PGM-FI SystemIgnit ion T iming Cont rol Syst em
Three Way Catalytic Converter
Technical Inf ormation
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