2006 Acura TL Air intake

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The climate control system f or your
vehicle can also be operated using
the voice control system. See
NavigationsectioninyourQuick
Start Guide f or an overview of this
system and the Navigation System
manual f or complete details.
When the indicator in the button is
on, air f rom the vehicle’s interior is
recirculated throughout the system.
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
heating and cooling 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 ).
The driver’s side temperature and
passenger’s side temperature can be
set separately. Press either side’s
button to increase the temperature
of airf low. Press either side’s
button to decrease it. When you set
the temperature to its lower limit or
its upper limit, it will be displayed as
‘‘Lo’’ or ‘‘Hi’’.
This button turns the air
conditioning on and of f . The A/C
ON indicator comes on in the display
when the A/C is on.
Press the button to increase
the fan speed and airflow. Press the
button to decrease them.
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Only on models equipped withNavigation System
Airflow Buttons
Voice Control System Recirculation Button
Rear Window Def ogger Button
Temperature Control Buttons
Air Conditioning (A/C) Button
Fan Control Buttons
122

Theheadlightswereproperlyaimed
when your vehicle was new. If you
regularly carry heavy items in the
trunk, readjustment may be required.
Adjustment should be done by your
dealer or other qualif ied mechanic.
The headlight bulbs are a type of
high voltage discharge tube. High
voltage can remain in the circuit
even with the light switch off and the
key removed. Because of this, you
shouldnotattempttoexamineor
change a headlight bulb yourself . If a
headlight bulb f ails, take your
vehicle to a dealer to have it replaced.Remove the left or right side
engine compartment cover f rom
thesideyouareworkingonby
caref ully pulling the cover out.
If youarereplacingthebulbon
the driver’s side, remove the air
intake cover by removing the two
f astener pins and pulling the cover
out. Then remove the upper part
of the air intake duct by pulling it
straight up.
1.
CONT INUED
Replacing a Front Fog L ight or
Daytime Running L ight Bulb
Headlight A iming
Headlights
Lights
Maint enance
227

Insert the new bulb into the hole,
and turn it one-quarter turn clock-
wise to lock it in place.
Push the electrical connector back
onto the bulb. Make sure it is on
all the way.
Turn on the f og lights to test the
new bulb.
(Driver’s side)
Install the upper part of the air
intake duct.
(Driver’s side)
Install the engine compartment
corner cover, and secure it with
two fastener pins.
Install the engine compartment
side cover.
Remove the bulb by turning it one-
quarter turn counterclockwise. Remove the electrical connector
f rom the bulb by pushing on the
tab and pulling the connector
down. Start the engine. If you are
replacing a driver’s side bulb, turn
the steering wheel all the way to
theright.If youarereplacinga
passenger’s side bulb, turn the
steering wheel to the lef t. Turn of f
the engine.
4.
5.
6.
7.
8.
9.
2.
3. 1. Replacing the Front T urn Signal/
Parking L ight Bulb
Lights
228

Î
ε
µ 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.
In Canada, Acura vehicles comply
with the Canadian Motor Vehicle
Saf ety Standards (CMVSS) f or
Emissions valid at the time they are
manuf actured.
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 the
intake 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 .
Max Press The maximum air
pressurethetirecanhold.
Max Load The maximum load the
tire can carry at maximum air
pressure.
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. The Clean Air Act
Crankcase Emissions Control
System
Evaporative Emissions Control
System
Onboard Ref ueling Vapor
Recovery
Emissions Controls
Maximum T ire Pressure
Maximum T ire L oad
T ire L abeling, Emissions Controls
274

The exhaust emissions controls
include f our systems: PGM-FI,
ignition timing control, exhaust gas
recirculation, and three way catalytic
converter. These f our 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
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
qualitypartsmayincreasethe
emissions f rom 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.
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 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. This system constantly adjusts the
ignition timing, reducing the amount
of HC, CO, and NOx produced.
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.
2
2
Emissions Cont rols
Exhaust Emissions Controls Replacement Parts
PGM-FI System
Three Way Catalytic Converter
Exhaust Gas Recirculat ion (EGR)
Syst em
Ignit ion T iming Cont rol Syst em
Technical Inf ormation
275