Page 464 of 489

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.
Scheduled maintenance is on page
.
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.
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 .
390
The Clean Air Act
Crankcase Emissions Control
System Evaporative Emissions Control
System
Onboard Ref ueling Vapor
Recovery
Emissions Cont rols
460
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2008 MDX
Page 480 of 489

Locks.....
Anti-thef t Steering Column .129
............................
Fuel Fill Door .323
..................................
Glove Box .164
..................
Lockout Prevention .131
...............................
Power Door .130
..............................
Tailgate .131,132
........................
Low Coolant Level .326
.........................
Low Fuel Indicator .71
...
Low Oil Pressure Indicator .65,436
...
Lubricant Specif ications Chart .452
............
Luggage, Storing (cargo) .332
..................................
Maintenance .381
Owner’s Maintenance ...................................
Checks .389
........................................
Minder .383
..........................................
Saf ety .382
....................................
Schedule .390
.......
Malf unction Indicator Lamp .437
...........
Memory, Driving Position .157
.............................
Message Display .80
..........................
Message Indicator .69
...............................
Meters, Gauges .72 ........................
Mirrors, Adjusting .155
.................................
Modif ications .331
...............
Modif ying Your Vehicle .331
.......................................
Moonroof .152
.............
Multi-Inf ormation Display .73
...................
Neutral Gear Position .342
..................
New Vehicle Break-in .322
...................
NOTICE, Explanation of .i
...............
Numbers, Identif ication .450
...
Octane Requirement, Gasoline .322
.........................................
Odometer .75
...............................
Odometer, Trip .75
....................
Of f -Highway Driving .377
...................
Of f -Road Precautions .377
Oil
........................
Change, How to .394
......................
Change, When to .383
......................
Checking Engine .326
...............................
Lif e, Engine .383
..............
Pressure Indicator .65,436 Selecting Proper Viscosity
......................................
Chart .393
.........
ON (Ignition Key Position) .129
............................
Outside Mirrors .154
.....................
Outside Temperature .76
....................
Overheating, Engine .434
....
Owner’s Maintenance Checks .389
.........................
Oxygenated Fuels .322
............
Panel Brightness Control .123
........................
Park Gear Position .342
...........................................
Parking .350
...............................
Parking Brake .153
Parking Brake and Brake
.................
System Indicator .65,438
...............................
Parking Lights .118
..
Parking Over Things that Burn .350
....
Passenger Airbag Of f Indicator .34
.............................
PGM-FI System .461
..............
Power Seat Adjustments .140
...............
Power Socket Locations .162
............................
Power Windows .149
.........
Pregnancy, Using Seat Belts .18
Index
N
O P
M
VI
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2008 MDX
Page 481 of 489

Î
CONT INUED
.........
Protecting Adults and Teens .11
...
Additional Safety Precautions .19
.....
Advice f or Pregnant Women .18
........................
Protecting Children .37
.....................
General Guidelines .37
.......................
Protecting Inf ants .42
.......
Protecting Larger Children .54
.........
Protecting Small Children .43
Using Child Seats with
.....................................
Tethers .51
.............................
Using LATCH .47
..................................
Saf ety Belts .8,20
.........
Safety Defects, Reporting .468 .................................
Saf ety Features .7
...........................................
Airbags .9
..................................
Door Locks .11
..........................
Head Restraints .14
.................................
Seat Belts .8,15
...............
Seats & Seat-Backs .12,13
.............
Saf ety Labels, Location of .59
..............................
Saf ety Messages .iii
...............
Satellite Radio, XM .185,210
.....................................
Seat Belts .8,15
...............
Additional Information .20
Automatic Seat Belt
...............................
Tensioners .22
.....................................
Cleaning .409
......................
Lap/Shoulder Belt .21
................................
Maintenance .23
Reminder Light and
................................
Beeper .20,64
...................
System Components .20
...............
Use During Pregnancy .18
...
Wearing a Lap/Shoulder Belt .15
...................
Radiator Overheating .434
...
Radio/Disc Sound System .181,201
...........................
Readiness Codes .462
...............................
Rear A/C Unit .175
............
Rear Audio Control Panel .241
........
Rear Entertainment System .237
..
Rear Lights, Bulb Replacement .406
.
Rear View Camera and Monitor .320
..........................
Rear View Mirror .154
...............
Rear Window Def ogger .174
Rear Window Wiper and
.......................................
Washer .117 .............
Reclining the Seat Backs .140
.........
Reclining the Second Seats .144
.......................
Reminder Indicators .64
................
Remote Audio Controls .233
.................
Remote Control (RES) .242
.....................
Remote Transmitter .135
Replacement Inf ormation
................
Engine Oil and Filter .394
..........................................
Fuses .440
................................
Light Bulbs .403
....................................
Schedule .383
................................
Timing Belt .402
...........................................
Tires .418
.............................
Wiper Blades .411
Replacing Seat Belts Af ter a ............................................
Crash .23
...
Reserve Tank, Engine Coolant .326
...............................
Restraint, Child .37
..................
Reverse Gear Position .342
................................
Rotation, Tire .418
Index
INDEXS
R
VII
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2008 MDX