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.The emissions control systems are
designed and certif ied 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 f or repairs. Using lower
qualitypartsmayincreasethe
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 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.
This system constantly adjusts the
ignition timing, reducing the amount
of HC, CO, and NOx produced.
2
2
Exhaust Emissions Controls Replacement PartsPGM-FI System
Three Way Catalytic Converter
Ignit ion T iming Cont rol Syst em
Emissions Cont rols
Technical Inf ormation
257
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2008 Element
CONT INUED
....................................
Accessories .147
ACCESSORY (Ignition Key
.......................................
Position) .79
..............
Accessory Power Sockets .98
....................
Additives, Engine Oil .194
.........
Advice f or Pregnant Women .18
.............................
Airbag (SRS) .11,24
...
Airbags, Additional Information .24
...
Additional Safety Precautions .36
.............................
Airbag Service .35
How the Passenger Airbag Of f
......................
Indicator Works .34
How the Side Airbag Of f ......................
Indicator Works .34
..
How the SRS Indicator Works .33
How Your Front Airbags
.........................................
Work .27
...
How Your Side Airbags Work .30
How Your Side Curtain Airbags
.........................................
Work .32
........................
SRS Components .24
..............
Air Conditioning System .102
.........................................
Usage .103
.......................
Air Pressure, Tires .213 ......................................
Alignment .250
......................................
Antif reeze .196
Anti-lock Brakes (ABS)
...............................
Indicator .61,168
...................................
Operation .167
..............
Anti-thef t, Audio System .131
.
Anti-thef t Steering Column Lock .79
......................
Armrests, Front Seat .84
................................
Audio System .107
...
Automatic Seat Belt Tensioners .22
.............
Automatic Speed Control .135
..............
Automatic Transmission .161
..........................
Capacity, Fluid .249
...............
Checking Fluid Level .198
.......................................
Shif ting .161
.
Shif t Lever Position Indicator .161
................
Shif t Lever Positions .161
....................
Shif t Lock Release .163
......................
Auxiliary Input Jack .125
Battery
Charging System ...........................
Indicator .60,235
............................
Jump Starting .231 ..............................
Maintenance .218
............................
Specif ications .250
..............................
Bef ore Driving .139
..................................
Belts, Seat .10,20
...........................
Beverage Holders .98
...................................
Body Panels .201
..................................
Booster Seats .52
Brakes
...........
Anti-lock System (ABS) .167
.............
Break-in, New Linings .140
....................
Bulb Replacement .207
...........................................
Fluid .200
.........................................
Parking .93
.................
System Indicator .60,237
........................
Wear Indicators .167
.............................
Braking System .166
.................
Break-in, New Vehicle .140
..
Brightness Control, Instruments .72
........................
Brights, Headlights .71
Index
A
B
INDEX
I
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