Honda CR-V: Emissions Controls
The burning of gasoline in your
vehicle’s engine produces several byproducts.
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 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
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
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 en
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Your vehicle is equipped with
LATCH (Lower Anchors and
Tethers for CHildren) at the rear
seats to secure a child seat in any
seating position: one in each outer
seating position, or one in the center.
The five lower anchors are located
between the seat-back and seat
bottom, and are to
Component Location Index
AIR CLEANER
RESONATOR
THROTTLE BODY
INTAKE AIR BYPASS CONTROL
THERMAL VALVE
Throttle Body Test
Carbon Accumulation Check
NOTE: If the malfunction indicator lamp (MIL) has been
reported on, check for diagnostic trouble codes (DTCs).
1. Connect the H
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