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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Component Location Index
CONSOLE ACCESSORY
POWER SOCKET RELAY
CONSOLE ACCESSORY POWER SOCKET
FRONT ACCESSORY POWER SOCKET
UNDER-DASH
FUSE/RELAY BOX
FRONT ACCESSORY
POWER SOCKET RELAY
CARGO AREA ACCESSORY
POWER SOCKET RELAY
CARGO AREA ACCESSORY POWER SOCKET
Circuit Diagram
Front Ac
Start-up procedure and Diagnosis Menu
1. Turn the ignition switch to the ON (II) position.
Press and hold the Menu, the Map/Guide, and the
Cancel buttons. Keep them pressed for
approximately 3 seconds. The display screen then
goes directly to the Diagnostic Menu.
DIAGNOSTIC MENU SCREEN
2. After th
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