Honda CR-V: Emissions Controls
Honda CR-V (2006–2011) Owner's Manual / Technical Information / 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.
- The Clean Air Act
- Crankcase Emissions Control System
- Evaporative Emissions Control System
- Onboard Refueling Vapor Recovery
- Exhaust Emissions Controls
- Replacement Parts
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The Clean Air Act
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
Crankcase Emissions Control System
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
Evaporative Emissions Control System
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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Important Safety Precautions
To eliminate potential hazards, read
the instructions before you begin,
and make sure you have the tools
and skills required.
Make sure your vehicle is parked
on level ground, the parking brake
is set, and the engine is off.
To clean parts, use a commercially
available degreaser or par
DLC Circuit Troubleshooting
NOTE: Make sure the HDS and the DLC cable of the
HDS is not defective.
1. Turn the ignition switch OFF.
2. Connect the HDS to the DLC.
NOTE: Make sure the HDS is properly connected to
the DLC.
3. Turn the ignition switch ON (II). and read the HDS.
Does the HDS identify the vehicle?
YES-Go to ste
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