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 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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 General Troubleshooting Information

System Indicator This system has four indicators: ABS indicator (A) Brake system indicator (B) VSA indicator (C) VSA activation indicator (D) When the system detects a problem, it will turn the appropriate indicators on. Depending on the failure, the VSA modulator-control unit determines whic

 Using Automatic Climate Control

The automatic climate control system in your vehicle maintains the interior temperature you select. The system also adjusts the fan speed and airflow levels. 1. Press the AUTO button. 2. Set the desired temperature by turning the driver’s side temperature control dial. You will see

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