Honda CR-V: 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 engine is started and warmed up, the vapor is drawn into the engine and burned during driving.

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 Onboard Refueling Vapor Recovery

The onboard refueling vapor recovery (ORVR) system captures the fuel vapors during refueling. The vapors are adsorbed in a canister filled with activated carbon. While driving, the fuel vapo

 Exhaust Emissions Controls

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 combusti

 Replacement Parts

The emissions control systems are designed and certified to work together in reducing emissions to levels that comply with the Clean Air Act. To make sure the emissions remain low, you shoul

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 Relay and Control Unit Locations

Engine Compartment VSA MODULATOR-CONTROL UNIT AUXILIARY UNDER-HOOD RELAY BOX POWER MIRROR DEFOGGER RELAY PCM RADIATOR FAN RELAY ELECTRONIC THROTTLE CONTROL SYSTEM (ETCS) CONTROL RELAY ELD UNIT PGM-FI MAIN RELAY 1 (FI MAIN) UNDER-HOOD FUSE/RELAY BOX FAN CONTROL RELAY BLOWER MOTOR RELAY

 Calculating Fuel Economy

Measuring Techniques Direct calculation is the recommended source of information about your actual fuel economy. Using frequency of fill-ups or taking fuel gauge readings are NOT accurate measures of fuel economy. Fuel economy may improve over the first several thousand miles (kilomet

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