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
SEE MORE:
VSA (Vehicle Stability Assist) System Components
Component Location Index
VSA MODULATOR-CONTROL UNIT
Removal and Installation
UNDER-HOOD FUSE/RELAY BOX
DATA LINK
CONNECTOR (DLC)
STEERING ANGLE SENSOR
Replacement
VSA OFF SWITCH
Test
RIGHT-REAR WHEEL SENSOR
Replacement
HUB BEARING UNIT
(MAGNETIC ENCODER)
Replace
Dual Pump System Function Test
Starting and accelerating in forward gears
(4WD mode)
NOTE: Do not test repeatedly or the fluid will overheat.
1. Lift up the vehicle so all four wheels are off the ground.
2. Make a mark (A) on either No.1 or No.2 propeller
shaft (B).
3. Start the engine, and let it run until it warms up (the
ra
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