Honda CR-V: 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 vapors are drawn
into the engine and burned off.
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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
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
The three way catalytic converter
contains precious metals that serve
as catalysts, promoting chemical
reactions to convert the exhaust
gasses without affecting the metals.
The catalytic conv
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Removal
1. Drain the engine coolant.
2. Remove the air cleaner housing.
3. Remove the harness holder (A) from the bracket,
then remove the harness holder bracket (B).
4. Remove the upper radiator hose (A), heater hose
(B), and water bypass hose (C).
5. Remove the air cleaner housing brackets.
6
MICU Control Functions Index
The MICU (built into the under-dash fuse/relay box) is one of the B-CAN
components. The MICU controls many
systems related to the body controller area network, and also works as a gateway
to diagnose the other B-CAN circuits
with the HDS.
Refer to each system circuit d
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