Honda CR-V: 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 combustion and minimize
the amount of HC, CO, and NOx that
comes out the tailpipe. The exhaust
emissions control systems are
separate from the crankcase and
evaporative emissions control
systems.
PGM-FI System
The PGM-FI system uses sequential
multiport fuel injection.
It has three subsystems: air intake,
engine control, and fuel control. The
powertrain control module (PCM)
uses various sensors to determine
how much air is going into the
engine. It then controls how much
fuel to inject under all operating
conditions.
Ignition Timing Control System
This system constantly adjusts the
ignition timing, reducing the amount
of HC, CO, and NOx produced.
ThreeWay Catalytic Converter
The three way catalytic converter is
in the exhaust system. Through
chemical reactions, it converts HC,
CO, and NOx in the engine’s exhaust
to carbon dioxide (CO2), nitrogen
(N2), and water vapor.
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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
Testing of Readiness Codes
If you take your vehicle for an
emissions test shortly after the
battery has been disconnected or
gone dead, it may not pass the test.
This is because of certain ‘
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You can use any of five methods to
find radio stations on the selected
band: tune, seek, scan, the preset
buttons, and auto select.
TUNE - Use the TUNE bar to tune
the radio to a desired frequency.
Press the
side of the bar to tune
to a higher frequency, and press the
side to tune t
Transfer Assembly Inspection
1. Shift the transmission into the N position.
2. Raise the vehicle on a lift, and make sure it is
supported securely.
3. Make a reference mark (A) across the propeller
shaft (B) and the transfer companion flange (C).
4. Separate the propeller shaft from the transfer
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