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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 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

 ThreeWay Catalytic Converter

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

 Emissions Testing

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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 Power switch will not turn ON (No information display and no sound) (with navigation)

1. With the ignition switch ON (II), push the power switch ON to see if navigation unit turns ON. Does the navigation unit display operate properly, and does the audio sound normal? YES-Intermittent failure, the system is OK at this time. NO-Go to step 2. 2. Turn the ignition switch OFF. 3. Che

 Resetting the Engine Oil Life Display

Your dealer will reset the display after completing the required maintenance service. You will see ‘‘OIL LIFE 100%’’ on the information display the next time you turn the ignition switch to the ON (II) position. If maintenance service is done by someone other than your dealer,

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