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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 PGM-FI System

Component Location Index CAMSHAFT POSITION (CMP) SENSOR B (EXHAUST) OUTPUT SHAFT (COUNTERSHAFT) SPEED SENSOR POWERTRAIN CONTROL MODULE (PCM) ELECTRICAL LOAD DETECTOR (ELD) (bottom of fuse/relay box) A/F SENSOR (LAF) RELAY (RELAY SOCKET E) IGNITION CO

 Rear Bumper

Rear Bumper Removal/Installation NOTE: Have an assistant help you when removing and installing the rear bumper. Take care not to scratch the rear bumper and body. Put on gloves to protect your hands. 1. Remove the rear splash guard. 2. Remove the caps (A). Remove the bolts (B, C) and clips (D

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