Idle Control System Diagram; Intake Air System Diagram - Honda S2000 Service Manual

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ldle Control System

The idle speed of the engine is controlled by the ldle Air Control (lAC) valve:

. After the engine starts, the IAC valve opens for a certain amount of time. The amount of air is increased to raise the

. When the engine coolant temperature is low, the IAC valve is opened to obtain the proper fast idle speed. The

amount of bypassed air is thus controlled in relation to engine coolant temperature.

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Intake Air System

This system supplies air for engine needs. A resonator in the air intake duct provides additional silencing as air is

drawn into the svstem.

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