honda Workshop Repair Guides

Honda Workshop Service and Repair Manuals

ABOUT US
PGM-FI Main Relay <--> [Main Relay (Computer/Fuel System)] > < Diagram Information and Instructions|Page 4403

Civic EX Sedan L4-1668cc 1.7L SOHC (VTEC) MFI (2001)

Page 1
background image

Idle Air Control Valve: Description and Operation

Idle Air Control (IAC) Valve

To maintain the proper idle speed, the IAC valve changes the amount of air bypassing the throttle body in response to an electrical signal from the 
ECM/PCM.

PGM-FI Main Relay <--> [Main Relay (Computer/Fuel System)] > < Diagram Information and Instructions|Page 4403