E.C.C. DESCRIPTION (Models with catalyzer) — Air-fuel Ratio Control (Cont'd)

GA13DS, GA14DS & GA16DS

This solenoid valve is opened or closed repeatedly every 65 msec. Under closed-loop control, the percentage of opening time and closing time is feedback controlled in E.C.U. by the signal from exhaust gas sensor. Under the open-loop control, the percentage of opening time and closing time is kept at the specified level according to condition of engine.

Air-fuel ratio solenoid valve: ON

Air-fuel ratio solenoid valve: OFF