Engine and Emission Control Parts Description (Cont'd)
EF & EC-213prose procedureGA16DE engine.
Idle Air Adjusting (I.A.A.) Unit
The I.A.A. unit is made up of the A.A.C. valve, F.I.C.D. solenoid valve and idle adjusting screw. It receives the signal from the E.C.U. and controls the idle speed at the preset value.
Fast Idle Control Device (F.I.C.D.) Solenoid Valve
The F.I.C.D. solenoid valve provides additional air when the air conditioner switch is turned on.
Auxiliary Air Control (A.A.C.) Valve
The E.C.U. actuates the A.A.C. valve by an ON/OFF pulse. The longer that ON duty is left on, the larger the amount of air that will flow through the A.A.C. valve.
Vehicle Speed Sensor
The vehicle speed sensor provides a vehicle speed signal to the E.C.U. The speed sensor consists of a reed switch, which is installed in the speedometer unit and transforms vehicle speed into a pulse signal.
Fuel Filter
The specially designed fuel filter has a metal case in order to withstand high fuel pressure.
Diagnostic Connector for CONSULT
The diagnostic connector for CONSULT is located behind the fuse box cover.