Sentra Hatchback Coupe L4-1597cc 1.6L SOHC (E16i) (1987)
Idle Speed Control Valve: Description and Operation
Idle speed control valve is a rotary solenoid valve.
It receives a pulse signal from E.C.U. which determines the position of slider, thereby varying bypass air quantity. Idle speed control valve has
additional functions below.
1. Idle-up after cold start (Air regulator)
2. Idle speed feedback control (A.A.C. valve)
3. Idle-up for air conditioner and power steering (F. I. C. D.)
4. Deceleration vacuum control (Dash pot, A.B. valve & Boost control valve)