Toyota ISCV Idling Speed Control Valve

Toyota ISCV (Idle Speed Control Valve)
ISCV adjust the volume of air flowing through the bypass channel provided in
thethrottle valve, to continue to control the idling speed at an optimum level.
1.ISCV
2.Throttle body
3.Throttle valve
4.Bypass

ISCV (Idle Speed Control Valve)

Types ISCV

1.Rotor 2.Magnet 3. Valve 4. Bimetal 5. coil

A.This type of step motor

These valves regulate air volume flowing through the bypass channel. 

This is achieved by a valve located at the tip of the rotor, which is driven back and forth by the movement of the rotor. 

B.Type rotary solenoid valve

These valves regulate the volume of air suction valve opening distinguishingmanner. This is

achieved by regulating the voltage applied to the second solenoid(coil-coil).

The problem that occurs when damaged ISCV

1.When cold the engine rpm will not rise or lower position, the

standard 1000 rpm new machine is turned up to 1300 rpm.

2. Rpm when the engine is hot will not go down or high position, the

standard engineis already hot without air conditioning on rpm 800 rpm or less with

the AC on 1000 rpm.

Source : http://toyotagroup.blogspot.com/2011/12/iscv-idle-speed-control-valve.html