The Idle Speed Control Motor (ISC) is a DC motor controlled by the onboard computer to move a pintle in and out to position the throttle for varying engine loads thereby maintaining correct idle speed. Common causes of Idle Speed Control Motor failure: • Wear and tear • Build-up of carbon, rust, or debris • Partial/complete jamming of the actuator
An Idle Speed Control Valve is a device to supply auxiliary air to the air intake pipe bypassing a throttle valve. It controls the idle speed to the target speed and stabilizes the engine speed by supplying auxiliary air when the engine is stated. The air conditioner is switched on or the electric load is switched on.

This chapter discusses engine idle-speed control. The engine speed at idle is maintained at a desired value despite changes in engine loads (e.g., due to accessories such as an air-conditioning compressor). The controlled variable is engine idle speed and it is measured as discussed previously.

Idle speed control adalah bagian dari sistem Electronic Fuel Injection yang fungsinya mengatur putaran mesin, kenali lebih lanjut di sini.
Last Updated on Mon, 04 Dec 2023 | Toyota Engine Control. The idle speed control program is based on an ECU stored look up table which lists pintle step positions in relation to specific engine rpm values. Over time, engine wear and other variations tend to change these relationships.
The idle air control valve, commonly referred to as the "idle speed control valve," manages how quickly your engine idles. The computer in the engine is in charge of this. Your car may occasionally stall or idle abnormally due to faulty parts.
Secara umum ISC merupakan rangkaian elektronik yang fungsi utamanya adalah mengatur jumlah udara yang akan melalui idle port pada saat katup gas posisinya tertutup. Hal ini berbanding terbalik dengan komponen seperti IMAS dan ISAS terdahulu di mana pengemudi harus mengatur putaran idle di mesin secara manual. HWfIH.
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  • what is idle speed control