Hyundai Elantra CN7 Quiz

Idle Speed Control Actuator (ISA)

In this manual: Idle Speed Control Actuator (ISA)
Repair and Maintenance Manual for Hyundai Elantra — 0General Information — 0Engine - Mechanical (DOHC 1.8L/2.0L) — 0Engine - Mechanical (DOHC 1.6L) — 0Engine Electrical Equipment — 0Emission Control System — 0Fuel system — 0Clutch — 0Transmission — 0Wheel Drive Shaft and Axle — 0Suspension — 0Steering — 0
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СЕРВОПРИВОД РЕГУЛЯТОРА ОБОРОТОВ ХОЛОСТОГО ХОДА (ISA)
IDLE SPEED CONTROL ACTUATOR (ISA)

The idle speed control actuator is a motor with two windings, which are energized by separate control circuits of the engine control module. Depending on the pulse duty factor, the difference in magnetic forces of the two windings rotates the motor shaft through a certain angle, thereby changing the flow area of the bypass passage. The bypass passage is located in the throttle body parallel to the throttle bore, at the location where the idle speed control actuator is installed.


CIRCUIT DIAGRAM - IDLE SPEED CONTROL ACTUATOR (ISA)

TROUBLESHOOTING HINTS: An open or short circuit in the idle speed control actuator circuit may be detected immediately after the ignition is switched on.


INSPECTION USING HI-SCAN (PRO) TESTER

WIRING INSPECTION

ПРОВЕРКА СЕРВОПРИВОДА РЕГУЛЯТОРА ОБОРОТОВ ХОЛОСТОГО ХОДА ИЗМЕРЕНИЕ СОПРОТИВЛЕНИЯ

IDLE SPEED CONTROL ACTUATOR INSPECTION: RESISTANCE MEASUREMENT BETWEEN CONNECTOR TERMINALS (WINDING RESISTANCE)

1. Disconnect the idle speed control actuator connector.

2. Measure the resistance between the terminals.

Nominal value: Terminals 1 and 2: 10.5 - 14.0 Ω; Terminals 2 and 3: 10.0 - 12.5 Ω (at 20 °C). 3. Reconnect the idle speed control actuator connector securely.

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