Idle Switch
- Ensure switch is adjusted correctly. See ON-VEHICLE ADJUSTMENTS article. Disconnect idle switch connector. Check for continuity between terminal No. 1 (Yellow/Green wire) and ground. With accelerator pedal released, continuity should exist. With accelerator depressed, continuity should not exist. If continuity is not as specified, replace idle switch.
- Measure power supply voltage from ECM to idle switch. Turn ignition on. Using DVOM, measure voltage between idle switch harness connector terminal No. 1 (Yellow/Green wire) and vehicle ground. Voltage should be 4 volts or more. If voltage is not within specification, turn ignition off. Inspect and repair circuit as needed.
Courtesy of HYUNDAI MOTOR CO.