DTC P0506: IDLE CONTROL SYSTEM RPM LOWER THAN EXPECTED Kia Rio I рестайлинг

Note. Before performing any diagnostic test, refer toWARNINGS, CAUTIONS and NOTES in DIAGNOSTIC TESTS .

Note. Testing individual components does not isolate shorts or opens. Perform all voltage tests using a Digital Volt-Ohmmeter Meter (DVOM) with a minimum 10-megohm input impedance, unless stated otherwise in test procedure. Use ohmmeter to isolate wiring harness shorts or opens.

Diagnostic Aids

Malfunction code will set when engine actual idle speed is 120 RPM or more, lower than target idle speed for 10 seconds. Check for following possible problems

1. Open or short between Main relay and Idle Air Control (IAC) valve.
2. Open or short between Engine Control Module (ECM) and IAC valve.
3. Intake system is plugged.
4. Faulty IAC valve.