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Home >> Kia >> 2018 >> Optima EX >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (EGR Function Testing - KIA) >> EGR Function Testing - KIA >> Test 2 >> EGR Control Solenoid
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EGR Control Solenoid

WARNING: This page is about a different variant/trim than selected.
  1. Disconnect EGR solenoid valve 2-pin harness connector. Check resistance between EGR solenoid valve terminals. Resistance should be 30-34 ohms at 68°F (20°C). If resistance is not as specified, replace EGR solenoid valve. If resistance is as specified, go to next step.
  2. Using a fused jumper wire, connect battery voltage to terminal No. 1, energize EGR solenoid by grounding terminal No. 2. Listen for operational sound (click). If operational sound is heard, go to next step. If operational sound is not heard, replace EGR solenoid valve.
  3. Connect vacuum pump to port "A" of EGR solenoid valve. While EGR solenoid valve is operated by battery power, Apply vacuum. If vacuum is not held, EGR solenoid valve is operating properly. If vacuum is held, replace EGR solenoid valve.
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