Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2012 Kia Optima L4-2.4L HybridFACTORY OEM SERVICE PROCEDURE
Electrical Diagrams
ECM Terminal And Input/Output signal
ECM Terminal Function
Connector [CHG-K]
Connector [CHG-A]
ECM Terminal Input/ Output signal
NOTE:
Engine related parameters will only have valid values when the engine is requested to run by the HPCU (HEV control module). When engine does not run values will be invalid.
Connector [CHG-K]
Connector [CHG-A]
Circuit Diagram
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.