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
Drive Motor Control Module: Specifications
System Circuit Diagram
A high-capacity power module is applied to control 2 primary motors using high voltage. The power module is composed of a high-speed switching insulated gate bipolar transistor (IGBT) and a diode circuit. The high voltage battery capacity is about 270V, but to ensure stability and reliability the power module uses high capacity power with a maximum voltage of 650V.
MCU Terminal and Input/ Output signal
MCU Terminal Function
Connector (CHG34-S)
MCU terminal Input/Output signal
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.
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