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.

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HOMESERVICE MANUALSCHEVROLET2006COBALT SS, 4D SEDAN, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 723 (IMA SYSTEM)SYSTEM DESCRIPTIONPOWER CONTROL UNIT (PCU)NOTES

2006 Chevrolet Cobalt SS, 4D Sedan, Standard

Power Control Unit (PCU): Notes

2006 Chevrolet Cobalt SS, 4D Sedan, StandardSECTION Notes

WARNING: This page is about a different car, the 2011 Honda Insight and 2010 Honda Insight. However, it is still accessible from the selected car via links, so may be relevant.

The PCU consists of the motor control module (MCM), the DC-DC converter, the motor power inverter (MPI) module, and the phase motor current sensor.

The MCM controls the IMA motor and monitors the condition of the battery module.

Fig 1: PCU System Diagram

Courtesy of AMERICAN HONDA MOTOR CO., INC.

RENDER: 1.0x

NO RELATED

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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.