Power Control Unit (PCU): 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.
Courtesy of AMERICAN HONDA MOTOR CO., INC.