Power Control Unit
WARNING: This page is about a different car, the 2010 Acura TL and 2009 Acura TL. However, it is still accessible from the selected car via links, so may be relevant.
The power control unit is located under left side of dash. The power control unit controls the power modes based upon signal from the engine start/stop switch, transmission range switch (A/T), park pin switch (A/T), brake pedal position switch (A/T), clutch pedal position switch A (M/T), and B-CAN.