2002 toyota rav4, what is ACC on harness

The acc wire is the switched + on this diagram



2002 Toyota RAV4 Car Stereo Radio Wiring Diagram
Radio Constant 12V+ Wire: Blue/Yellow
Radio Ignition Switched 12V+ Wire: Gray
Radio Ground Wire: Brown
Radio Illumination Dimmer Wire: Green
Radio Antenna Trigger Wire: N/A
Radio Amplifier Trigger Wire: N/A
Front Speakers Size: N/A
Front Speakers Location: N/A
Left Front Speaker Wire (+): Pink
Left Front Speaker Wire (-): Purple
Right Front Speaker Wire (+): Light Green
Right Front Speaker Wire (-): Blue
Rear Speakers Size: N/A
Rear Speakers Location: N/A
Left Rear Speaker Wire (+): Black
Left Rear Speaker Wire (-): Yellow
Right Rear Speaker Wire (+): Red
Right Rear Speaker Wire (-): White

Hope this helps