AUDIO UNIT CONSTRUCTION/OPERATION

• The audio unit is composed of the base unit, upper module, and lower module.

• Upper and lower module availability depends on vehicle grade.

Terminal Layout and Signal

• (See CENTER PANEL MODULE CONSTRUCTION.)

Base Unit

• The base unit controls the AM/FM tuner and upper/lower modules.

Auto Level Control (ALC) Function (Standard Specification Vehicle)

Function

• Adjusts the audio volume so that the sound is balanced against wind and road noise while driving.

Operation

• The audio unit changes the volume automatically based on the vehicle speed signal sent from the DSC HU/CM.

• The ALC function is divided into four modes that can be used effectively to match the driving conditions.