Part Three

Audio System Description


STEREO AMPLIFIER CONNECTOR B (18P)





Stereo Amplifier Connector B (18P)





XM Receiver Connector for Inputs and Outputs (with premium audio system)

4-Door





2-Door





XM RECEIVER CONNECTOR A (14P)





XM Receiver Connector A (14P)










XM RECEIVER CONNECTOR B (2P)





XM Receiver Connector B (2P)





USB Adapter Control Unit for Inputs and Outputs ('11 model with USB adapter)





USB ADAPTER CONTROL UNIT CONNECTOR A (14P)






USB Adapter Control Unit Connector A (14P)










USB ADAPTER CONTROL UNIT CONNECTOR B (5P)





USB Adapter Control Unit Connector B (5P)





Auxiliary Jack Assembly Connector for Inputs and Outputs

USB Adapter Holder/Auxiliary Jack Assembly





Auxiliary Jack Assembly





AUXILIARY JACK ASSEMBLY 5P CONNECTOR






Auxiliary Jack Assembly 5P Connector





Active Noise Cancellation Microphone Connector for Inputs and Outputs










FRONT HFL-NAVIGATION-ANC MICROPHONE 7P CONNECTOR or FRONT HFL-ANC MICROPHONE 7P CONNECTOR

NOTE: Refer to the navigation system section for front HFL-navigation-ANC/active sound control microphone 7P connector terminals No. 2, No. 3, No. 5, No. 6, and No. 7.






Front HFL-Navigation-ANC Microphone 7P Connector or Front HFL-ANC Microphone 7P Connector





FRONT ACTIVE NOISE CANCELLATION MICROPHONE 3P CONNECTOR





Front Active Noise Cancellation Microphone 3P Connector










REAR ACTIVE NOISE CANCELLATION MICROPHONE 3P CONNECTOR





Rear Active Noise Cancellation Microphone 3P Connector










Audio Disc Changer Connector for Inputs and Outputs (with navigation system)





AUDIO DISC CHANGER 14P CONNECTOR





Audio Disc Changer 14P Connector










Speaker Crossover Network Control Unit Connector for Inputs and Outputs (with premium audio system)





DRIVER'S DOOR SPEAKER CROSSOVER NETWORK CONTROL UNIT 8P CONNECTOR






Driver's Door Speaker Crossover Network Control Unit 8P Connector





FRONT PASSENGER'S DOOR SPEAKER CROSSOVER NETWORK CONTROL UNIT 8P CONNECTOR






Front Passenger's Door Speaker Crossover Network Control Unit 8P Connector





Audio-HVAC Subdisplay Unit Connector for Inputs and Outputs (with navigation system)





AUDIO-HVAC SUBDISPLAY UNIT 12P CONNECTOR






Audio-HVAC Subdisplay Unit 12P Connector





Audio-HVAC Display Unit Connector for Inputs and Outputs (without navigation system)





AUDIO-HVAC DISPLAY UNIT 12P CONNECTOR






Audio-HVAC Display Unit 12P Connector










Active Noise Cancellation (ANC) System

The audio system is equipped with the ANC circuit in the audio unit.

The ANC system works to cancel engine booming sound up to about 2,000 rpm. The audio unit receives the engine speed pulse (NEP) from the ECM/PCM and outputs a sine-wave sound through the audio speakers to cancel low-frequency noise from the engine. The ANC system also uses two microphones to detect and monitor low frequency noise in the passenger compartment. The microphones feed information back to the audio unit which adjusts the speaker output to reduce the noise. The ANC also receives input from the door open/close (INTR LT) signal from the MICU. Anytime a door is opened, the ANC system temporarily stops working.






Speed-Sensitive Volume Compensation (SVC)

The audio system is equipped with speed-sensitive volume compensation (SVC). The audio unit receives the vehicle speed pulse (VSP) from the ECM/PCM. The system processes the speed input and increases the audio system volume level as the vehicle speed increases to compensate for the various interior noises that occur at higher speeds. When the vehicle slows down, the volume returns to its normal level. The SVC has four settings: SVC OFF, SVC LOW, SVC MID and SVC HIGH that can be adjusted using the audio unit. The SVC comes from the factory with SVC MID set as the default (see the Owner's Manual for more information).

Muting Logic

The navigation system allows voice control for the audio, the XM, USB audio, and the CD player. The navigation system uses the GA-Net bus to communicate the voice control commands to the audio unit. When using the navigation TALK/BACK button, the audio is muted on all speakers and you hear navigation sound on the front channels. When using the navigation or route guidance (RG), the front speakers provides the navigation sound and the rear speakers continue to play the audio. For more information, see the navigation and HFL sections. The outline of the muting logic is shown in this table.