Diagnostic Aids

The active noise cancellation system is designed to moderate particular frequencies of engine noise, not to create a noise-free vehicle cabin. The system is not designed to cancel any wind or road noise. The system is intended to cancel unwanted engine sound from 1000 to 4600 RPM. 

On the base 6 speaker system, the subwoofer is not used for reproducing audio. The subwoofer is used only for producing the cancellation tones for the active noise cancellation system.

On the uplevel speaker system, the subwoofer is used for both reproducing audio and the active noise cancellation system tones.