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Home >> Chevrolet >> 2018 >> Equinox L >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Accessories Control Systems >> Active Noise Cancellation System >> Diagnostic Information And Procedures >> DTC B126E, B126F, B127C, Or B127D: Microphone (2-5) Input Signal Circuit (IOR) >> Conditions for Running the DTC

Conditions for Running the DTC

The Radio performs a self diagnostic of the microphone circuits 16 seconds after initial power up, then periodically every 400 milliseconds thereafter.