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Home >> Cadillac >> 2017 >> CTS Base, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 43 (Cellular System, Entertainment System, And Navigation System - Sedan) >> Diagnostic Information and Procedures >> DTC B12A1: Audio Control Request Circuit >> Circuit/System Description

Circuit/System Description

WARNING: This page is about a different car, the 2015 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.

The Navigation Control Module plays events on the info display module. The Navigation Control Module sends a request to the radio via the audio request signal circuit. If the radio grants the request, the radio plays the audio through the speakers.

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