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Home >> GMC >> 2017 >> Acadia SL >> Repair and Diagnosis >> External Pages >> Different car >> Section 189 (Cellular System, Entertainment System, And Navigation System - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC B12A7: Optical Media Drive Internal Electronic Failure/Optical Media Drive Build Variant Not Programmed >> Circuit/System Description

Circuit/System Description

WARNING: This page is about a different car, the 2017 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.

The Media Disc Player monitors itself for internal failures and reports its condition to the radio via serial data when in use.

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