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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 15 (Cellular, Entertainment, And Navigation - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC B1B2F >> Circuit/System Description

Circuit/System Description

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The Ethernet bus 4 is used to communicate Audio Video Bridge (AVB) data between K73 Telematic Control Module and A11 Radio. This Ethernet harness consists of a single twisted copper pair of wires (circuits 7210 & 7211) from point to point.

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