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Home >> Cadillac >> 2021 >> CT4 Sport, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 189 (Data Communications - Diagnostic Information And Procedures (1 Of 3)) >> Diagnostic Information and Procedures >> DTC B1A25 >> Circuit/System Description

Circuit/System Description

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The Ethernet bus 7 is used to communicate between K56 Serial Data Gateway Module and P16 Instrument Panel Cluster Control Module. This Ethernet harness consists of a single twisted copper pair of wires (circuits 7216 & 7217) from point to point.

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