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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 B2B15 >> Circuit/System Description

Circuit/System Description

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The K9 Body Control Module communicates with the K73 Telematic Control Module via serial data. This DTC indicates an internal fault in the K73 Telematic Control Module.

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