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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 191 (Data Communications - Diagnostic Information And Procedures (3 Of 3)) >> Diagnostic Information and Procedures >> DTC U2000-U20FF >> Circuit/System Description

Circuit/System Description

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The control module must be configured with LIN bus device ID information. If the control module was not properly configured with correct LIN bus device ID information after installation, it may set the appropriate communication DTCs. No external circuit diagnosis is involved.

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