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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 162 (Data Communications - Diagnostic Information And Procedures (2 Of 3)) >> Diagnostic Information and Procedures >> DTC U1623 >> Circuit/System Description

Circuit/System Description

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The K124 Image Processing Module has 2 processors. The Ethernet connection between 2 processors is internal to the module. If one processor loses communication with the other processor, the module will need to be replaced. No external circuit diagnosis is involved.