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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 U1100-U12FF >> Diagnostic Fault Information

Diagnostic Fault Information

WARNING: This page is about a different car, the 2022 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.
Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
B+ U1100-U12FF U1100-U12FF - -
Ignition U1100-U12FF U1100-U12FF - -
CAN 1 Serial Data [+] (circuit 4987) U0075* U1100-U12FF U0075* -
CAN 1 Serial Data [-] (circuit 4986) U0075* U1100-U12FF U0075* -
CAN 2 Serial Data [+] (circuit 4979) U0073* U1100-U12FF U0073* -
CAN 2 Serial Data [-] (circuit 4978) U0073* U1100-U12FF U0073* -
CAN 3 Serial Data [+] (circuit 4977) U0074* U1100-U12FF U0074* -
CAN 3 Serial Data [-] (circuit 4976) U0074* U1100-U12FF U0074* -
CAN 4 Serial Data [+] (circuit 4101) U0079* U1100-U12FF U0079* -
CAN 4 Serial Data [-] (circuit 4100) U0079* U1100-U12FF U0079* -
CAN 5 Serial Data [+] (circuit 4985) U007B* U1100-U12FF U007B* -
CAN 5 Serial Data [-] (circuit 4984) U007B* U1100-U12FF U007B* -
CAN 8 Serial Data [+] (circuit 4105) U007E* U1100-U12FF U007E* -
CAN 8 Serial Data [-] (circuit 4104) U007E* U1100-U12FF U007E* -
LIN Serial Data U1100-U12FF U1100-U12FF U1100-U12FF -
Ground - U1100-U12FF - -
* Other DTCs may set with this fault.