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Home >> Cadillac >> 2017 >> CT6 Plug-In >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> Data Communication System - DTC B1000 To DTC U1818 >> Diagnostic Information and Procedures >> DTC U0075: Control Module Communication Object Detection CAN Bus Off >> Diagnostic Fault Information

Diagnostic Fault Information

Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
Object High Speed GMLAN Serial Data (+) U0075 U0075, U0100-U02FF* U0075 -
Object High Speed GMLAN Serial Data (-) U0075 U0075, U0100-U02FF* U0075 -
Ground (Data Link Connector terminal 5) - 1 - -
* An open between the Data Link Connector (DLC) and the first splice/device will only affect the communication with the scan tool. The devices will still communicate. An open in only one object high speed GMLAN serial data circuit may allow degraded communication between the devices.
1. No communication with any object high speed GMLAN device.
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