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Home >> Cadillac >> 2017 >> CT6 Plug-In >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Collision/Avoidance >> Object Detection System And Pedestrian Protection System - Diagnostic Information And Procedures >> Diagnostic Information and Procedures >> DTC B127B: Rearview Camera Input Signal Circuit Missing Reference (UVC) >> Diagnostic Fault Information

Diagnostic Fault Information

Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
Ignition B127B 2B, 1 B127B 2B, 1 - -
Backup Signal B127B 2B, 1 B127B 2B, 1 - -
Camera Module signal (+) B127B 2B, 3 B127B 2B, 1 B127B 2B, 2 -
Camera Module signal (-) B127B 2B, 3 B127B 2B, 1 B127B 2B, 1 -
Ground - B127B 2B, 1 - -
Shield - 3 - -
1. Rear Vision Camera Inoperative
2. Rear Vision Camera Image Always Displayed
3. Poor Quality Image