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Home >> GMC >> 2019 >> Terrain SL >> Repair and Diagnosis >> External Pages >> Different car >> Section 137 (Cellular System, Entertainment System, And Navigation System - Diagnostic Information And Procedures) >> Diagnostic Information And Procedures >> DTC B127C: Microphone 2 Input Signal Circuit (IOS/IOT/IOU) >> Diagnostic Fault Information

Diagnostic Fault Information

WARNING: This page is about a different car, the 2018 GMC Terrain and 2018 Chevrolet Equinox. 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
Signal B127C 02 B127C 04 B127C 04 -
Low Reference B127C 02 B127C 04 B127C 04 -
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