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Home >> Cadillac >> 2017 >> CTS Base, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 185 (Cellular System, Entertainment System And Navigation System) >> Diagnostic Information and Procedures >> DTC B1277: Microphone 1 Input Signal Circuit (except IO6 with CW1) >> Diagnostic Fault Information
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Diagnostic Fault Information

WARNING: This page is about a different car, the 2016 Cadillac CTS. 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
Microphone Signal B1277 02 B1277 04 B1277 04 -
Microphone Low Reference B1277 02 B1277 04 - -
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