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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 (IO6 with CW1) >> Conditions for Setting the DTC
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Conditions for Setting the DTC

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.

B1277 02 

The Navigation control module detects an short to ground in the cellular phone microphone high signal circuit.

B1277 04 

The following conditions will set this DTC:

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