LEMON Manuals
: Even more car manuals for everyone: 1960-2025
Home
>>
Cadillac
>>
2017
>>
CTS Base, AWD
>>
Repair and Diagnosis
>>
Accessories & Equipment
>>
Entertainment Systems
>>
Cellular System, Entertainment System, And Navigation System - Diagnostic Information And Procedures
>>
Diagnostic Information and Procedures
>>
DTC B127C: Microphone 2 Input Signal Circuit
>>
Conditions for Running the DTC
April 5, 2026:
LEMON Manuals is launched!
Read the announcement.
Conditions for Running the DTC
The ignition must be in the RUN or ACC position/vehicle in Service Mode.
The system voltage is at least 9.5 V and no more than 15.5 V.
All the above conditions are present for greater than 5 s.