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Home › Jaguar › 2014 › XJR Base › Repair and Diagnosis › General Information › DTC Index › Diagnostic Trouble Code (DTC) Index DTC: TELEMATIC Control Module (TCU) -- XJ/X351 › Diagnostic Trouble Code (DTC) Index DTC: Telematic Control Module (TCU) › Description And Operation › TELEMATIC Control Module (TCU) › B117A-01 Backup Microphone - General Electrical Failure › Possible Causes

Possible Causes

No sound detected by the telematics microphone
Telematics microphone circuit short circuit to the telematics speaker circuit