Home >> Jaguar >> 2014 >> XK Base, 2D Convertible >> Repair and Diagnosis >> General Information >> DTC Index >> Diagnostic Trouble Code Index DTC: Audio Control Module (ACM) -- XK/X150 >> Diagnostic Trouble Code Index DTC: Audio Control Module (ACM) >> Description And Operation >> Audio Control Module [ACM] >> DTC B1D78-11: Auxiliary input - Circuit short to ground >> Possible Causes