Home >> Jaguar >> 2017 >> XJR Base >> Repair and Diagnosis (Single Page) >> General Information >> DTC Index >> Diagnostic Trouble Code (DTC) Index DTC: Transfer Case Control Module (TCCM) -- XJ/X351 >> Diagnostic Trouble Code (DTC) Index DTC: Transfer Case Control Module (TCCM) >> Description And Operation >> Transfer Case Control Module (TCCM) >> U3007-13 Control Module Input Power "B" - Circuit open >> Possible Causes