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Home >> Jeep >> 2009 >> Liberty Limited, 4WD, Part Time >> Repair and Diagnosis >> Transmission >> Transfer Case >> Final Drive Control Module (FDCM) - Electrical Diagnostics >> DTC Troubleshooting >> U0100-Lost Communication With ECM/Pcm >> Possible Causes
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Possible Causes

Possible Causes 
CAN C+ OR CAN C- BUS CIRCUITS OPEN OR SHORTED
DTCS RELATED TO BATTERY VOLTAGE, IGNITION, OR VIN MESSAGES
TIPM NOT CONFIGURED CORRECTLY
ECM/PCM POWER AND GROUND
ECM/PCM
IPM
MODULE THAT SET THIS DTC
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