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Home >> Jeep >> 2009 >> Compass Limited, ED3, FWD, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 ((All Wheel Drive (AWD) Module - Electrical Diagnostics)) >> DTC Troubleshooting >> U0100-Lost Communication With ECM/Pcm >> Possible Causes

Possible Causes

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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
TOTALLY INTEGRATED POWER MODULE (TIPM)
MODULE THAT SET THIS DTC