LEMON Manuals
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Jeep
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2009
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Commander Overland, RWD
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Repair and Diagnosis (Single Page)
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Transmission
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Automatic Trans
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(Powertrain Control Module (Pcm) - Electrical Diagnostics - 545RFE Automatic Transmission)
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DTC Troubleshooting
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U0100-No Communication With The ECM/Pcm
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Possible Causes
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Possible Causes
Possible Causes
CAN BUS CIRCUITS OPEN OR SHORTED
DTCS RELATED TO BATTERY VOLTAGE, IGNITION, OR VIN MESSAGES
FRONT CONTROL MODULE POWER AND GROUND
FCM NOT CONFIGURED CORRECTLY
FRONT CONTROL MODULE (FCM)
MODULE THAT SET THIS DTC