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Jeep
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2013
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Compass Limited, AWD, Trans Mfr CD CVT2
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Repair and Diagnosis
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Transmission
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Transmission Control Systems
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(Transmission Control Module (TCM) - Electrical Diagnostics - Continuously Variable Transmission (CVT))
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DTC Troubleshooting
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U0121-Lost Communication With Antilock Brake Module
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Set Condition
Set Condition
A loss of CAN Bus communication between the TCM and ABS for the period of 2.0 seconds.