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Home >> Jeep >> 2014 >> Compass Limited, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 10 ((Transmission Control Module (TCM) - Electrical Diagnostics - CVT Automatic Transmission)) >> DTC Troubleshooting >> U0121-Lost Communication With Antilock Brake Module >> When Monitored

When Monitored

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Ignition on in the run position with a system voltage between 9.0 and 16.0 volts.

IOD fuse is installed or vehicle odometer is over 80 kilometers (50 miles).

No CAN C BUS DTCs present.

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