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Home >> Jeep >> 2011 >> Compass Base, 2.4 B, AWD, Automatic CVT, CVT3 >> Repair and Diagnosis >> Transmission >> Transmission Control Systems >> (Transmission Control Module (TCM) - Electrical Diagnostics) >> DTC Troubleshooting >> U0121-Lost Communication With Antilock Brake Module >> When Monitored:
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

When Monitored:

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.