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Home >> Chrysler >> 2013 >> 300 SRT-8 Core >> Repair and Diagnosis >> Transmission >> Transmission Control Systems >> Transmission Control Module (TCM) - Electrical Diagnostics - Nag1 Automatic Transmission >> DTC Troubleshooting >> U0121-Lost Communication With Anti-Lock Brake Module >> When Monitored

When Monitored

Continuously when the ignition is on.

The battery voltage between 10.0 and 16.0 Volts.

Body Control Module (BCM) is configured correctly.