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Home >> Chrysler >> 2011 >> 300 Base, Gas >> Repair and Diagnosis >> Transmission >> Transmission Control Systems >> (Transmission Control Module (TCM) - Electrical Diagnostics) >> DTC Troubleshooting >> U0121-Lost Communication With Anti-Lock Brake Module >> Diagnostic Test

Diagnostic Test

  1. VERIFY DTC IS ACTIVE 
    1. Turn the ignition on.
    2. With the scan tool, read active DTCs.

      Is this DTC active?

      Yes 

      • Refer to  DIAGNOSIS AND TESTING  and perform the U0141-Lost Communication with IPM diagnostic procedure.

      No 

      • Refer to  Diagnosis and Testing  and perform the Stored Lost Communication DTCs diagnostic procedure.
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