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Home >> Chrysler >> 2009 >> 300 Signature Series >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 7 ((Powertrain Control Module (Pcm) - Electrical Diagnostics - 42RLE)) >> DTC Troubleshooting >> U0121 Lost Communication With Abs >> Theory Of Operation

Theory Of Operation

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The NGC controller communicates over the CAN C BUS. The transmission controller continuously monitors BUS activity. The CAN C BUS is also used to communicate transmission MIL status to the Engine Controller. If the Engine Controller is unable to communicate with the Transmission Controller, a DTC will set and the Engine Controller will illuminate the MIL.

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