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Home >> Chrysler >> 2011 >> 300 C, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 828 (Integrated Center Stack Screen Module - Electrical Diagnostics - 1500) >> Diagnosis And Testing >> U0164-Lost Communication With HVAC Control >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2015 RAM 1500. However, it is still accessible from the selected car via links, so may be relevant.

VERIFY DTC IS ACTIVE 

  1. Turn the ignition on.
  2. With the scan tool, read the active DTCs.

    Does the scan tool display; U0164-LOST COMMUNICATION WITH HVAC CONTROL MODULE as Active?

    Yes 

    • Refer to  DTC INDEX - 1500  and perform the U0164-Lost Communication with HVAC Control Module.

    No 

    • Refer to  DIAGNOSIS AND TESTING  and perform the Stored Lost Communication DTCs diagnostic procedure.
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