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Diagnostic Test

  1. CHECK FOR AN INTERNAL TRANSMISSION PROBLEM 
    1. This DTC is an informational DTC.
    2. Check for any Service Information Tune-ups or Technical Service Bulletins that may apply.
    3. This is usually a sign of Torque Converter Clutch failure or an internal transmission problem.
    4. Check the Engine and Transmission Cooling Systems for proper operation.

      View repair.

      Repair 

      • Repair internal Transmission, Torque Converter, and/or Transmission and Engine Cooling systems as necessary in accordance to the Service Information.
      • Refer to STANDARD PROCEDURE  and perform the NAG1 TRANSMISSION VERIFICATION TEST.
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