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Home >> Chrysler >> 2011 >> 300 C, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 237 (DTCS P1D94 To U1479 - 8HP70 Automatic Transmission - 1500) >> Diagnosis And Testing >> P1DF3-Ecu Not Initialized >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2013 RAM 1500. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK FOR TCM CAN BUS DTCS 
    1. With the scan tool, read TCM DTCs.

      Are any TCM CAN BUS DTCs present?

      Yes 

      No 

      • Go To  2
  2. CHECK IF ESM DTCS ARE PRESENT 
    1. With the scan tool, read ESM DTCs.

      Are any ESM DTCs present?

      Yes 

      No 

      • Using the schematics as a guide, check the Transmission Control Module A (TCMA) terminals for corrosion, damage or terminal push out. If no problems are found, replace and program the TCMA in accordance with the Service Information. Refer to VALVE BODY, REMOVAL .
      • Perform the TRANSMISSION VERIFICATION TEST. Refer to STANDARD PROCEDURE .