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Home >> Chrysler >> 2011 >> 300 C, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1572 (6.7L Diesel - DTCS P0402 To P0653 - 2500 Hd) >> DTC Troubleshooting >> P0605-Internal Control Module ROM >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2017 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
  1. Check For Technical Service Bulletin Or Software Update 
    1. Check For Any Applicable Technical Service Bulletins (Tsb).
    2. Check For Any Applicable PCM Software Updates.

      Are There Any Tsbs Or PCM Software Updates That Address This DTC?

      Yes 

      • Perform The Appropriate Repair Outlined In The Tsb.
      • If There Is A Software Update, Use The Scan Tool To Reflash The PCM With The Latest Calibration.
      • Go To  2

      No 

      • Replace The Powertrain Control Module In Accordance With The Service Information.
      • Perform The POWERTRAIN VERIFICATION TEST. Refer To INTERMITTENT CONDITION .
  2. Powertrain Control Module 
    1. Run The Engine For One Minute And Shut Off.
    2. With The Scan Tool, Read DTCS.

      Did This DTC Show As Active Or Pending?

      Yes 

      • Replace The Powertrain Control Module In Accordance With The Service Information.
      • Perform The POWERTRAIN VERIFICATION TEST. Refer To POWERTRAIN VERIFICATION TEST .

      No