Diagnostic Test

WARNING: This page is about a different car, the 2015 RAM 3500 HD and 2015 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FOR BCM CAN BUS DTCS
1. With the scan tool, read BCM DTCs.
  Are any BCM CAN bus DTCs?
  
  Yes
  - Repair BCM CAN bus DTCs. Refer to BODY CONTROL MODULE (BCM) - DIAGNOSTIC CODE INDEX - 2500 HD & 3500 HD article.
  No
  - Go To 2
CHECK FOR BCM DTCS
1. With the scan tool, read BCM DTCs.
  Are any BCM DTCs set?
  
  Yes
  - Repair BCM DTCs. Refer to BODY CONTROL MODULE (BCM) - DIAGNOSTIC CODE INDEX - 2500 HD & 3500 HD article.
  - Perform the appropriate TRANSMISSION VERIFICATION TEST. Refer to 66RFE TRANSMISSION VERIFICATION TEST .
  No
  - Using the schematics as a guide, check the Powertrain Control Module (PCM) connector and all related in-line connector terminals for corrosion, damage, or pushed out terminals. Pay particular attention to the power and ground circuits. If no problems are found, replace the PCM and perform programming procedures. Refer to MODULE, POWERTRAIN CONTROL, REMOVAL or MODULE, POWERTRAIN CONTROL, 6.7L DIESEL, REMOVAL .
  - Perform the TRANSMISSION VERIFICATION TEST. Refer to 66RFE TRANSMISSION VERIFICATION TEST .