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.

REFLASH PCM
1. Using the scan tool, reflash the PCM with latest software.
  Was the flash successful?
  
  Yes
  - Go to 2.
  No
  - Using the schematics as a guide, check the Powertrain Control Module (PCM) terminals and connectors 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, (PCM) 5.7L / 6.4L, REMOVAL or MODULE, POWERTRAIN CONTROL, (PCM) 6.7L DIESEL, REMOVAL .
  - Perform the Transmission Verification Test. (Refer to 68RFE TRANSMISSION VERIFICATION TEST ).
POWERTRAIN CONTROL MODULE (PCM)
1. Start the Engine and run for one minute.
2. With the scan tool, read PCM DTCs.
  Did DTC P0604 set?
  
  Yes
  - Using the schematics as a guide, check the Powertrain Control Module (PCM) terminals and connectors 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, (PCM) 5.7L / 6.4L, REMOVAL or MODULE, POWERTRAIN CONTROL, (PCM) 6.7L DIESEL, REMOVAL .
  - Perform the Transmission Verification Test. (Refer to 68RFE TRANSMISSION VERIFICATION TEST ).
  No
  - Test complete.