Diagnostic Test

WARNING: This page is about a different car, the 2015 RAM 1500. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FOR BODY CONTROL MODULE (BCM) CONTROLLER AREA NETWORK (CAN) BUS DIAGNOSTIC TROUBLE CODES (DTCS)
1. With the scan tool, read BCM DTCs.
  Are any BCM CAN bus DTCs set?
  
  Yes
  - Repair BCM CAN bus DTCs. If DTC U0002 is set, perform that diagnostic first. Refer to the BODY CONTROL MODULE (BCM) - DIAGNOSTIC CODE INDEX - 1500 article .
  - Perform the TRANSMISSION VERIFICATION TEST. Refer to TRANSMISSION VERIFICATION TEST .
  No
  - Go To 2
CHECK FOR POWERTRAIN CONTROL MODULE (PCM) DTCS
1. With the scan tool, read PCM DTCs.
  Are any PCM DTCs set?
  
  Yes
  - Repair PCM DTC(s). Refer to the DTC INDEX - 1500 article .
  - Perform the TRANSMISSION VERIFICATION TEST. Refer to TRANSMISSION VERIFICATION TEST .
  No
  - Using the schematics as a guide, check the TCM 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 and program the TCM in accordance with the Service Information. Refer to MODULE, TRANSMISSION CONTROL . Refer to MODULE, TRANSMISSION CONTROL, MODULE PROGRAMMING .
  - Perform the TRANSMISSION VERIFICATION TEST. Refer to TRANSMISSION VERIFICATION TEST .