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.

DTC IS ACTIVE
1. Turn the ignition on. Attempt to start the vehicle.
  NOTE:
  Move the shift lever through the different ranges back to park and try cranking several times.
2. With the scan tool select View DTCs.
  NOTE:
  If the DTC does not reset it may be necessary to test drive the vehicle.
  
  Is the status Active for this DTC?
  
  Yes
  - Go To 2
  No
  - Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT CONDITION .
DTCS PRESENT IN THE TRANSMISSION CONTROL MODULE (TCM)
NOTE:
If the scan tool is unable to communicate with the TCM, or if there are related communication DTCs present, perform the appropriate diagnostic procedure.
1. Turn the ignition on.
2. With the scan tool, select View DTCs in the TCM.
  Are there any DTCs present in the TCM?
  
  Yes
  - Refer to the POWERTRAIN CONTROL MODULE (PCM) - ELECTRICAL DIAGNOSTICS - 68RFE AUTOMATIC TRANSMISSION - 2500 HD & 3500 HD article and perform the appropriate diagnostic procedure.
  No
  - Go To 3
POWERTRAIN CONTROL MODULE (PCM)
1. Inspect the P/N signal circuit for a short to ground, or a short to voltage with the shifter in Drive or Reverse. Perform the appropriate diagnostic procedures in the POWERTRAIN CONTROL MODULE (PCM) - ELECTRICAL DIAGNOSTICS - 68RFE AUTOMATIC TRANSMISSION - 2500 HD & 3500 HD article.
2. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Transmission Range Sensor, the TCM, and the PCM.
3. Look for any chafed, pierced, pinched, or partially broken wires.
4. Look for broken, bent, pushed out or corroded terminals.
5. Perform any Technical Service Bulletins that may apply.
  Were any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Replace and program the Powertrain Control Module in accordance with the service information. Refer to MODULE, POWERTRAIN CONTROL, REMOVAL . Refer to PCM/ECM REPROGRAMMING - GAS .
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .