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 RELATED ENGINE DTCS
NOTE:
This is not a Transmission Input Speed Sensor DTC.
1. Turn the Ignition on.
2. With the scan tool, read all PCM DTCs.
  Are any Engine speed related DTCs set?
  
  Yes
  - Repair Engine speed DTCs. Refer to DTC INDEX - 1500 article .
  - Perform the TRANSMISSION VERIFICATION TEST. Refer to 65RFE TRANSMISSION VERIFICATION TEST .
  No
  - Go To 2
CHECK FOR AN ACTIVE CONDITION
1. With the scan tool, read TCM and PCM DTCs and record on repair order.
2. Record the Event Data and Environmental Data.
3. With the scan tool, erase PCM and TCM DTCs.
4. Using the recorded Event and Environmental Data, along with the When Monitored and Set Conditions above, operate the vehicle in the conditions that set the DTC.
5. With the scan tool, read PCM and TCM DTCs.
  NOTE:
  Refer to all engine DTCs first in the following question.
  
  Pick the answer below that best describes your findings.
  
  TCM DTC P0726 is set.
  - Go To 3
  PCM DTC is set.
  - Repair engine DTCs. Refer to DTC INDEX - 1500 article .
  - Perform the TRANSMISSION VERIFICATION TEST. Refer to 65RFE TRANSMISSION VERIFICATION TEST .
  No DTC is set.
  - Go To 4
CHECK RELATED HARNESS CONNECTIONS
1. Disconnect all PCM harness connectors.
2. Disconnect all related in-line harness connections (if equipped).
3. Disconnect the related component harness connectors.
4. Inspect harness connectors, component connectors, and all male and female terminals for the following conditions:
  - Proper connector installation.
  - Damaged connector locks.
  - Corrosion.
  - Other signs of water intrusion.
  - Weather seal damage (if equipped).
  - Bent terminals.
  - Overheating due to a poor connection (terminal may be discolored due to excessive current draw).
  - Terminals that have been pushed back into the connector cavity.
  - Perform a terminal drag test on each connector terminal to verify proper terminal tension.
  Repair any conditions that are found.
5. Reconnect all PCM harness connectors. Be certain that all harness connectors are fully seated and the connector locks are fully engaged.
6. Reconnect all in-line harness connectors (if equipped). Be certain that all connectors are fully seated and the connector locks are fully engaged.
7. Reconnect all related component harness connectors. Be certain that all connectors are fully seated and the connector locks are fully engaged.
8. With the scan tool, erase DTCs.
9. Using the recorded Event and Environmental Data, along with the When Monitored and Set Conditions above, operate the vehicle in the conditions that set the DTC.
10. With the scan tool, read PCM DTCs.
  Did the DTC return?
  
  Yes
  - Replace the Powertrain Control Module (PCM) in accordance with the Service information. Refer to MODULE, POWERTRAIN CONTROL, REMOVAL .
  - Perform the TRANSMISSION VERIFICATION TEST. Refer to 65RFE TRANSMISSION VERIFICATION TEST .
  No
  - Perform the TRANSMISSION VERIFICATION TEST. Refer to 65RFE TRANSMISSION VERIFICATION TEST .
  - Test complete.
CHECK WIRING AND CONNECTORS
1. The conditions necessary to set the DTC are not present at this time.
2. Using the schematics as a guide, inspect the wiring and connectors specific to this circuit.
3. Wiggle the wires while checking for shorted and open circuits.
4. Check for any Service Bulletins that may apply.
  Were any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the TRANSMISSION VERIFICATION TEST. Refer to 65RFE TRANSMISSION VERIFICATION TEST .
  No
  - Test complete.