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.

CHECK FOR ANTI-LOCK BRAKE SYSTEM (ABS) MODULE DTCS
1. Turn the ignition on.
2. With the scan tool, read DTCs in the ABS Module.
  Are any ABS DTCs set?
  
  Yes
  - Perform the appropriate diagnostic procedure. Refer to DIAGNOSTIC CODE INDEX .
  No
  - Go To 2
CHECK FOR AN ACTIVE DTC
1. With the scan tool, read DTCM DTCs and record on the repair order.
2. Record the Environmental Data.
3. With the scan tool, erase DTCs.
4. Using the recorded 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 DTCM DTCs.
  Did the DTC return?
  
  Yes
  - Go To 4
  No
  - Go To 3
VERIFY SET CONDITION
NOTE:
Check with customer on the driving terrain when the code set (e.g. mud, sand, snow).
1. Allow the Transfer Case to cool down.
2. With the scan tool, erase DTCs.
3. Test drive vehicle on a straight dry paved road.
4. With the scan tool, read DTCs.
  Is the status Active for this DTC?
  
  Yes
  - Go To 4
  No
  - Perform the TESTING FOR AN INTERMITTENT CONDITION procedure. Refer to TESTING FOR AN INTERMITTENT CONDITION .
CHECK THE (K504) DRIVETRAIN 5-VOLT SUPPLY CIRCUIT FOR A SHORT TO GROUND
1. Turn the ignition off.
2. Disconnect the Transfer Case Shift Motor/Mode Sensor Assembly harness connector.
3. Disconnect the Drivetrain Control Module (DTCM) harness connector.
4. Check for continuity between ground and the (K504) Drive Train 5-volt Supply circuit at the DTCM harness connector.
  Is there continuity between ground and the (K504) Drive Train 5-volt Supply circuit?
  
  Yes
  - Repair the (K504) Drive Train 5-volt Supply circuit for a short to ground.
  - Perform the DTCM VERIFICATION TEST. Refer to DTCM VERIFICATION TEST .
  No
  - Go To 5
CHECK RELATED HARNESS CONNECTIONS
1. Disconnect all DTCM 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 DTCM 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 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 DTCM DTCs.
  Did the DTC return?
  
  Yes
  - Replace the DTCM in accordance with the Service information. Refer to MODULE, DRIVETRAIN CONTROL (DTCM), REMOVAL .
  - Perform the DTCM VERIFICATION TEST. Refer to DTCM VERIFICATION TEST .
  No
  - The wiring or poor connection problem has been repaired.
  - Perform the DTCM VERIFICATION TEST. Refer to DTCM VERIFICATION TEST .