Diagnostic Test

WARNING: This page is about a different car, the 2019 Jeep Compass. However, it is still accessible from the selected car via links, so may be relevant.

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 2
  No
  - Perform the INTERMITTENT CONDITIONS TEST. Refer to TESTING FOR AN INTERMITTENT CONDITION .
CHECK THE DRIVETRAIN CONTROL MODULE (DTCM) HARNESS FOR PROPER ORIENTATION
1. Turn the Ignition off.
2. Disconnect the DTCM C1 harness connector.
3. Using the wire diagram as a guide, check that the circuits at pins 3 and 4 are not reversed in the DTCM harness connector (wire side).
  Were any problems found?
  
  Yes
  - Repair the DTCM wire harness as needed.
  - Perform the DTCM VERIFICATION Procedure. Refer to DTCM VERIFICATION TEST .
  No
  - Go To 3
CHECK THE DRIVETRAIN CONTROL MODULE (DTCM) WIRE HARNESS FOR PROPER ORIENTATION
1. Disconnect the PTU harness connector.
2. Using the wire diagram as a guide, check that the circuits at pins 2 and 3 of the PTU harness connector (wire side) are correctly connected; specifically check that they are not reversed.
  Were any problems found?
  
  Yes
  - Repair the DTCM wire harness as needed.
  - Perform the DTCM VERIFICATION Procedure. Refer to DTCM VERIFICATION TEST .
  No
  - Go To 4
CHECK THE DRIVETRAIN CONTROL MODULE (DTCM) WIRE HARNESS FOR PROPER ORIENTATION
1. Using the wire diagram as a guide, check that the circuits at pins 79 and 57 of the DTCM harness connector (wire side) are correctly connected; specifically check that they are not reversed.
  Were any problems found?
  
  Yes
  - Repair the DTCM wire harness as needed.
  - Perform the DTCM VERIFICATION Procedure. Refer to DTCM VERIFICATION TEST .
  No
  - Go To 5
CHECK THE DRIVETRAIN CONTROL MODULE (DTCM) WIRE HARNESS FOR PROPER ORIENTATION
1. Using the wire diagram as a guide, check that the circuits at pins 10 and 6 of the PTU harness connector (wire side) are correctly connected; specifically check that they are not reversed.
  Were any problems found?
  
  Yes
  - Repair the DTCM wire harness as needed.
  - Perform the DTCM VERIFICATION Procedure. Refer to DTCM VERIFICATION TEST .
  No
  - Go To 6
CHECK THE DTCM FOR ACTIVE DTC
1. With the scan tool, erase DTCM DTCs.
2. Cycle ignition off and back to on.
3. With the scan tool, read DTCM DTCs.
  Did this DTC reset?
  
  Yes
  - Go To 8
  No
  - Go To 7
CHECK THE POWER TRANSFER UNIT (PTU) ACTUATOR MOTOR FOR PROPER OPERATION
1. Check that the PTU Actuator Motor is working correctly.
  Is the PTU Actuator Motor working correctly?
  
  Yes
  - Go To 8
  No
  - Replace the PTU in accordance with the service information. Refer to REMOVAL AND INSTALLATION .
  - Perform the DTCM VERIFICATION Procedure. Refer to DTCM VERIFICATION TEST .
CHECK RELATED HARNESS CONNECTIONS
1. Disconnect all DTCM Module 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 Module 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 Module DTCs.
  Did the DTC return?
  
  Yes
  - Replace the DTCM Module in accordance with the Service information. Refer to MODULE, DRIVETRAIN CONTROL (DTCM), REMOVAL AND INSTALLATION .
  - Perform the DTCM VERIFICATION TEST. Refer to DTCM VERIFICATION TEST .
  No
  - Repair the poor connections as necessary.
  - Perform the DTCM VERIFICATION TEST. Refer to DTCM VERIFICATION TEST .