Diagnostic Test

WARNING: This page is about a different car, the 2020 Jeep Renegade. 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 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 HVAC Module DTCs.
  Did the DTC return?
  
  Yes
  - Go To 2
  No
  - Perform the TESTING FOR AN INTERMITTENT CONDITION procedure. Refer to TESTING FOR AN INTERMITTENT CONDITION .
PERFORM HVAC MODULE SELF LEARN PROCEDURE AND CHECK FOR THE DTC TO RETURN
1. Perform the HVAC MODULE SELF LEARN PROCEDURE. Refer to HVAC MODULE SELF LEARN PROCEDURE .
2. With the scan tool, read HVAC Module DTCs.
  Did the DTC return?
  
  Yes
  - Go To 3
  No
  - The problem has been repaired.
  - Perform the HVAC VERIFICATION TEST. Refer to HVAC VERIFICATION TEST .
INSPECT THE DOORS, DUCTS, AND LINKAGE FOR CONDITIONS THAT COULD CAUSE BINDING
1. Inspect each door and linkage for conditions that could cause any of the actuators to not move freely across the total travel of the door.
2. Check for debris or objects in the ducts that could hinder the door movement.
3. Inspect the door stops for damage.
4. If necessary to gain access to the applicable door and ducts. Refer to HOUSING, HVAC, REMOVAL AND INSTALLATION .
  Were any problems found?
  
  Yes
  - Repair the binding condition as necessary.
  - IMPORTANT: Perform the HVAC MODULE SELF LEARN PROCEDURE. Refer to HVAC MODULE SELF LEARN PROCEDURE .
  - Perform the HVAC VERIFICATION TEST. Refer to HVAC VERIFICATION TEST .
  No
  - Go To 4
CHECK RELATED HARNESS CONNECTIONS
1. Disconnect all HVAC 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 HVAC 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 HVAC Module DTCs.
  Did the DTC return?
  
  Yes
  - Replace the HVAC Module in accordance with the Service information. Refer to MODULE, HVAC, REMOVAL AND INSTALLATION .
  - IMPORTANT: Perform the HVAC MODULE SELF LEARN PROCEDURE. Refer to HVAC MODULE SELF LEARN PROCEDURE .
  - Perform the HVAC VERIFICATION TEST. Refer to HVAC VERIFICATION TEST .
  No
  - The wiring or poor connection problem has been repaired.
  - IMPORTANT: Perform the HVAC MODULE SELF LEARN PROCEDURE. Refer to HVAC MODULE SELF LEARN PROCEDURE .
  - Perform the HVAC VERIFICATION TEST. Refer to HVAC VERIFICATION TEST .