Diagnostic Test

TEST FOR INTERMITTENT CONDITIONS OR POOR CONNECTIONS
1. Turn the ignition on.
2. With the scan tool, generate and record the Vehicle Scan Report.
3. With the scan tool, erase DTCs from HVAC Module.
4. Turn the ignition off.
5. Wait 10 seconds.
6. Turn the ignition on and start the engine.
7. Operate the vehicle in the conditions that set this DTC.
8. With the scan tool, read DTCs from HVAC Module.
  Did the DTC return?
  
  Yes
  - Go to 2
  No
  - The condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all the related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals and the correct pin tension. If no problem is found, the test is complete. Perform the TESTING FOR AN INTERMITTENT CONDITION. Refer to TESTING FOR AN INTERMITTENT CONDITION .
CHECK FOR ACTIVE INSTRUMENT PANEL CLUSTER (IPC) MODULE DTCS
1. With the Scan tool, read Instrument Panel Cluster (IPC) Module DTCs.
  Is there any problem?
  
  Yes
  - Repair all Instrument Panel Cluster (IPC) Module active DTCs.
  No
  - Go to 3
CHECK THE LOSS OF COMMUNICATION WITH INSTRUMENT PANEL CLUSTER (IPC) MODULE
1. Perform the NO RESPONSE FROM IPC. Refer to SCAN TOOL WILL NOT COMMUNICATE WITH CAN BUSSTANDARD PROCEDURE .
  Is there any problem?
  
  Yes
  - Repair as needed. Perform the HVAC VERIFICATION TEST. Refer to HVAC VERIFICATION TEST .
  No
  - Go to 4
CHECK HVAC MODULE HARNESS CONNECTIONS
1. Disconnect all HVAC Module harness connectors.
2. Disconnect all related in-line harness connectors (if equipped).
3. Disconnect all related systems harness connectors.
4. Check the harness and components connectors and the male female terminals for the following conditions
  - Proper connector installation.
  - Apparently damaged connectors lock.
  - Corrosion.
  - Water contact signs.
  - If the weatherproof protection is damaged (If equipped).
  - Bent terminals. Overheating due to poor connection (terminal should be colorless due to overheat).
  - Terminals that have been damaged due to being pushed. Perform a terminal drag test on each terminal to verify proper terminal tension.
5. Repair any damage found on step 4.
6. Reconnect all HVAC Module harness connectors. Make sure all the connectors are fully seated and the connector locks are fully engaged.
7. Reconnect all the in-line harness connectors (if equipped). Make sure all the connectors are fully seated and the connector locks are fully engaged.
8. Reconnect all related harness connectors. Make sure the connectors are fully seated.
9. Turn the ignition on.
10. With the scan tool, erase DTCs.
11. Operate the vehicle in the conditions that set the DTC.
12. With the scan tool, read HVAC Module DTCs.
  Did the DTC return?
  
  Yes
  - IF THE PROBLEM PERSISTS, CONTACT FCA SPECIALIZED SUPPORT.
  No
  - TEST COMPLETE.