Diagnostic Test

WARNING: This page is about a different car, the 2014 Dodge Journey. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FOR ACTIVE BUS COMMUNICATION DTCS
1. Ignition on, engine not running.
2. Using the scan tool, read BCM DTCs.
  Are there any Active BUS Communication DTCs present?
  
  Yes
  - Refer to DIAGNOSIS AND TESTING and perform the appropriate diagnostic procedure.
  No
  - Go To 2
CHECK FOR STORED BUS COMMUNICATION DTCS
1. Ignition on, engine not running.
2. Using the scan tool, read DTCs.
  Are there any inactive or stored BUS Communication DTCs present?
  
  Yes
  - Refer to DIAGNOSIS AND TESTING and perform the Stored Lost Communication DTCs diagnostic procedure.
  No
  - Go To 3
CHECK FOR PCM A/C COMPRESSOR DTCS
1. Ignition on, engine not running.
2. Using the scan tool, read PCM DTCs.
  Are there any PCM A/C Compressor DTCs present?
  
  Yes
  - Refer to the DTC INDEX article and perform the appropriate PCM DTC diagnostic procedures.
  - Perform the HVAC VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 4
CHECK THE A/C COMPRESSOR
1. Ignition on, engine running.
2. Using the A/C heater Control, request A/C maximum cool.
  Does the A/C Compressor Clutch engage?
  
  Yes
  - Go To 5
  No
  - Refer to COMPRESSOR, A/C, DIAGNOSIS AND TESTING for additional A/C Compressor diagnostics.
CHECK IF THE DTC RESETS
1. Turn the ignition off to the lock position.
2. Ignition on, engine not running.
3. Using the scan tool, erase HVAC DTCs.
4. Turn the ignition off to the lock position.
5. Ignition on, engine not running.
6. Using the scan tool, perform the A/C Cooldown Test. Follow the instructions on the scan tool.
7. Using the scan tool, read HVAC DTCs.
  Does this DTC reset?
  
  Yes
  - Replace and program the A/C Heater Module in accordance with the Service Information. Refer to CONTROL, A/C AND HEATER, REAR, REMOVAL .
  - Perform the HVAC VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 6
CHECK THE WIRING AND CONNECTORS
1. The conditions necessary to set the DTC are not present at this time.
2. Using the scan tool, check the Environmental Data to help identify the conditions in which the DTC was set.
3. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.
4. Wiggle the wiring and connectors while checking for shorted and open circuits.
  Were there any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the HVAC VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Test complete.