Diagnostic Test

WARNING: This page is about a different car, the 2016 Dodge Durango. However, it is still accessible from the selected car via links, so may be relevant.

CHECK IF THE DTC IS ACTIVE
1. Ignition on, engine not running.
2. With the scan tool, read HVAC DTCs.
  Is this DTC active?
  
  Yes
  - Go To 2
  No
  - Go To 4
CHECK (G39) SUN SENSOR SIGNAL CIRCUIT FOR A SHORT TO GROUND
1. Turn the ignition off to the lock position.
2. Disconnect the HVAC Module C1 harness connector.
3. Measure the resistance between ground and the (G39) Sun Sensor Signal 1 circuit.
  Is the resistance below 100k Ohms?
  
  Yes
  - Repair the (G39) Sun Sensor 1 Signal circuit for a short to ground.
  - Perform the HVAC VERIFICATION TEST. Refer to HVAC VERIFICATION TEST .
  No
  - Go To 3
CHECK THE SUN SENSOR
1. Replace the Sun Sensor in accordance with the Service Information. Refer to SENSOR, SUN, REMOVAL .
2. Perform the HVAC VERIFICATION TEST. Refer to HVAC VERIFICATION TEST .
  Did this DTC reset while performing the HVAC Verification Test?
  
  Yes
  - Replace and program the HVAC Module in accordance with the Service Information. Refer to MODULE, HVAC, REMOVAL .
  - Perform the HVAC VERIFICATION TEST. Refer to HVAC VERIFICATION TEST .
  No
  - Test complete.
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 HVAC VERIFICATION TEST .
  No
  - Test complete.