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.

VERIFY THE DTC IS ACTIVE
1. Ignition on, engine not running.
2. With the scan tool, read HVAC DTCs.
  Does the scan tool display this DTC as active?
  
  Yes
  - Go To 2
  No
  - Go To 5
CHECK THE (C7) BLOWER MOTOR SUPPLY CIRCUIT FOR A SHORT TO GROUND
1. Turn the ignition off to the lock position.
2. Disconnect the HVAC Module harness connector.
3. Disconnect the Blower Motor Power Module C1 harness connector.
4. Measure the resistance between ground and the (C7) Blower Motor Supply circuit.
  Is the resistance below 100k Ohms?
  
  Yes
  - Repair the (C7) Blower Motor Supply circuit for a short to ground.
  - Perform the HVAC VERIFICATION TEST. Refer to HVAC VERIFICATION TEST .
  No
  - Go To 3
CHECK THE (C806) BLOWER MOTOR GROUND SIGNAL CIRCUIT FOR A SHORT TO GROUND
1. Measure the resistance between ground and the (C806) Blower Motor Ground Signal circuit.
  Is the resistance below 100k Ohms?
  
  Yes
  - Repair the (C806) Blower Motor Ground Signal circuit for a short to ground.
  - Perform the HVAC VERIFICATION TEST. Refer to HVAC VERIFICATION TEST .
  No
  - Go To 4
CHECK THE BLOWER MOTOR POWER MODULE
1. Turn the ignition off to the lock position.
2. Replace the Blower Motor Power Module in accordance to the Service Information. Refer to MODULE, POWER, FRONT BLOWER MOTOR, REMOVAL or MODULE, POWER, REAR BLOWER MOTOR, REMOVAL .
3. Perform the HVAC VERIFICATION TEST. Refer to HVAC VERIFICATION TEST .
  Did this DTC reset 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. With 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.