Heater Performance: Notes
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.
See ENGINE COOLING SYSTEM before performing the following tests. Check the engine coolant level and flow, engine coolant reserve/recovery system operation, accessory drive belt condition and tension, radiator air flow and the fan drive operation. Perform the A/C System Performance Test, which is found within the HVAC SYSTEM TEST . If any Diagnostic Trouble Codes (DTCs) are found in the A/C heater control or Powertrain Control Module (PCM), repair as necessary.