Inspect the AC-heater ducts, doors, hoses, cabin filters, and outlets; determine the necessary action.

Procedure should include

  • checking ducts, doors, and outlets for proper air flow
  • determining the cause of any obstructions or abnormal noise
  • checking the cabin filter for needed service.

Process/Skill Questions:

  • How would a technician inspect AC-heater ducts, doors, hoses, cabin filters, and outlets?
  • How often should cabin filters be serviced?
  • What might happen if the cabin filter was restricted?