System Diagnosis - Air Delivery

Important:
^ If Heater and A/C Control Head and/or Programmer appear completely inoperative, go to "Overall System Check," and perform Chart # 2 before proceeding. System Check - RPO C68

If air flow does not come from the proper outlets under one or more operating modes, at least one of the air valves is not moving to the proper position. Consult the table on this page to determine proper positions, then perform Chart # 1 and/or the Vacuum Diagnostics. Air Delivery Vacuum System - Testing