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Recirculated/Fresh Air Modes do not Switch [11/2023 - ]: Description

If the air inlet mode cannot be changed between recirculation/fresh or exhaust gas odors can be smelled even though recirculation mode is selected, the following factors may be the cause.

Symptom Factor
  • Air inlet mode cannot be changed between recirculation/fresh
  • Exhaust gas odors can be smelled when air inlet mode set to recirculation mode
  • No. 1 blower damper servo sub-assembly malfunction
  • Damper link disconnection
  • Air inlet damper mechanically locked
  • Engine coolant temperature (high)
  • Air conditioner unit assembly malfunction
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