AC AIRFLOW MODE DOES NOT CHANGE

  • Tiny
  • hidme
  • 1998 Toyota Camry
  • 150,000 miles

98 Camry, ac airflow mode does not change. Now it stays blowing front, can not change to floor or any other mode.

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Thursday, July 5th, 2012 AT 4:03 AM

10 Replies

  • Tiny
  • caradiodoc
  • Expert
  • 25,635 posts

If your system uses vacuum controls to move the mode doors, check for a cracked or disconnected vacuum hose on the engine or a restricted check valve near the firewall.

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Thursday, July 5th, 2012 AT 5:14 AM
  • Tiny
  • KHLow2008
  • Expert
  • 41,994 posts

Check the air outlet servomotor. It is most probably stuck and not changing the air mode.

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Thursday, July 5th, 2012 AT 1:15 PM
  • Tiny
  • hidme
  • Member

I opened central console and lower panel at drverside. Check the ac mode swith, it looks fine(That thing looks hard to have problem, but the continuity checking is different from manual(I think manaul is wrong, for different model or my car has diferent switch). I still have problem of reaching servomotor. Can anyone give some hint?
Thanks

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Monday, July 9th, 2012 AT 2:50 PM
  • Tiny
  • Wrenchtech
  • Expert
  • 20,281 posts

Look under the dash on the driver's side and look to the right. You may have to remove a hush panel and/or vent tube.

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Monday, July 9th, 2012 AT 3:12 PM
  • Tiny
  • KHLow2008
  • Expert
  • 41,994 posts

You need to remove the air duct # 13 to get at the servomotor.

Thses are the instructions from our database.

Removal & Installation

Disconnect negative battery cable. Remove instrument panel lower finish panel. Remove air duct. Remove air outlet servomotor. To install, reverse removal procedure.

Is yours manual or automatic climate control system? Our database only shows the manual system.

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Monday, July 9th, 2012 AT 3:15 PM
  • Tiny
  • hidme
  • Member

The manual I have is bought from autozone long time ago. It is manaul. It does not metion servomotor.
Thanks

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Monday, July 9th, 2012 AT 3:45 PM
  • Tiny
  • Wrenchtech
  • Expert
  • 20,281 posts

It's a servomotor

http://i1198.photobucket.com/albums/aa448/Wrenchtech/79348966.gif

http://i1198.photobucket.com/albums/aa448/Wrenchtech/79348967.gif

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Monday, July 9th, 2012 AT 4:07 PM
  • Tiny
  • KHLow2008
  • Expert
  • 41,994 posts

Manual system uses a sevomotor as well as the controls are electrical and not by manual linkages.

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Monday, July 9th, 2012 AT 4:36 PM
  • Tiny
  • hidme
  • Member

I finally got it off. It stop at some position when I try to to turn the switch. Is it repairable?

Thanks

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Tuesday, July 10th, 2012 AT 1:45 PM
  • Tiny
  • Wrenchtech
  • Expert
  • 20,281 posts

You have to determine whether the motor is bad or one of the doors is stuck/broken.

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Tuesday, July 10th, 2012 AT 2:05 PM

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