2003 Lexus ES 300 A/C blower only runs at slow speeds

Tiny
ROGERLARIAT
  • MEMBER
  • 2003 LEXUS ES 300
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 122,000 MILES
The A/C blower only blows at low speeds. The speed control display shows that the fan works at all speed levels, however there is minimal air flow.
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Monday, August 25th, 2008 AT 11:03 AM

3 Replies

Tiny
RASMATAZ
  • MEMBER
Sounds like the problem lies on the AC Amplifier-what it does is send signals to the blower motor to control its speed by changes in duty ratio, To include trouble in the blower motor wiring circuit.


http://www.2carpros.com/forum/automotive_pictures/12900_blower_9.jpg

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Thursday, September 4th, 2008 AT 9:24 PM
Tiny
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Where is the A/C amplifier located?
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Friday, September 5th, 2008 AT 9:32 AM
Tiny
RASMATAZ
  • MEMBER
Where is the A/C amplifier located?

Its on the heater control housing sub-assy
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Friday, September 5th, 2008 AT 2:30 PM

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