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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.
Monday, August 25th, 2008 AT 11:03 AM

3 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
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.


https://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
  • MECHANIC
  • 75,992 POSTS
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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