AC issues

Tiny
EFRAINR
  • MEMBER
  • 2007 TOYOTA PRIUS
  • 1.6L
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 110,000 MILES
I am having a lot of trouble locating the AC amplifier unit or ECU on my car. Please help! Any help would be great! I have located the control module down by the middle hump near the console, but cannot find the other one.
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Tuesday, February 28th, 2017 AT 6:33 AM

3 Replies

Tiny
HMAC300
  • EXPERT
There is no amplifier are you sure it is not a sensor or thermistor. Recheck what you are looking for and get back to us. If it is the control unit it is the part where you do your adjustments like temperature blower speed etc.
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Tuesday, February 28th, 2017 AT 8:10 AM
Tiny
EFRAINR
  • MEMBER
Okay, here goes the long version. Lol. At the end of last summer the A/C was working fine. It was in use and cooling when I smelled a slight electrical burning smell. The fan continued blowing but no longer cold air. Heat still works fine, no error messages on control unit. I did a little online research as I do before most projects and the most likely causes for this issue were Air conditioner control module part # 88650-47051 which I located near the floor in the middle of the dash. After I removed it I gave the control module the old smell test to see if it smelled burnt and it did not. I also popped the cover off and visually inspected the circuit board. No visible burn marks on circuit board. So the other option I read online was this A/C Amplifier AKA A/C ECU or A/C ECM. If it does not have this part on it that could explain why I cannot locate it. I currently have the entire dash apart. Should I go ahead and replace the first part and see if that takes care or it? Or do you have any other suggestions? Thanks in advance.
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Tuesday, February 28th, 2017 AT 10:44 AM
Tiny
HMAC300
  • EXPERT
Even if you replace the part it will have to be programmed for your car by a mechanic. As this is auto temperature control it should have been scanned for codes to see if it is/was a sensor bad as there are a few with auto temperature. If you already have the newer/used part put it in then get it programmed and scanned for codes by a mechanic then go from there.
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Tuesday, February 28th, 2017 AT 11:59 AM

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