AE111 A/C amplifier connection?

2001 TOYOTA COROLLA
212,633 MILES • 1.6L • 4 CYL • 2WD • MANUAL
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GYAN
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I purchased my car listed above with the A/C amplifier removed and replaced with a mechanical thermostat by the previous owner. My problem is idle drops whenever I turn the A/C on, so I decided to buy a surplus A/C Amplifier and plug it in but when I turn the A/C on only the blower fan works the compressor is not engaging. I've already cleaned the throttle body and replaced IACV.
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Nov 15, 2023 at 8:37 AM
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STRAILER
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It sounds like you may have a bad ground, here is a guide to help you test the connections. Also, the engine may not be getting a signal that the A/C is on, this is why the idle speed does not kick up a little when the system is on.

Please go over this guide:

https://www.2carpros.com/articles/how-to-check-wiring

Here is the A/C system and A/C amplifier wiring diagram so you can see which wires to test and how the system works. Check out the images (below). Please let us know what happens.


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Nov 16, 2023 at 10:30 AM