Engine fan turns on when air con is on? - Toyota Yaris Forums

Gc972 · 06-13-2020, 02:56 PM

I recently had my air con re-gassed. Since that was done, when I switch on the air con the engine fan comes on with it.

My car is a Yaris 1.3L petrol 2006. If I switch off the air con the fan switches off. I just don't understand why the fan is linked with the air con?

Just wondering if it's a temperature sensor? Just don't understand why it's randomly just started happening.

Thank you in advance for any responses

BLH · 06-13-2020, 07:54 PM

The engine fan starting when the AC is turned on. In my 2007 is normal operation.
If you recharged the AC. I understand if the charge is too low. The AC does not run. Maybe if it was not actually running. Starting the engine fan may not have been triggered on.

Bluevitz-rs · 06-20-2020, 07:58 PM

The fan needs to move air past the condenser to cool the refrigerant. How else is air suppose to cool it down unless you’re moving.

06-13-2020, 02:56 PM	#1
Gc972 I've made a post! Drives: Toyota Yaris 06 1.3L petrol Join Date: Jun 2020 Location: Uk Posts: 1	Engine fan turns on when air con is on? I recently had my air con re-gassed. Since that was done, when I switch on the air con the engine fan comes on with it. My car is a Yaris 1.3L petrol 2006. If I switch off the air con the fan switches off. I just don't understand why the fan is linked with the air con? Just wondering if it's a temperature sensor? Just don't understand why it's randomly just started happening. Thank you in advance for any responses Last edited by Gc972; 06-13-2020 at 03:13 PM.

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06-13-2020, 07:54 PM	#2
BLH Drives: 2007 Yaris Sedan Join Date: Apr 2009 Location: CT Posts: 281	The engine fan starting when the AC is turned on. In my 2007 is normal operation. If you recharged the AC. I understand if the charge is too low. The AC does not run. Maybe if it was not actually running. Starting the engine fan may not have been triggered on.

06-20-2020, 07:58 PM	#3
Bluevitz-rs 1NZ-6spd View User's Garage Drives: '05 6-Spd Vitz RS Join Date: Oct 2008 Location: Oshawa, Ontario, Canada Posts: 2,967	The fan needs to move air past the condenser to cool the refrigerant. How else is air suppose to cool it down unless you’re moving.