Question on Radiator/AC Condenser fan speed

[rayfloyd170]

Hi,

I'm just curious and wanted to know if this is normal behavior of the Cooling Fan for radiator/AC Condenser of Yaris Gen 3.

The LOW SPEED of the Fan comes ON only when i switch on my A/C while engine is still cold. If the A/C is OFF it wont spin at low speed however when it reaches 96degC it automatically spins at high speed which is expected to cool the engine. High speed fan stops cyclic at about 88-90degC and comes On again when it reaches 96degC but the low speed never turns ON when A/C is OFF.

I am expecting the Low Speed to always turn ON but it does not especially when A/C is OFF. I am not sure if this is how it really works.

I already checked the Fan relay No.1(4pins) and Fan relay No.2 (5pins) and the 1.3ohm resistor. All of them are good and working fine.

Although i am still safe from overheating since the high speed works even if the A/C if OFF, i just dont like the engine always reaching 96deg cyclically. Th low speed fan should always be working in my understanding regardless of A/C is OFF or ON.

Your ideas are highly appreciated.