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Old 10-25-2019, 09:38 PM   #1
alec801
 
Drives: aw11, ep91, ncp91
Join Date: Feb 2016
Location: sydney
Posts: 7
Radiator fans only come on with red light

I've got a 2006 yaris.
Would anybody have any ideas as to why my radiator fans won't turn on until the red overheating light comes on?

I can see the temp go up to 80-90°C where the fans used to turn on but they won't come on anymore.

I have replaced thermostat, coolant temp sensor, fan relay 02, checked a few related fuses but figure out what is going on.

any ideas?
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Old 10-26-2019, 11:16 AM   #2
06YarisRS
 
Drives: 06 2ZR Turbo Yaris RS
Join Date: Aug 2017
Location: Fredericton, New Brunswick, Canada
Posts: 2,384
Water pump? Breaks in wiring/grounds? All connectors are seated properly? The fan itself? Maybe try applying a direct 12v to the fan and seee if it works.
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