Radiator fan issue, which relay is responsible for turning the fan on?

2010 TOYOTA VENZA
125,000 MILES • 4 CYL • 2WD • AUTOMATIC
Avatar
BHAMDOC1973
  • MEMBER
  • 2,008 POSTS
A/C is very cold while driving, once i stop it goes down in cooling, check the fan and it's not on. Which relay is responsible for turning the fan on? And which pins do i jump to see if the fan comes on?
This is the 2.7l engine.
Aug 14, 2023 at 8:51 AM
Advertisement
Avatar
STRAILER
  • CERTIFIED EXPERT
  • 53,855 POSTS
There are three fuses and three relays that run the system. here are the radiator cooling fan wiring diagrams so you can see how the system works and which fuses and relays to check. Check out the images (below). Please let us know how it goes.
Images (Click to enlarge)
Attached Media
Attached Media
Aug 15, 2023 at 8:52 AM
Avatar
BHAMDOC1973
  • MEMBER
  • 2,008 POSTS
But how do i check if the fan works at least so i can eliminate whether it's bad or not?
Aug 15, 2023 at 9:04 AM
Advertisement
Avatar
STRAILER
  • CERTIFIED EXPERT
  • 53,855 POSTS
So red is the ground wire and brown is the power wire, run jumper from the battery to the fan.
Aug 16, 2023 at 10:52 AM