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Radiator and compressor fan not functioning

Tiny
BLESSING EWOBOR
  • MEMBER
  • 2010 TOYOTA HIGHLANDER
  • 4 CYL
  • AUTOMATIC
  • 127,897 MILES
Good evening, the question here is not concerning the model that I selected but for Toyota Venza, I couldn't find Venza among the model. The radiator fan and compressor are not functioning but when I connected both to 12v battery, they were functioning. So the issue is not the fans but the circuit, the compressor is engaging. Please could you help me with the fan circuit diagram?
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Tuesday, December 22nd, 2020 AT 12:01 PM

13 Replies

Tiny
DANNY L
  • MECHANIC
  • 5,648 POSTS
Hello, I'm Danny.

Here is the radiator fan wiring diagram you requested. This is a wire testing tutorial for you to view as well:

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

I've attached the wiring diagram below for the vehicle. I've cut the picture into 2 pieces so you can view larger. Hope this helps and thanks for using 2CarPros.
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Tuesday, December 22nd, 2020 AT 1:35 PM
Tiny
BLESSING EWOBOR
  • MEMBER
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Good morning. Thank you but the diagram that I requested for is Toyota Venza not Highlander, I choose Highlander because I could not find Toyota Venza among the model.
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Tuesday, December 22nd, 2020 AT 5:35 PM
Tiny
DANNY L
  • MECHANIC
  • 5,648 POSTS
Hello again.

Okay, here is the fan wiring diagram for a 4 cylinder Toyota Venza. I've cut the picture in half so you can view larger and attached below. Hope this helps and thanks again for using 2CarPros.

Danny-
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Tuesday, December 22nd, 2020 AT 10:43 PM
Tiny
BLESSING EWOBOR
  • MEMBER
  • 663 POSTS
Thank you, it is still blur, can anything be done?
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Wednesday, December 23rd, 2020 AT 3:28 PM
Tiny
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  • MEMBER
  • 663 POSTS
Could Toyota Venza be added among the Toyota's model?
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Wednesday, December 23rd, 2020 AT 4:00 PM
Tiny
DANNY L
  • MECHANIC
  • 5,648 POSTS
Hello again

Yes, the Toyota Venza is a car listed in the Toyota car section. The Highlander is a truck and listed in the Toyota truck section. I've re- attached the wiring diagram below. I've cut the picture into a few pieces so you can view even larger. Hope this helps and thanks again for using 2CarPros.
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Wednesday, December 23rd, 2020 AT 5:31 PM
Tiny
BLESSING EWOBOR
  • MEMBER
  • 663 POSTS
It is better, thank you very much.
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Wednesday, December 23rd, 2020 AT 5:41 PM
Tiny
DANNY L
  • MECHANIC
  • 5,648 POSTS
You're welcome!
Let us know if you have any further questions on this issue. Thanks again for using 2CarPros.

Danny-
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Wednesday, December 23rd, 2020 AT 6:09 PM
Tiny
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  • MEMBER
  • 663 POSTS
From the first diagram sent, I can check for power and ground on the fan ECU using test light. How will I check for the signal (third wire) on the signal wire if it is functioning?
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Thursday, March 11th, 2021 AT 11:39 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,262 POSTS
Hi,

I noticed it has been a few days since someone responded. Have you made any progress?

Joe
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Monday, March 15th, 2021 AT 11:22 AM
Tiny
DANNY L
  • MECHANIC
  • 5,648 POSTS
Hello again.

Have you checked the black-white wire A4 from the fan relay in the wiring diagram I've provided to be a sufficient ground? I've reattached the picture and circled in red. Let us know and we'll go from there.

Danny-
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Monday, March 15th, 2021 AT 10:52 PM
Tiny
BLESSING EWOBOR
  • MEMBER
  • 663 POSTS
Thank you.
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Monday, March 15th, 2021 AT 10:55 PM
Tiny
DANNY L
  • MECHANIC
  • 5,648 POSTS
You're welcome!
Keep us updated as to what you find. We're here to help. Thanks again for using 2CarPros.

Danny-
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Monday, March 15th, 2021 AT 11:29 PM

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