PWM cooling fan(s) control using ECM

[samckitt]

Is this it?

[PTAddict]

Originally Posted by SlowProgress

Hey Andrew. Here is a photo from the build thread.



The Fan part number is 23455465. I think others have said it is around 850W at maximum, so around 70A roughly. I am sure there are other connectors out there but I was sort of hoping to find this one.

Hi SP,

When I look up this part number on the various GM part sites, it shows up as an ATS-V fan, and the picture looks quite different than the fan you show. And for some reason none of the sites list parts for the 2016 CTS-V. If you get a chance to double-check that number, I'd appreciate it - looking to use the same fan on my latest upgrade.

Do you know if this is the fan Stielow used on JA? It looks pretty similar ...

Edit: The local dealer also lists this as the part number for CTS-V, so I went ahead and ordered one. I guess I should know those pictures won't always match up Sorry for any bother.

Scott

[4wheels]

Some of the service information for the 2016 CTS-V, ATS-V and Camaro refer to a fan controller but the controller is integral to the fan itself so the ECM is sending the control signal directly to the fan. No separate/serviceable controller exists as the DC brushless (BLDC) controller is built into the fan.

Originally Posted by andrewb70

Can you post a picture of the fan itself? Is this a 800 watt fan? Presumably a 2016 CTSV uses a PWM controller for that fan...

Andrew

[andrewb70]

Originally Posted by 4wheels

Some of the service information for the 2016 CTS-V, ATS-V and Camaro refer to a fan controller but the controller is integral to the fan itself so the ECM is sending the control signal directly to the fan. No separate/serviceable controller exists as the DC brushless (BLDC) controller is built into the fan.

So is the fan looking for a PWM- signal at the same 128Hz?

Andrew