E38 PCM pinout for Fan

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Sep 22, 2015 | 12:14 PM

tdishon

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From: Phoenix, AZ

E38 PCM pinout for Fan

Does anyone have a diagram of where the pinout for the cooling fan relay is located?
I think it is Pin 17, but not sure which of the two harnesses it is and where it is located. Also is the relay control pinout negative?
Thanks for any help

Sep 23, 2015 | 02:38 AM

Bubba68ss

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pin 17 for high speed and pin 58 for low speed

Sep 23, 2015 | 11:43 AM

tdishon

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From: Phoenix, AZ

Ok, Pin 17 it is since I have a single fan on this car(62 corvette).
Is it a negative output from pin 17 for the relay or positive?

Sep 24, 2015 | 08:06 PM

Grip

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From: Santa Rosa, Ca

Check www.lt1swap.com. He has the pin outs. The signal is negative. He has a diagram for wiring the fan relay too.

Sep 25, 2015 | 11:12 AM

tdishon

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I think since I only have one fan that I should be connecting to pin 58.

Oct 15, 2015 | 09:18 PM

Grip

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From: Santa Rosa, Ca

Have you got it up and running? I have read that the tables for controlling fan set points can be confusing with the E38.

Oct 16, 2015 | 07:19 PM

Project GatTagO

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From: Little Austin

You can also use PWM fan control with the E38 and a C6 fan controller. I would do this for sure!

Tons of info here:

http://www.lateral-g.net/forums/showthread.php4?t=40215

Andrew

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