can you turn Ls1 fans on with ls1 edit?

the flex a lite VSC is a piece of ****!

I thought that the wire is on the pcm but needs activated with edit?

 

You have to add the wire AND activate it in LS1 Edit. It works great!

 

DO YOU NEED A RELAY SWITCH OR DOES THE COMPUTER DO IT WITH EDIT?

 

You still need a relay but the PCM turns on the relays for the fans and you can have high and low speed. With LS1 edit you can set the temperature for the low speed and the high speed fans.

 

You can only use the primary fan setting on the trucks. You can daisy-chain relays and run as many fans as you like, but they all have to be controlled by the primary fan control only.

 

Which color and pin is it that a wire is added? What code is also turned on. I am curious also.

 

It's the BLUE PCM connector, position 42.

In Edit you choose "Aux Fan" and then edit the turn-on and turn-off temperatures to whatever you desire.

 

any chance the pcm will turn them on and off for the airconditoner if you go that route or do you still need to address that?

 

Have not been able to get the PCM to respond to the A/C inputs and turn the fan on; still looking for a software bit there someplace; BUT, what does work instead is to take one more small relay (real low current is fine), and let it control the fan relay when the A/C is turned on, and this works out great!

Using the numbering from a Bosch style relay: you tie 86 and 87 together and hook to ground. Hook 85 to the green A/C wire that goes to the compressor; and tee 30 into the same wire you have coming from the PCM (BLUE 42).

Bingo! Whenever you turn on the A/C, the A/C signal turns on the little relay, which then turns on the fan relay!

Try it, works great!

 

John-I have had mine wired up exactly like you are describing for several months now and the only "quirk" is that on cooler days or days when you run the defrost and the compressor is cycling so is the fan---on,off,on,off,on,off etc...... You get used to it but it still bugs me a little.