Does anyone have their fan circuit working for them with the new 2.1.0 firmware? I tried the FIidle pin but does not work when trying to set it up in megatune.

 

Try setting it all up right, saving the MSQ and then re-burning the complete tune. I'm using the 2.1.0 firmware that Ken emailed me, its not even shared yet but it works pretty fricken good for everything else.

Btw my fan is on IAC1A

 

I thought 1AC1A was for an ignition output? can i use it for both?

 

IACxx were designed for IAC control as follows: (IAC1A, IAC1B) are one pair; (IAC2A , IAC2B) are the other pair. You can only use one from each pair for accessory control as the A/B pairs are hardwired to be in the opposite state from each other. If 1A is on, 1B is off. If 2A is on, 2B is off and vice versa.

-Mike

 

so even if i have the jumpers for pullups for spark on IAC1A,IAC1B,IAC2A,IAC2B i can still use one for fan control?

 

My apologies, I wasn't very clear on that. IACxx refers to the connector pins that are sometimes jumped from PCB connections JS0 through JS3. If the connector pins are used for something else (your ignition drive I presume!) you won't use those pins (should be 25, 27, 29 & 31). The CPU/PCB still has JS0 through JS3 that could be routed to one of the SPR connector pins (or other means) to control a fan. It's a little confusing and slang terms get tossed around. See http://www.megamanual.com/ms2/pcb.htm for details.

 

I'm PRETTY sure you will have your jumpers for pullups on LED17 LED18 and LED19, which are NOT the IACxx pins.

 

Ok now i understand. I was trying to see if somehow JS0-JS3 was connected to the out pins somehow. I will try that and see what happens thanks guys.

 

I can tell you right now that my fan is working on IAC1A using the 2.1.0 beta firmware....

Its gotta be your setup, settings or wiring.

 

ok i originally set it up at js11 or the knock input and its going out on spr1 or pin3. i think its working i was just confused on setting it up in megatune. its seeing 4.60-75V when passed the threshold i set. is that the way it works?

 

i did it according to the msextra2 manual and changed it to IA1(JS0) and i dont get anything from it now

 

I have to turn on my tuning laptop later I will take a shot of the only settings you need. I will also try to find the circuit and the pins I use.

 

hey jobro thanks. i think a picture of the setup will help a lot with this. also i left a reply to the thread "questionable transaction with rx72c". just wanted to know if you could find out whats up with my pump surge tank i bought off him. thanks jobro

 

hey jobro does js9 have to be to jumpered to s12 for the js0 to work?

 

also how many volts should i see before and after threshold at the output? and how do you have it wired to the relay?