MEGAsquirt A place to collectively sort out this megasquirt gizmo

Fan/Output4 always randomly blinking

Thread Tools
 
Search this Thread
 
Old 07-31-2012 | 12:53 PM
  #1  
ThunderFox's Avatar
Thread Starter
Junior Member
 
Joined: Mar 2012
Posts: 200
Total Cats: -12
From: Portugal
Default Fan/Output4 always randomly blinking

Following up on this topic, I've narrowed down the problem to the ECU today.

When fan is supposed to be off, the Output4/FAN indicator on TunerStudio keeps blinking at random, and with it, the relay clicks as if it is momentarily turned on (but not long enough for the fan to even turn).

This keeps burning my relays and I'm really bummed out by this problem


Any clue as to what could be causing this? Maybe an earthing problem?

Also, if I set LED18 to Warmup instead of Output4 and set X2/JS0 to Fan Control (as it should, because this controls the fan properly), then it's the Fan/W.Inj indicator that keeps blinking. It only does it with the engine ON and the fan OFF:

ECU On, Engine Off, Fan Off - nothing happens
ECU On, Engine On, Fan Off - indicator blinks randomly and fan relay clicks
ECU On, Engine On, Fan On - fan turns normally


I have set my fan to turn on at 0ēC just so it runs all the time and does not burn any relays anymore. But I need this problem solved either way... Any ideas?
Old 07-31-2012 | 12:56 PM
  #2  
Braineack's Avatar
Boost Czar
iTrader: (62)
 
Joined: May 2005
Posts: 79,818
Total Cats: 4,152
From: Chantilly, VA
Default

post screen captures of your settings page and the outputs page please.
Old 07-31-2012 | 01:09 PM
  #3  
ThunderFox's Avatar
Thread Starter
Junior Member
 
Joined: Mar 2012
Posts: 200
Total Cats: -12
From: Portugal
Default

There you go Brain!







Attached Thumbnails Fan/Output4 always randomly blinking-07312012_1.png   Fan/Output4 always randomly blinking-07312012_2.png   Fan/Output4 always randomly blinking-07312012_3.png  
Old 07-31-2012 | 01:12 PM
  #4  
ThunderFox's Avatar
Thread Starter
Junior Member
 
Joined: Mar 2012
Posts: 200
Total Cats: -12
From: Portugal
Default

Oh ----. I just noticed on the Tacho Output Pin page, it is set to X2 (JS0) (same as the fan).

I'll shoot myself if that was it.

/gone testing.
Old 07-31-2012 | 01:16 PM
  #5  
ThunderFox's Avatar
Thread Starter
Junior Member
 
Joined: Mar 2012
Posts: 200
Total Cats: -12
From: Portugal
Default

That was it. Crap.

It almost cost me my engine last week, save for the bunch of relays I've replaced...

I'm a moron :C
Old 07-31-2012 | 01:34 PM
  #6  
Braineack's Avatar
Boost Czar
iTrader: (62)
 
Joined: May 2005
Posts: 79,818
Total Cats: 4,152
From: Chantilly, VA
Default

settings aren't correct.


edit: okay yeah.
Old 07-31-2012 | 04:08 PM
  #7  
ThunderFox's Avatar
Thread Starter
Junior Member
 
Joined: Mar 2012
Posts: 200
Total Cats: -12
From: Portugal
Default

Which settings did you figure weren't correct by the way?

(apart from the fan on/off temperatures which I purposedly lowered)
Old 07-31-2012 | 04:12 PM
  #8  
Braineack's Avatar
Boost Czar
iTrader: (62)
 
Joined: May 2005
Posts: 79,818
Total Cats: 4,152
From: Chantilly, VA
Default

oh i was goign to say the temp values you used. or you had a conflict on something else.
Old 07-31-2012 | 08:44 PM
  #9  
ThunderFox's Avatar
Thread Starter
Junior Member
 
Joined: Mar 2012
Posts: 200
Total Cats: -12
From: Portugal
Default

No, those were meant to be that way for that time being, hehe!

Thanks a lot for your input Brain
Old 08-19-2014 | 07:39 PM
  #10  
festersays's Avatar
Junior Member
iTrader: (3)
 
Joined: Jan 2014
Posts: 177
Total Cats: 1
Default

Thread from the dead, but I'm having issues similar to this. I've got a MSPNP9697, loaded with the most updated basetune supplied from diyautotunes website. The only setting changes I've made were to the fan, and to my base timing.

I'm sure that the problem is that the tacho output is on X2, JS0 which in the output settings is shared with water inj/fan. I've tried to use the different options in the tacho output settings (outputs 2-5, output 10, etc) but only X2 actually yields a working tach.

I know this has got to be a simple setting that's not right, and I've done a decent amount of searching and I can only find diagrams about actually making a tach circuit. I just don't want to fry something by poking my nose into settings that I shouldn't. Attached is a screenshot of my settings.

Attached Thumbnails Fan/Output4 always randomly blinking-2daizdd.png  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
viriiguy
General Miata Chat
5
09-28-2015 08:39 PM
curly
MEGAsquirt
11
09-22-2015 12:54 PM
Squiblez
Build Threads
2
09-22-2015 11:17 AM
slomiata
MEGAsquirt
1
09-15-2015 07:28 PM




All times are GMT -4. The time now is 06:26 AM.