MEGAsquirt A place to collectively sort out this megasquirt gizmo

MS3+MS3x Lost Fan Control

Thread Tools
 
Search this Thread
 
Old 09-30-2014, 03:19 PM
  #1  
SADFab Destructive Testing Engineer
Thread Starter
iTrader: (5)
 
aidandj's Avatar
 
Join Date: Apr 2014
Location: Beaverton, USA
Posts: 18,642
Total Cats: 1,866
Default MS3+MS3x Lost Fan Control

To start things off I have my fan output wired to INJG as in Westfields build guide. And it was working. Randomly it stopped working and the fan has been always on ever since. As soon as the key is on the fan is on.

List of things I have checked.

-Fan Relay Clicks when unplugged and plugged.
-Fan does not turn on when ECU is not connected.
-Thermoswitch disconnected

Attached is my msq. I'm assuming something on the board is fried, or I have a setting wrong. Any input is appreciated.

ADJ
Attached Files
File Type: msq
2014-09-30_12.17.53.msq (218.2 KB, 65 views)
aidandj is offline  
Old 09-30-2014, 03:38 PM
  #2  
Elite Member
iTrader: (10)
 
Reverant's Avatar
 
Join Date: Jun 2006
Location: Athens, Greece
Posts: 5,977
Total Cats: 356
Default

Injector driver is dead.
Reverant is offline  
Old 09-30-2014, 03:39 PM
  #3  
SADFab Destructive Testing Engineer
Thread Starter
iTrader: (5)
 
aidandj's Avatar
 
Join Date: Apr 2014
Location: Beaverton, USA
Posts: 18,642
Total Cats: 1,866
Default

What would have caused this?
aidandj is offline  
Old 09-30-2014, 03:49 PM
  #4  
SADFab Destructive Testing Engineer
Thread Starter
iTrader: (5)
 
aidandj's Avatar
 
Join Date: Apr 2014
Location: Beaverton, USA
Posts: 18,642
Total Cats: 1,866
Default

Once again my problem stems from my failures, not the failures of the components.

Somehow I missed this when I was putting it together. Fan output shorted straight to ground...

Attached Thumbnails MS3+MS3x Lost Fan Control-2ebu1cw.jpg  
aidandj is offline  
Old 09-30-2014, 03:50 PM
  #5  
Elite Member
iTrader: (10)
 
Reverant's Avatar
 
Join Date: Jun 2006
Location: Athens, Greece
Posts: 5,977
Total Cats: 356
Default

These drivers are known to randomly fail.
Reverant is offline  
Old 09-30-2014, 03:51 PM
  #6  
SADFab Destructive Testing Engineer
Thread Starter
iTrader: (5)
 
aidandj's Avatar
 
Join Date: Apr 2014
Location: Beaverton, USA
Posts: 18,642
Total Cats: 1,866
Default

Originally Posted by Reverant
These drivers are known to randomly fail.
Check my reply above.
aidandj is offline  
Old 09-30-2014, 03:54 PM
  #7  
Elite Member
iTrader: (10)
 
Reverant's Avatar
 
Join Date: Jun 2006
Location: Athens, Greece
Posts: 5,977
Total Cats: 356
Default

Looks good lol.
Reverant is offline  
Old 09-30-2014, 05:37 PM
  #8  
Elite Member
iTrader: (1)
 
Chiburbian's Avatar
 
Join Date: Feb 2008
Location: Loganville, GA
Posts: 2,331
Total Cats: 202
Default

If an injector driver fails on the expander board is the only solution to buy a new board? I have already replaced so many items on my megasquirt that I am afraid of this happening to me. If so, I will have replaced nearly everything on my MS3 at least once...
Chiburbian is offline  
Old 09-30-2014, 08:32 PM
  #9  
Ben
Supporting Vendor
iTrader: (33)
 
Ben's Avatar
 
Join Date: Jul 2006
Location: atlanta-ish
Posts: 12,659
Total Cats: 134
Default

Originally Posted by Chiburbian
If an injector driver fails on the expander board is the only solution to buy a new board? I have already replaced so many items on my megasquirt that I am afraid of this happening to me. If so, I will have replaced nearly everything on my MS3 at least once...
They are under warranty for 1 year. If not under warranty (and if you are unable to handle the re-work/soldering yourself), the easiest solution is to buy a new card.

The VNDs fail pretty rarely actually. The only exception is there seems to have been a small bad batch of them about 4+ years ago.
__________________
Chief of Floor Sweeping, DIYAutoTune.com & AMP EFI
Crew Chief, Car Owner & Least Valuable Driver, HongNorrthRacing

91 Turbo | 10AE Turbo | 01 Track Rat | #323 Mazda Champcar

Originally Posted by concealer404
Buy an MSPNP Pro, you'll feel better.
Ben is offline  
Old 09-30-2014, 10:33 PM
  #10  
SADFab Destructive Testing Engineer
Thread Starter
iTrader: (5)
 
aidandj's Avatar
 
Join Date: Apr 2014
Location: Beaverton, USA
Posts: 18,642
Total Cats: 1,866
Default

Originally Posted by Ben
They are under warranty for 1 year. If not under warranty (and if you are unable to handle the re-work/soldering yourself), the easiest solution is to buy a new card.

The VNDs fail pretty rarely actually. The only exception is there seems to have been a small bad batch of them about 4+ years ago.
Are they surface mount or through hole?
aidandj is offline  
Old 10-01-2014, 01:52 AM
  #11  
Elite Member
iTrader: (10)
 
Reverant's Avatar
 
Join Date: Jun 2006
Location: Athens, Greece
Posts: 5,977
Total Cats: 356
Default

SMD.
Reverant is offline  
Old 10-01-2014, 07:57 AM
  #12  
Boost Czar
iTrader: (62)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 79,493
Total Cats: 4,080
Default

That's exactly why I never opted to build MS3 harnesses like Frank's writeup. As much as I like the solution, I hate it.

The driver is $1.65 at digikey or mouser. it's probably the easiest SMD component to replace; or just move the output to any spares you might have.
Braineack is offline  
Old 10-01-2014, 01:25 PM
  #13  
Ben
Supporting Vendor
iTrader: (33)
 
Ben's Avatar
 
Join Date: Jul 2006
Location: atlanta-ish
Posts: 12,659
Total Cats: 134
Default

Originally Posted by aidandj
Are they surface mount or through hole?
Surface, but it's easy to work with as it's a large component with large pins.
__________________
Chief of Floor Sweeping, DIYAutoTune.com & AMP EFI
Crew Chief, Car Owner & Least Valuable Driver, HongNorrthRacing

91 Turbo | 10AE Turbo | 01 Track Rat | #323 Mazda Champcar

Originally Posted by concealer404
Buy an MSPNP Pro, you'll feel better.
Ben is offline  
Old 10-01-2014, 10:06 PM
  #14  
SADFab Destructive Testing Engineer
Thread Starter
iTrader: (5)
 
aidandj's Avatar
 
Join Date: Apr 2014
Location: Beaverton, USA
Posts: 18,642
Total Cats: 1,866
Default

Originally Posted by Braineack
That's exactly why I never opted to build MS3 harnesses like Frank's writeup. As much as I like the solution, I hate it.

The driver is $1.65 at digikey or mouser. it's probably the easiest SMD component to replace; or just move the output to any spares you might have.
It seems a lot better in concept than it does in practice. It limits your mounting possibilities, and really crowds the case. Oh well it was a good experience. The next one I build will use a DB-37 for sure.
aidandj is offline  
Old 10-02-2014, 08:27 AM
  #15  
Boost Czar
iTrader: (62)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 79,493
Total Cats: 4,080
Default

I would even rather drill a hole through the case and run the wires out the db37 and then back into the case to the connector before I desoldered the expander board like that.
Braineack is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
StratoBlue1109
Miata parts for sale/trade
21
09-30-2018 01:09 PM
russian
Miata parts for sale/trade
6
10-08-2015 03:01 PM
Voltwings
Cars for sale/trade
0
09-27-2015 06:40 PM



Quick Reply: MS3+MS3x Lost Fan Control



All times are GMT -4. The time now is 07:23 AM.