Fan Activation on MSPNP2
01-19-2021, 02:16 AM
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Fan Activation on MSPNP2
I imagine this is a simple fix, however, it's escaping me.
I am in the process of starting the motor on an 8-month long rebuild and currently, my cooling fan comes on when the key is turned. I already have eliminated the relay and wiring as issues, which basically just leaves me with ECU/Tune. The MSPNP2 was installed and ran correctly before the rebuild, however, think I may have accidentally adjusted something in the tune unknowingly at some point.
When trying to connect to the Megasquirt this week, I got a config error that was not letting tunerstudio connect and causing all sorts of incorrect data readings. I found that "output1" was enabled in programable outputs (with coolant channel conditions) and disabling this got rid of the config error and allowed tunerstudio to connect. After reading the MSPNP documentation, I believe output1 = ALED, and my installation of Toyota COPs and the subsequent settings I changed may have conflicted with this output somehow (now is running wasted COP, but incorrectly setup full seq. COP earlier this week before realizing I don't have 4 ign. drivers). Can anyone a bit more experienced with these settings and outputs take a glance at my tune file and let me know if anything stands out as conflicting?
EDIT: Don't believe I've ever changed any of the ECU jumpers from how they came from DIYautotune
I am in the process of starting the motor on an 8-month long rebuild and currently, my cooling fan comes on when the key is turned. I already have eliminated the relay and wiring as issues, which basically just leaves me with ECU/Tune. The MSPNP2 was installed and ran correctly before the rebuild, however, think I may have accidentally adjusted something in the tune unknowingly at some point.
When trying to connect to the Megasquirt this week, I got a config error that was not letting tunerstudio connect and causing all sorts of incorrect data readings. I found that "output1" was enabled in programable outputs (with coolant channel conditions) and disabling this got rid of the config error and allowed tunerstudio to connect. After reading the MSPNP documentation, I believe output1 = ALED, and my installation of Toyota COPs and the subsequent settings I changed may have conflicted with this output somehow (now is running wasted COP, but incorrectly setup full seq. COP earlier this week before realizing I don't have 4 ign. drivers). Can anyone a bit more experienced with these settings and outputs take a glance at my tune file and let me know if anything stands out as conflicting?
EDIT: Don't believe I've ever changed any of the ECU jumpers from how they came from DIYautotune
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01-19-2021, 02:44 AM
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Some further reading suggests that output1 was and is supposed to be used as a spark output, which is very odd because I don't recall copying settings, adjusting programable outputs, or anything else that would cause it to be enabled for fan activation and cause my config error. If this is the case, glad I chose not to use testmode on the programable outputs...
I'll check another day, but it sounds like output2 is the correct location for fan activation which has been unused on my tune. Very odd but I'm hoping it's as simple as swapping my output1 -> output2 settings.
I'll check another day, but it sounds like output2 is the correct location for fan activation which has been unused on my tune. Very odd but I'm hoping it's as simple as swapping my output1 -> output2 settings.
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01-19-2021, 10:37 PM
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Ok, I'm actually at a total loss for what's going on here.
I just started the motor for the first time tonight (Seeing 60psi oil after hand building an engine is a dopamine rush) but noticed while logging that the AC output is red and crossed-out in TS as if that output has been overwritten as well. I tried to activate output2 and use it as the fan activation output, but enabling it gave me config errors and required me to disable it just like output1.
Clearly, things have somehow been overwritten or messed up to some degree, and at no point was I changing settings I was unfamiliar with, so I'm really at a loss for why my Fan, AC, and who knows what other outputs are not working. If nobody has any ideas yet, could I get someone to share their working tune that runs wasted COP so I can verify my settings?
I just started the motor for the first time tonight (Seeing 60psi oil after hand building an engine is a dopamine rush) but noticed while logging that the AC output is red and crossed-out in TS as if that output has been overwritten as well. I tried to activate output2 and use it as the fan activation output, but enabling it gave me config errors and required me to disable it just like output1.
Clearly, things have somehow been overwritten or messed up to some degree, and at no point was I changing settings I was unfamiliar with, so I'm really at a loss for why my Fan, AC, and who knows what other outputs are not working. If nobody has any ideas yet, could I get someone to share their working tune that runs wasted COP so I can verify my settings?
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01-24-2021, 02:42 PM
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Ok, had some time to come back to this and am seeing that some people running wasted COP on microsquirt have had the same issue. I'm fairly sure it an issue with running wasted COP and that using 4 spark outputs instead of 2.
It seems this would be a common issue but can't seem to find anyone else running into it on an MSPNP2. Guessing I just need to return to wasted spark to retain my AC/Fan outputs? I should probably check what my custom harness wiring supports too since I wasn't the one to wire it...
It seems this would be a common issue but can't seem to find anyone else running into it on an MSPNP2. Guessing I just need to return to wasted spark to retain my AC/Fan outputs? I should probably check what my custom harness wiring supports too since I wasn't the one to wire it...
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01-25-2021, 09:37 AM
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As you have discovered, you won't have enough outputs for seq spark and fan control.
Wasted COP uses 4 ignition drivers and fires in a wasted pattern. You want to be using wasted spark which is 2 drivers. Obviously you need to make sure it is wired this way, which it looks like you have discovered.
Wasted COP uses 4 ignition drivers and fires in a wasted pattern. You want to be using wasted spark which is 2 drivers. Obviously you need to make sure it is wired this way, which it looks like you have discovered.
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01-25-2021, 08:27 PM
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Yep, really surprised I didn't find this info directly with all the searches I did and MS documentation I read.
Surprisingly, hardly any threads seem to mention that when you swap to COP, you leave ignition set to wasted spark instead of switching to COP or wasted COP as you would intuitively think.
Hopefully, people run into this thread if they're left scratching their heads like me
Wasted COP is a setting for firing 4 spark drivers in a wasted config, this is why you get a config error if you try and use it as you are using the other two outputs somewhere. It is identical in function to the wasted spark setting, although it will not work inside the megasquirt the same.
Your MS2 will do sequential ignition, but then it won't do AC idle up or fan control. If you were to wire it up that way you would select coil on plug for sequential ignition. If you wanted to test wasted spark against sequential you could pick the wasted COP setting, then you wouldn't need to wire the spark outputs back together.
Your MS2 will do sequential ignition, but then it won't do AC idle up or fan control. If you were to wire it up that way you would select coil on plug for sequential ignition. If you wanted to test wasted spark against sequential you could pick the wasted COP setting, then you wouldn't need to wire the spark outputs back together.
Hopefully, people run into this thread if they're left scratching their heads like me
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01-26-2021, 07:41 AM
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I learned this from a 2015 thread, there are a couple others. This one in particular is a good read: What is Waste COP vs Wasted Spark . Brain's #14 post sums up the answer.
Good luck with your build, when I went turbo I was also on MS2 and ID1000s, it worked well. I just wanted more sensors etc. via CAN and the MS2 CAN was limited.
Good luck with your build, when I went turbo I was also on MS2 and ID1000s, it worked well. I just wanted more sensors etc. via CAN and the MS2 CAN was limited.
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