Megasquirt vr circuit
06-10-13, 03:44 PM
#4
Senior Member
Thread Starter
so if I have mine built like the 2nd one I have to take out the 300 ohm resistor the 0.1uf cap that goes to pin 9 the 82k resistor and the 0.01uf cap that goes to pin 14 and add a 0.01uf cap in front of the 18k resistor.
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06-15-13, 10:26 AM
#10
Engine, Not Motor
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I find it curious that the leftmost diagram in the list with the red and green optional wiring is taken directly from my writeup, yet the bulk of the writeup which explains the circuit has been ignored.
How To Megasquirt Your 2nd Gen RX-7: Building and/or Modding The Megasquirt
How To Megasquirt Your 2nd Gen RX-7: Building and/or Modding The Megasquirt
08-16-13, 09:33 AM
#16
08-16-13, 10:19 AM
#17
MegaSquirt Mod
I had a minute to look these up:
11 is "too few teeth before second trigger" so it means there's noise on the 2nd trigger.
17 is "second trigger not found when expected" so it usually means there's noise on the 2nd trigger, though it can sometimes indicate noise on the primary as well.
11 is not fatal, we notify of a problem and keep the engine running without losing sync. The idea there is that as long as we do see the 2nd trigger when we thought we should, we should keep running and ignore the "noise."
17 is fatal. This only happens when we don't see the 2nd trigger when we expected. So there were too many teeth before seeing a 2nd trigger, or the signal we thought was the real 2nd trigger was noise. In this case we reset the ignition code and you lose sync, and if you're idling, your engine probably stalls.
This is the list of documented reasons (there are far more than this though, but unfortunately they're not even documented in the code. Most of them have to do with the non-generic wheel modes, such as neon, or 36-2-2-2):
0 = no problem
1 = init error
2 = missing tooth at wrong time
3 = too many teeth before missing tooth (last)
4 = too few teeth before missing tooth (last)
5 = 1st tooth failed test
6 = nonsense input (last)
7 = nonsense input (mid)
8 = too many teeth before missing tooth (mid)
9 = too few teeth before missing tooth (mid)
10 = too many teeth before end of sequence
11 = too few teeth before second trigger
12 = too many sync errors
13 = dizzy wrong edge
14 = trigger return vane size
15 = EDIS
16 = EDIS
17 = second trigger not found when expected
18 = poll level wrong phase at re-check
11 is "too few teeth before second trigger" so it means there's noise on the 2nd trigger.
17 is "second trigger not found when expected" so it usually means there's noise on the 2nd trigger, though it can sometimes indicate noise on the primary as well.
11 is not fatal, we notify of a problem and keep the engine running without losing sync. The idea there is that as long as we do see the 2nd trigger when we thought we should, we should keep running and ignore the "noise."
17 is fatal. This only happens when we don't see the 2nd trigger when we expected. So there were too many teeth before seeing a 2nd trigger, or the signal we thought was the real 2nd trigger was noise. In this case we reset the ignition code and you lose sync, and if you're idling, your engine probably stalls.
This is the list of documented reasons (there are far more than this though, but unfortunately they're not even documented in the code. Most of them have to do with the non-generic wheel modes, such as neon, or 36-2-2-2):
0 = no problem
1 = init error
2 = missing tooth at wrong time
3 = too many teeth before missing tooth (last)
4 = too few teeth before missing tooth (last)
5 = 1st tooth failed test
6 = nonsense input (last)
7 = nonsense input (mid)
8 = too many teeth before missing tooth (mid)
9 = too few teeth before missing tooth (mid)
10 = too many teeth before end of sequence
11 = too few teeth before second trigger
12 = too many sync errors
13 = dizzy wrong edge
14 = trigger return vane size
15 = EDIS
16 = EDIS
17 = second trigger not found when expected
18 = poll level wrong phase at re-check
Last edited by muythaibxr; 08-16-13 at 10:32 AM.
08-16-13, 05:29 PM
#18
Senior Member
Thread Starter
fix the problem with a 10 ohms resistor on the second trigger signal and closing the gap on the sensor know the car rev to 9k with out a problem.thanks
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