Andrew7DG
15+ Year Contributor
- 162
- 0
- Oct 11, 2004
-
Rosemount,
Minnesota
I am hoping someone that has already done the Megasquirt 2 modifications will chime in.
I took the plunge and bought the Megasquirt 2 system (msII and V3.0) and have been assembling it.
Everything is working out and testing out great. It has been a wonderful winter project to keep me busy since I can't work on my car just yet.
however
I am having problems with the cas 2 trigger input
MS2-Extra Miata 4g63 Manual
I bought the 4n25 pin from DIYautotune and I bought the rest of the parts from radio shack.
after I assembled it, the ECU wasn't seeing the 2nd trigger input still
For a while I thought megatune version was wrong and msextra was wrong, also thought for a while that the JimStim wasn't outputting the correct signal
However after lots of testing I found out that the 4n25 pin wasn't sending the signal over like it should. I tested this using one of the LED lights on the JimStim and a jumper.
The 4n25 pin is seeing a signal on pin 1, 2 - a solid signal on 4 but no signal transfer onto 5 like it should be doing. (on the other 4n25 pin, 4 is solid and 5 is outputting the signal)
So now I am trying to figure out what in this setup I am doing wrong. This is kind of my first attempt at electronics and I am learning a lot but something isn't working at this stage...
So what can I look to that might be malfunctioning? Assembly? faulty 4n25 (but it is brand new so I don't really think that should be the problem)?
I am kind of looking toward the .01 uF Cap I bought from radio shack. it is kind of bulky compaired to C11 which has the same rating. I know the setup should work because there is another 4n25 pin setup built into the board that is reading the 4 slot sensor.
Does pin 3 or 6 on the 4n25 need to be hooked up to anything?
I took the plunge and bought the Megasquirt 2 system (msII and V3.0) and have been assembling it.
Everything is working out and testing out great. It has been a wonderful winter project to keep me busy since I can't work on my car just yet.
however
I am having problems with the cas 2 trigger input
MS2-Extra Miata 4g63 Manual
I bought the 4n25 pin from DIYautotune and I bought the rest of the parts from radio shack.
after I assembled it, the ECU wasn't seeing the 2nd trigger input still
For a while I thought megatune version was wrong and msextra was wrong, also thought for a while that the JimStim wasn't outputting the correct signal
However after lots of testing I found out that the 4n25 pin wasn't sending the signal over like it should. I tested this using one of the LED lights on the JimStim and a jumper.
The 4n25 pin is seeing a signal on pin 1, 2 - a solid signal on 4 but no signal transfer onto 5 like it should be doing. (on the other 4n25 pin, 4 is solid and 5 is outputting the signal)
So now I am trying to figure out what in this setup I am doing wrong. This is kind of my first attempt at electronics and I am learning a lot but something isn't working at this stage...
So what can I look to that might be malfunctioning? Assembly? faulty 4n25 (but it is brand new so I don't really think that should be the problem)?
I am kind of looking toward the .01 uF Cap I bought from radio shack. it is kind of bulky compaired to C11 which has the same rating. I know the setup should work because there is another 4n25 pin setup built into the board that is reading the 4 slot sensor.
Does pin 3 or 6 on the 4n25 need to be hooked up to anything?