Okay, I'm really close to getting my MS2 working. I think I'm on my last stumbling block.
I've got an MS2 v3 board. I'm installing into a 93 Toyota Paseo with a 5E-FE engine. This uses the Toyota ESA ignition system.
Everything is working on the stim, and everything seems to be working on the car. EXCEPT, I'm not getting a spark signal out of the toyota ignitor.
I've got a good tach signal from the stock VR sensor. It reads ~280rpm while cranking.
I've jumped js10 directly to ign, this is working on the stim, but not in the car. The MS2 has a builtin 5v pullup, so if I understand it right, there should be no need for any other mods.
Any suggestions?
I can't fire the coil directly, or try to use a different ignitor, because I use this car for racing in a production class. The rules say I can use any ECU I want, but I can only use the stock inputs/outputs. So basically that means no modifications to the wiring harness. So I've got to use the Toyota ignitor.
Toyota ESA ignitor
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Read the manual to see if your question is answered there before posting. Many users will not reply if the answer is already available in the manual.
If your question is about troubleshooting, configuration, or tuning, you MUST include your processor type (MS-I or MS-II) and code version in your post. If your question is about PCB assembly or modifications, you must also include the main board version number (1.01, 2.2 or 3.0). For tuning/troubleshooting questions, please attached a datalog and your MSQ file to your post.
If you have questions about MS1/Extra or MS2/Extra code configuration or tuning, please post them at www.msextra.com Such questions posted here will be moved to: a temporary MSextra sub-forum, where they will be removed after 7 days
The full forum rules are here: Forum Rules, be sure to read them all regularly.
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Matt Cramer
- Super Squirter
- Posts: 2951
- Joined: Sat Jul 03, 2004 11:35 am
Re: Toyota ESA ignitor
Is there any way you can test the stock ECU's signal to the ignitor on an oscilloscope?
Re: Toyota ESA ignitor
I wish I could.
According to the electrical manual, IGT should be 4.5 - 5.5v while cranking and while idling. Im guessing it'll be a square wave of some sort.
According to the electrical manual, IGT should be 4.5 - 5.5v while cranking and while idling. Im guessing it'll be a square wave of some sort.
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red_baron
Re: Toyota ESA ignitor
Hi there,
I've got the ESA ignitor working fine on a V3.0 MS2.
I use the D14 output, and put it through a VB921 using a 5v pullup. The 5v supply should have a 220ohm resistor in it.
Settings are "single coil" "going low" and "d14".
This way the signal from the ECU stays high, which holds the VB921 open earthing the IGT line. Then when the ECU releases the IGT line shoots up to 5v (or so) allowign the ESA ignitor to fire.
In ignition settings, use "Fixed Duty, 50%".
Hope that helps!
Andy
I've got the ESA ignitor working fine on a V3.0 MS2.
I use the D14 output, and put it through a VB921 using a 5v pullup. The 5v supply should have a 220ohm resistor in it.
Settings are "single coil" "going low" and "d14".
This way the signal from the ECU stays high, which holds the VB921 open earthing the IGT line. Then when the ECU releases the IGT line shoots up to 5v (or so) allowign the ESA ignitor to fire.
In ignition settings, use "Fixed Duty, 50%".
Hope that helps!
Andy
Re: Toyota ESA ignitor
You're using the MS2Extra code, right?
Is there any way to set the dwell to fixed duty with the standard code?
Is there any way to set the dwell to fixed duty with the standard code?
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Matt Cramer
- Super Squirter
- Posts: 2951
- Joined: Sat Jul 03, 2004 11:35 am
Re: Toyota ESA ignitor
Yes, use the tips on the MSD page. Basically you set both dwell time and max spark duration to 25.5.
Re: Toyota ESA ignitor
K, I've tried using the 5v pull up on the high output circuit, and still not getting anything... hmm... I'm going back to triple checking my wiring.
Re: Toyota ESA ignitor
Okay, I've got this baby firing! It's not started yet, but now it's just a matter of tuning some tables.
I appreciate the help folks. It turns out it was my wiring. I had created my own wiring diagram for my pigtail, and accidentally mixed up IGT and IGF. So everytime I checked it against my diagram it all looked good, until I looked a the factory wiring diagrams again...
I've got to say that I'm really happy with the MS so far. This is my first MS project, and I've had a lot of fun putting it all together. I've only had a couple of problems, and they've all turned out to be my own fault. There's been no issues with the hardware itself at all.
Of course, you know what they say, curiousity killed the cat. Now that I've figured out what the problem was, I'm not going to be able to get a good night sleep until I set this thing back to the way I originally had it, to see if it works that way now...
I appreciate the help folks. It turns out it was my wiring. I had created my own wiring diagram for my pigtail, and accidentally mixed up IGT and IGF. So everytime I checked it against my diagram it all looked good, until I looked a the factory wiring diagrams again...
I've got to say that I'm really happy with the MS so far. This is my first MS project, and I've had a lot of fun putting it all together. I've only had a couple of problems, and they've all turned out to be my own fault. There's been no issues with the hardware itself at all.
Of course, you know what they say, curiousity killed the cat. Now that I've figured out what the problem was, I'm not going to be able to get a good night sleep until I set this thing back to the way I originally had it, to see if it works that way now...
Re: Toyota ESA ignitor
This is sweet! Okay, she's running great now.
For future reference if anyone is interested, the configuration that I've got which is working using all the stock and nothing but stock vr sensor/wiring/sensors/ignitor/etc are:
Using the VR input circuit with no mods, only have to tune the resistors just right. Interestingly enough the resistance that works on the stim does not work on the car and vice versa.
High output ign circuit with 220ohm pullup resistor, r43 jumpered, r57 removed
Rising Edge
Trigger Rise
Standard charge
Going low (normal)
It's running great using the generated ve table and following the directions on this page for making a spark table.
I think my o2 sensor is wonky, so I can't really start tuning til I replace that. I'm probably getting a JAW wideband...
The only thing which I don't have hooked up yet is the idle controller. Can anybody provide any information about the Toyota 2 wire idle valve in this car? What do I need to do to make that work with MS2? All I know is that it's labelled DISC in the wiring manual.
I'm also thinking of getting creative about what else I can do with some of the stock wiring that's not currently used. For example, I'm thinking I can turn the check engine light into a shift light. I could also use the stock MAP sensor for constant baro correction... Which is actually important for the rally racing that I do, sometimes there's some big elevation changes throughout the day.
For future reference if anyone is interested, the configuration that I've got which is working using all the stock and nothing but stock vr sensor/wiring/sensors/ignitor/etc are:
Using the VR input circuit with no mods, only have to tune the resistors just right. Interestingly enough the resistance that works on the stim does not work on the car and vice versa.
High output ign circuit with 220ohm pullup resistor, r43 jumpered, r57 removed
Rising Edge
Trigger Rise
Standard charge
Going low (normal)
It's running great using the generated ve table and following the directions on this page for making a spark table.
I think my o2 sensor is wonky, so I can't really start tuning til I replace that. I'm probably getting a JAW wideband...
The only thing which I don't have hooked up yet is the idle controller. Can anybody provide any information about the Toyota 2 wire idle valve in this car? What do I need to do to make that work with MS2? All I know is that it's labelled DISC in the wiring manual.
I'm also thinking of getting creative about what else I can do with some of the stock wiring that's not currently used. For example, I'm thinking I can turn the check engine light into a shift light. I could also use the stock MAP sensor for constant baro correction... Which is actually important for the rally racing that I do, sometimes there's some big elevation changes throughout the day.