MS PNPPRO mx5 90-93 vvt swapped

[BEdrifting]

Dear MS owners,

I'm in the end phase of my 91 vvt swapped miata.
However the megasquirt doesn't connect to my computer. I use the usb to seriel adapter from DIYautotune and I'm sure I have the right driver. The portchecker finds one valid port.

When contacting the DIY autotune helpdesk they asked me to measure the voltage on the F1 and F3 fuse in the MS3 pro board. F1: 11.7v , F2: 0v and F3 ..... 0v
Whats wrong ?

4 leds:
1: is on - so ecu gets power
2: off
3: off
4: is on

- It's a '03 1.8 vvt engine
-I'm ussing the '03 TPS
-'03 ignition with na harness changes but I'm not fully sure If I did this step correctly.
- the trans of the donor car.

Sent from my SM-G935F using Tapatalk

[prof315]

You popped the 5VREF fuse. No 5V means the ECU won't do anything. Recheck your TPS wiring

[BEdrifting]

You popped the 5VREF fuse. No 5V means the ECU won't do anything. Recheck your TPS wiring

I used the tps of of the 03 vvt engine. Is it possible the fuse poped because I didn't install the variable tps jumper? or wil the ms read it as a na tps ?

Thank you for your help and the response time is awesome aswell

[prof315]

You popped the 5VREF fuse. No 5V means the ECU won't do anything. Recheck your TPS wiring

I used the tps of of the 03 vvt engine. Is it possible the fuse poped because I didn't install the variable tps jumper? or wil the ms read it as a na tps ?

Thank you for your help and the response time is awesome aswell

Yes it is possible that not installing the jumper blew the fuse. I'd still double-check the wiring.

[BEdrifting]

Yes it is possible that not installing the jumper blew the fuse. I'd still double-check the wiring.

I checked the wiring, it was wired up correctly. I installed the j6 jumper on the j4 jumper. With these things done I still have no voltage. I measured the pins where the fuse sits in. One probe on a pin and one probe on a ground. Tried both pins and still got no power running through. So I suppose the fuse was not the problem.
What might be going on?

Very kind regards,
Cedric

[BEdrifting]

UPDATE:

After some fideling around I got 5v by switching the 2 fuses (F1 and F2) F1 has 11.7V amd F2 has 4.9V.
The only thing now is that I do not get a tps reading in tuner studio. And after loading the basemap for the vvt engine tha car won't crank anymore. and the ecu start flickering. Like its turning off and on realy fast.

Why is this ?

Very kind regards,
cedric

[Matt Cramer]

Make sure you've loaded the 2001-2005 base map, not the '90-'93 map. Do you have a stable connection to the laptop while cranking?

[BEdrifting]

Make sure you've loaded the 2001-2005 base map, not the '90-'93 map. Do you have a stable connection to the laptop while cranking?

It cranked with the map that came with the pnp pro with no problem. When trying to crank with the newer firmware and 01 to 05 base map I can hear a ticking sound from the area of the steering wheel and the pnppro flashes the first third and fourth light.

[Matt Cramer]

Make sure you've loaded the 2001-2005 base map, not the '90-'93 map. Do you have a stable connection to the laptop while cranking?

It cranked with the map that came with the pnp pro with no problem. When trying to crank with the newer firmware and 01 to 05 base map I can hear a ticking sound from the area of the steering wheel and the pnppro flashes the first third and fourth light.

[BEdrifting]

These are the debug file of TS and the msq I use.
I also noticed that my battery has lowvoltage. Its at 9.85v now

edit: firmware version is 1.5.0, tune version is on 1.4.3

[Matt Cramer]

The debug file is for troubleshooting TunerStudio itself. I need a data log from the Data Logging menu.

[BEdrifting]

The debug file is for troubleshooting TunerStudio itself. I need a data log from the Data Logging menu.

I will get it within half an hour Just got back from work.

[BEdrifting]

Update:

The car cranks again, the battery was to low to do it before.
There is no ignition when holding the sparkplug wires against the block. I used the mx5 vvt megathread for this but I don´t fully understand what has to be done in order to bypass the ignitor. if someone can clearify this it would be awesome.
There is also no 5v at the end of the TPS wire, the wiring is correct I triple checked and all wires and the volt meter beeps when measuring through.

In the attachment you can find a datalog from the most recent startup attempt

thank you all for the amazing help you give so far.

Kind regards,
cedric

[prof315]

So have you checked F1 and F2 for continuity? It still sounds to me like either the VTPS jumper isn't installed or F2 is blown.

[BEdrifting]

So have you checked F1 and F2 for continuity? It still sounds to me like either the VTPS jumper isn't installed or F2 is blown.

Yes both fuses have the appropriate voltage. I will try and run the ms without the jumper. When I updated the firmware I resetted the jumper settings.

[BEdrifting]

No luck so far. Car still crancks. The tps acted a bit weird when calibrating I got 0 and 1. On wide open it put 1. So it basicly is a standard TPS now.
I still assume that the ignition system is not working but I can`t seem to figure out how. The 12v on both plug do get the 12 volts so it has to be the triggers. Which narrows it down to the igniter area.
https://drive.google.com/open?id=0B6lwV ... ZVcW16ckJr

Kind Regards,
Cedric

[Matt Cramer]

Check to make sure the spark outputs have 0 volts with the key on and engine off, and check what happens when you try spark test mode.

[BEdrifting]

Check to make sure the spark outputs have 0 volts with the key on and engine off, and check what happens when you try spark test mode.

When testing the sparkplugs usig the test mode I have sparks on all of them. I didn't wire the injectors for sequential and its still in batch fire. Maybe that might be the issue ?

Thank you for your help so far

Kind regards,
cedric

[BEdrifting]

Dear forum members,

I removed the fuel rail from the engine and tested each injector if it sprayed using the testmode. All of them do so the wiring is not the issue. BUT when checking the injectors right after I removed the rail I could see that injectors 1 and 3 were dry and 2 and 4 were wet.

Also when I turn the car to on I can hear the fuel pump. But the pressure is only 3.6 kpa according to the guage in tunerstudio. is this normal ?

I'm also confused on the "RPM not synced" warning on the bottom.

I'm changing the sparkplugs regardless for safety today aswell.

Very kind regards,
Cedric

[prof315]

No Your fuel pressure should be 300 Kpa or so.