The MegaSquirt Project has experienced explosive growth other the years, with hundreds of new MS installations occurring every week - a phenomenal success! MegaSquirt has been successfully used in all aspects of Internal Combustion engine applications including R&D, Industry, Race, and Research. The MS project has transformed itself from a simple R&D project into a full-featured mature engine control system. To reflect this the support structure has also changed to meet the needs of MegaSquirt Users.
Moving forward, the R&D forums for MegaSquirt project are in a read-only mode - no new forum posts are accepted.
However the forums will remain available for view, they still contain a wealth of information on how MegaSquirt works, how it is installed and used. Feel free to search the forums for information, facts, and overview.While the R&D forum traffic has slowed in recent years, this is not at all a reflection of Megasquirt users, which continue to grow year after year. What has changed is that the method of MegaSquirt support today has rapidly moved to Facebook, this is where the vast majority of interaction is happening now. For those not on Facebook the msextra forums is another place for product support. Finally, for product selection assistance, all of the MegaSquirt vendors are there to help you select a system, along with all of the required pieces to make it complete.
For engine experimenters, the MicroSquirt® PCB is offered in a module format with enhanced capabilities to be plugged into other boards. This is the place to discuss the MicroSquirt Module.
Ok, so I think I screwed up!
The wiring instructions on the Micro Squirt site confused me, the note under the wiring diagram says "(Note that ABC are swapped from the previous diagram!)" and doesn't say which one is correct?
So, I think I wired the VERF to the Map sensors ground wire?
Now, megatune says the controllers voltage is low?
If you are getting a response from MT it is unlikely the miswiring caused any damage. Plus the ecu is protected by a polyfuse which returns to operation as soon as the miswiring is corrected. Are you using a microsquirt module or a fully assembled microsquirt ?
The low battery voltage from MT may be because your battery voltage is really low - are you using a 9 V battery, which goes down pretty fast ? Whatever you are using, check the voltage with a voltmeter.
Hey thank you for your response,
That actually was my first check, I am using the vehicles 12 volt battery and there is plenty of voltage (12.65V).
When I wired the MAP Sensor, it was sharing the sensor ground with the IAT....
When I experienced the problem, I disconnected everything but the 3 ground wires and the 12V power hoping to get back to square 1.
So, as it stands, the only thing that is connected is the power and the grounds.
It previously worked in this configuration.
The lap top seems to be communicating with the unit when I click the "test" button in MegaTune it responds with "successful".
But when I go to load a file it says "Controller voltage too low for reliable burn"?
MegaTune still doesn't recognize the batteries power?
MegaTune has "successful" communication when tested.
5Volts are measured on the Vref wire.
0.8 OHMs measured on the Sensor ground lead to ground.
Help?
Ok,
Matt Just walked me through it;
Apparently grounding the Vref wire erased some settings, He had me re flash the firmware (embedded code) with the MS Down load and BINGO! We're back....
Thanks Matt & Al for all your help!
