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m3ph · 08-18-2010, 05:16 PM

Hello,

I built myself an obduino and everything exept one thing seems to work fine.

The thing is, that when I turn off the ignition in my car, the obduino goes to sleep (alarm screen). When I start my car up again, the alarm screen stays and no info is displayed. It seems that the obduino for some reason, can not sense when the car is started.

What could the probable causes for this be?

My car is a 2005 Mazda MX5 (Miata). I'm using ISO 9141 standard and useECUstate, do_ISO_Reinit and carAlarmScreen have been defined (tried all the other ways too, but nothing worked, same problem).

Any help would be appreciated.

One more question: Are the Signal Ground and Chassis Ground pins on the OBD2 supposed to be connected together? The connector I bought had those pins soldered together inside. Could this be my problem?

08-18-2010, 05:16 PM	#568 (permalink)
m3ph EcoModding Lurker Join Date: Aug 2010 Location: Tallinn, Estonia Posts: 11 Miata - '05 Mazda MX-5 Gixxer - '07 Suzuki GSX-R 750 Thanks: 2 Thanked 0 Times in 0 Posts	not sensing car start Hello, I built myself an obduino and everything exept one thing seems to work fine. The thing is, that when I turn off the ignition in my car, the obduino goes to sleep (alarm screen). When I start my car up again, the alarm screen stays and no info is displayed. It seems that the obduino for some reason, can not sense when the car is started. What could the probable causes for this be? My car is a 2005 Mazda MX5 (Miata). I'm using ISO 9141 standard and useECUstate, do_ISO_Reinit and carAlarmScreen have been defined (tried all the other ways too, but nothing worked, same problem). Any help would be appreciated. One more question: Are the Signal Ground and Chassis Ground pins on the OBD2 supposed to be connected together? The connector I bought had those pins soldered together inside. Could this be my problem?