CAJ Innovations Forums - A Moment of Bad Luck Leads to ECU Failure

sign216 Full Member Offline Posts: 176	Re: A Moment of Bad Luck Leads to ECU Failure Reply #15 - 06/14/12 at 22:37:50 Pardon my ignorance. I wanted to take a USB to serial converter, and either splice in an RJ45 jack, or use a serial to RJ45 converter. Are those not feasible ideas?
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YaBB Administrator YaBB Administrator Offline I love YaBB! Posts: 679 The Land of YaBB	Re: A Moment of Bad Luck Leads to ECU Failure Reply #16 - 06/15/12 at 06:39:06 You can get the USB to serial converter in a number of flavours. Some go the whole hog and go to RS232, others go to TTL signal levels and these come in 5V or 3V versions. You want the 5V TTL level version. The USB cable can have various other ends. I use the flying lead version.
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sign216

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Re: A Moment of Bad Luck Leads to ECU Failure
Reply #17 - 06/15/12 at 08:01:19

YaBB Administrator wrote on 06/15/12 at 06:39:06:

You can get the USB to serial converter in a number of flavours. Some go the whole hog and go to RS232, others go to TTL signal levels and these come in 5V or 3V versions.
You want the 5V TTL level version.
The USB cable can have various other ends. I use the flying lead version.

Thanks for the information. I'll see if I can get cables to connect the MyECU, and then I can report on what the ECUcontroller program is showing.

Is there anything else I should be aware of, in getting cables?

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YaBB Administrator YaBB Administrator Offline I love YaBB! Posts: 679 The Land of YaBB	Re: A Moment of Bad Luck Leads to ECU Failure Reply #18 - 06/15/12 at 08:37:57 You can get them from Digikey http://www.digikey.com/product-detail/en/TTL-232R-5V-WE/768-1029-ND/2003494
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sign216 Full Member Offline Posts: 176	Re: A Moment of Bad Luck Leads to ECU Failure Reply #19 - 06/15/12 at 09:54:10 Thank you. Order placed.
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sign216

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Re: A Moment of Bad Luck Leads to ECU Failure
Reply #20 - 06/18/12 at 09:14:53

Digikey was fast. I've received the new USB-Serial converter cable, soldered up the connection to the modular jack, and connected the MyECU unit to my laptop.

Nothing.

When I turn on the bike the Controller program gets nothing. It's as if it's not even connected.
The bike's fuel injection still primes, and the engine can turn over, but without spark.

No obvious faults or burned components in the MyECU.

Any ideas?

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YaBB Administrator YaBB Administrator Offline I love YaBB! Posts: 679 The Land of YaBB	Re: A Moment of Bad Luck Leads to ECU Failure Reply #21 - 06/18/12 at 21:03:33 The new USB probably came up on a different COM port than before. Check this first.
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sign216

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Re: A Moment of Bad Luck Leads to ECU Failure
Reply #22 - 06/19/12 at 07:12:46

The new USB does come up to a different COM port. I connected to this port.

When I turn on the bike's ignition, the Controller program doesn't show any engine data. I can load the map from the bike, but it loads slowly, almost as if the MyECU doesn't have power. Once the bike's map is loaded, I can use the global adjust feature, but I can't see the specs for any map points.

On the PCB board the main chip gets warm, and the voltage regulator (above D1) gets warm.

The engine will turn over, plugs smell of fuel, but no spark. It seems almost like a safety switch is flipped (clutch, sidestand, etc). I put in the factory ECU as a check, and the bike fires up.

Any ideas?

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Re: A Moment of Bad Luck Leads to ECU Failure
Reply #23 - 06/19/12 at 07:29:15

None of the devices gets warm under normal operation so your symptoms sound like you have have major issues.

Is the regulator still outputting 5V.
You could try reflashing the chip but I'm not hopeful of that. A corrupted flash doesn't explain why it is warm.

So I think were looking at replacing the chip at the least. This is not completely risk free and there's no guarantee that all faults are removed.

I think the simplest solution is a replacement kit.

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sign216 Full Member Offline Posts: 176	Re: A Moment of Bad Luck Leads to ECU Failure Reply #24 - 06/19/12 at 10:32:51 Regulator is/was putting out 5v. While checking it I got a spark and a whiff of smoke in another part of the board, so I pulled all connections. It may have come from L2, as that part now has a split in the case. The unit's faults are irretrievable. I am disappointed in my lost time and effort.
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Mad Farquhar Full Member Offline Slainthe mhath Posts: 171 Black Isle, Scotland Gender:	Re: A Moment of Bad Luck Leads to ECU Failure Reply #25 - 06/19/12 at 15:47:12 At some point today I think I will wrap some self amalgamating tape around the battery positive terminal on my motorcycle.
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sign216 Full Member Offline Posts: 176	Re: A Moment of Bad Luck Leads to ECU Failure Reply #26 - 06/20/12 at 10:49:08 I'm getting regular battery terminal covers. It may be difficult, as there isn't a lot of room to fit them in. Although the ECU connector certainly found a path to the terminal! Isn't that the way luck works?
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Luhbo Full Member Offline I Like My15M! Posts: 186 Germany	Re: A Moment of Bad Luck Leads to ECU Failure Reply #27 - 06/20/12 at 20:57:41 Is it a My15M? In this case I might buy it if you'd sell it. Could need a MkIII now, at least I think so. Hubert
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Re: A Moment of Bad Luck Leads to ECU Failure
Reply #28 - 06/20/12 at 21:11:19

Luhbo wrote on 06/20/12 at 20:57:41:

Is it a My15M? In this case I might buy it if you'd sell it. Could need a MkIII now, at least I think so.
Hubert

Hubert,
It is a M15 unit, for a 2009 bike, but I'm getting another kit to build a new MyECU. I want to keep the old unit as a reference until I've got the new kit assembled.

Perhaps after that I'd let it go.
Joe

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Luhbo Full Member Offline I Like My15M! Posts: 186 Germany	Re: A Moment of Bad Luck Leads to ECU Failure Reply #29 - 06/21/12 at 06:35:53 thx
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