ECU Hacking 101

I've been reverse-engineering ECUs since 2001. This blog is to share what I've learned about Honda and Mazda ECUs and to provide you with tips and advice if you would like to hack your own ECU.

Tuesday, February 22, 2011

NB Miata - OBD Mode 7, and Mode 3 update

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Mode 7 is similar to Mode 3, in that it does not take any PIDs, and reports on DTCs. They are so similar, in fact, that they share the same...

Sunday, February 20, 2011

NB Miata - OBD Mode 6, part 1

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There is some interest in Mode 6 because the information it provides can sometimes give "early warning" of problems, and also beca...

Thursday, February 17, 2011

NB Miata - OBD Mode 5

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If you thought Mode 4 was simple, Mode 5 is, in some ways, even simpler. At least a Mode 4 request causes something to happen. Mode 5 requ...

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Saturday, February 5, 2011

NB Miata - OBD Mode 4

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This is a very simple mode. There are no PIDs. A mode 4 message tells the ECU to clear all DTCs. Under the hood, the way it works is as ...

Wednesday, January 19, 2011

NB Miata - OBD Mode 3 and DTCs

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Update: 2/22/11 I originally thought that Mode 3 could report any of the DTCs listed below. This is incorrect. The list below is actuall...

Sunday, January 9, 2011

NB Miata, OBD Mode 2

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Today's post is pretty brief, as I'm planning to do one post per OBD Mode, and there's not a lot to say about Mode 2. OBD Mode...

Saturday, January 8, 2011

NB Miata Specifics, OBD Mode 1

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So far, I've given you some general guidelines for extracting your ECU's firmware image and some suggestions for how to begin analyz...

4 comments:

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