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Author Topic: How-To edit a DTC function inside MED17??  (Read 3298 times)
irish07
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« on: March 05, 2017, 11:57:34 AM »

I'm NOT looking for a plugin or program of help to do a file. I'm trying to understand were the dtc's live in an MED17(or similar idea) and if it's possible to edit there function in a hex editor like WinOLS or similar (DTC will store - MIL active, DTC will Store - MIL Off, DTC will NOT Store, MIL Off...etc). I'm not looking to edit codes like P0420, P0430. I'm looking for codes that cannot be resolved easily by maps and don't correlate to emissions(open circuit to muffler exhaust bypass..etc)

Can a read with a Kess, read the file to edit the dtc's or will a bench read be required with a ktag?

I know how to do this on some other ECU's like Visteon, just wondering if there's a way to do this in MED17 besides using a program like Swiftec(..or similar).
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turbojohan
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« Reply #1 on: March 05, 2017, 12:29:21 PM »

Fehlerklasse (errorclass) difines what to do with DTC, if gives MIL and if stores in DTC list etc.
There is a list of DTC in file and list of errorclass in same order.
Look in Damos and you will find lot of info.

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prj
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« Reply #2 on: March 05, 2017, 03:15:48 PM »

Deleting fault classes is stupid.

Look for Abschaltmaske for your DTC and set the MSB.
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