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Author Topic: KWP2000/TP2.0 module coding  (Read 2247 times)
fastboatster
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« on: July 04, 2018, 04:18:35 PM »

I apologize if this question has been asked and answered before, I wasn't able to find clear instructions on how to do this programmatically, though. I know that many modules return their identification, software version, workshop code and coding info as a response after receiving 1A 9B kwp request. Is there any info on the structure of this response? I was able to clearly see ascii strings with part numbers and software versions and numbers which correspond to coding info obtained by other methods, but I don't know how to decode this response in a general way. Similarly, I'm not exactly sure how to construct write request when trying to update coding info and write it back.
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fastboatster
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« Reply #1 on: July 04, 2018, 07:28:20 PM »

So this is what I got from one of the docs from this forum:

ECU-IDP 9B Content Format
1 … 11VW / Audi-Part number7 Bit-ASCII
12Space (0x20)7 Bit-ASCII
13Configuration Program status and programmability37 Bit-ASCII +MSB
147 Bit-ASCII
15Data status7 Bit ASCII
16

Doesn't seem to talk about coding info or anything like that
« Last Edit: July 04, 2018, 07:30:32 PM by fastboatster » Logged
stephanga
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« Reply #2 on: August 25, 2020, 08:48:41 AM »

So this is what I got from one of the docs from this forum:

ECU-IDP 9B Content Format
1 … 11VW / Audi-Part number7 Bit-ASCII
12Space (0x20)7 Bit-ASCII
13Configuration Program status and programmability37 Bit-ASCII +MSB
147 Bit-ASCII
15Data status7 Bit ASCII
16

Doesn't seem to talk about coding info or anything like that

Could you please let me know where to find this document?
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aef
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« Reply #3 on: August 26, 2020, 03:25:27 AM »

Byte 17 contains the number of coding table and the lenght of coding information
Byte 18 to 20 is coding in hex
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