kwp2000 me7.5 ecu read coding not work

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Topic: kwp2000 me7.5 ecu read coding not work (Read 1293 times)

tao13

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	kwp2000 me7.5 ecu read coding not work « on: February 28, 2025, 12:17:35 PM »

Hi.
I try to read VIN (90) and coding(92) with readECUIdentification command(1A) but i receive negative response.
ECU HW and SW i can read it.
Any ideea?
Thanks


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gremlin

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	Re: kwp2000 me7.5 ecu read coding not work « Reply #1 on: February 28, 2025, 07:41:03 PM »

Quote from: tao13 on February 28, 2025, 12:17:35 PM

I try to read VIN (90) and coding(92) with readECUIdentification command(1A) but i receive negative response.
ECU HW and SW i can read it.
Any ideea?

90 and 92 subfunctions are not supported by 8N0906018H_0004 firmware.
Disasm sub_83A662 and you will see - only 92 and 94 are supported.


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tao13

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	Re: kwp2000 me7.5 ecu read coding not work « Reply #2 on: March 02, 2025, 11:35:51 AM »

Thanks a lot.
With dissam i'm at begin....
Please let me know if Acknowledge is available on kwp2000?
I used 9B before but after a bad kwp2000 documentation where it wrote it is only 18 bytes long.
I found new info and 9B is 46 bytes long and i found the coding in it at bytes 20 and 21.


« Last Edit: March 02, 2025, 12:39:21 PM by tao13 »	Logged

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