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Title: KWP2000 securityAccess - conditionsNotCorrectOrRequestSequenceError ? Post by: zxcv on March 26, 2018, 01:57:50 AM I am trying to unlock the security of an ECU. Can anyone explain this answers ? [MAIN] entering command mode 2705 - i send requestSeed -> [0227727279] ID: 780 - 12 00 02 27 05 [KW2K] KWP2000 cmd sent: 27 05 <- [0005164225] ID: 300 - B3 [KW2K] ACK received <- [0005164236] ID: 300 - 1B 00 03 7F 27 21 -> [0227727311] ID: 780 - BC [KW2K] KWP2000 error (0x21 = busy_repeatRequest) - ECU tells me to repeat, cause its doing the seed calc 2705 - i repeat requestSeed -> [0227740305] ID: 780 - 13 00 02 27 05 [KW2K] KWP2000 cmd sent: 27 05 <- [0005177350] ID: 300 - B4 [KW2K] ACK received <- [0005177361] ID: 300 - 2C 00 06 67 05 8A 20 C5 <- [0005177370] ID: 300 - 1D B5 -> [0227740337] ID: 780 - BE [KW2K] KWP2000 positive answer: 67 05 8A 20 C5 B5 - ECU responds with seed [KW2K] KWP2000 answer (text): . .. 27068A20C5B5 - i send dummy answer for sendKey -> [0227776888] ID: 780 - 24 00 06 27 06 8A 20 C5 -> [0227776919] ID: 780 - 15 B5 [KW2K] KWP2000 cmd sent: 27 06 8A 20 C5 B5 <- [0005214247] ID: 300 - B6 [KW2K] ACK received <- [0005214752] ID: 300 - 1E 80 03 7F 27 78 -> [0227777418] ID: 780 - BF [KW2K] KWP2000 error (0x78 = reqCorrectlyRcvd_RspPending) - now i get those a lot <- [0005215246] ID: 300 - 1F 80 03 7F 27 78 -> [0227777917] ID: 780 - B0 [KW2K] KWP2000 error (0x78 = reqCorrectlyRcvd_RspPending) <- [0005215740] ID: 300 - 10 80 03 7F 27 78 -> [0227778401] ID: 780 - B1 [KW2K] KWP2000 error (0x78 = reqCorrectlyRcvd_RspPending) <- [0005216233] ID: 300 - 11 80 03 7F 27 78 -> [0227778900] ID: 780 - B2 [KW2K] KWP2000 error (0x78 = reqCorrectlyRcvd_RspPending) <- [0005216728] ID: 300 - 12 80 03 7F 27 78 -> [0227779384] ID: 780 - B3 [KW2K] KWP2000 error (0x78 = reqCorrectlyRcvd_RspPending) <- [0005217221] ID: 300 - 13 80 03 7F 27 78 -> [0227779867] ID: 780 - B4 [KW2K] KWP2000 error (0x78 = reqCorrectlyRcvd_RspPending) <- [0005217715] ID: 300 - 14 80 03 7F 27 78 -> [0227780367] ID: 780 - B5 [KW2K] KWP2000 error (0x78 = reqCorrectlyRcvd_RspPending) <- [0005218209] ID: 300 - 15 80 03 7F 27 78 -> [0227780850] ID: 780 - B6 [KW2K] KWP2000 error (0x78 = reqCorrectlyRcvd_RspPending) <- [0005218703] ID: 300 - 16 80 03 7F 27 78 -> [0227781349] ID: 780 - B7 [KW2K] KWP2000 error (0x78 = reqCorrectlyRcvd_RspPending) <- [0005219197] ID: 300 - 17 80 03 7F 27 78 -> [0227781833] ID: 780 - B8 [KW2K] KWP2000 error (0x78 = reqCorrectlyRcvd_RspPending) <- [0005219298] ID: 300 - 18 00 03 7F 27 22 -> [0227781927] ID: 780 - B9 [KW2K] KWP2000 error (0x22 = conditionsNotCorrectOrRequestSequenceError) - why am i out of sequence ? - i would expect invalid key - any clues ? Title: Re: KWP2000 securityAccess - conditionsNotCorrectOrRequestSequenceError ? Post by: nubcake on March 26, 2018, 12:42:46 PM Could be that "Invalid key" response is not implemented in this ECU and it instead just tells you a generic error? Think I've seen some behavior like that in some Porsche ECU. I'm not 100% sure, though.
It kinda appears that it takes some time to do the math after receiving your request. Title: Re: KWP2000 securityAccess - conditionsNotCorrectOrRequestSequenceError ? Post by: zxcv on March 26, 2018, 02:24:33 PM yes - maybe you are right - this is a single convenience ecu 3C0959433, without any other connections (standalone only with 12V)
after this command all 27xx is borken - always the same response. you need to power cycle to send 2705 again Rgards |