at-command - VAG TP 2.0 AT 命令完整列表

Question

我正在尝试从 Skoda Rapid 2009 模型中的各种 ECU 中查找 DTC。
我正在使用 OBDLink SX(elm 327 芯片)和 Putty(类似于 super 终端)

https://jazdw.net/tp20
这个链接给出了我应该请求任何 VAG 汽车的 ECU 的命令列表，因为它们运行在 TP 2.0 协议(protocol)上。但我无法得到任何回应。它总是给我“没有数据”。我想我缺少“AT”命令，例如设置超时或唤醒消息。

>at z 
at z 


ELM327 v2.1 



>at h1 
at h1 
OK 

>at l1 
at l1 
OK 

>at s1 
at s1 
OK 

>at pb c001 
at pb c001 
OK 

>at d1 
at d1 
OK 

>at sp b 
at sp b 
OK 

>at sh 200 
at sh 200 
OK 

>05 c0 00 10 00 03 01 1 
05 c0 00 10 00 03 01 1 
205 7 00 D0 00 03 68 07 01 

>03 c0 00 10 00 03 01 1 
03 c0 00 10 00 03 01 1 
203 7 00 D0 00 03 90 07 01 


>at sh 768 
at sh 768 
OK 

>at cra 300 
at cra 300 
OK 

>a0 0f 8a ff 32 ff 
a0 0f 8a ff 32 ff 
NO DATA 

>a0 0f 8a ff 32 ff 1 
a0 0f 8a ff 32 ff 1 
NO DATA 

有人可以帮我列出从发动机、ABS、安全气囊、EPS 等获取 VAG DTC 的分步命令吗？在线资源也会有所帮助。

Answer 1

这看起来像您没有为我设置正确的协议(protocol)设置 (sp/pb)。您确定参数和/或正确的协议(protocol)吗？您要向那里发送哪些 OBD 十六进制命令？

附言这应该是一个评论，但由于缺乏声誉(50)我不能做出一个......

更新

如果你得到

NO DATA

ELM 文档指出:

Not all requests are supported by every vehicle. Yours may not have data to give, or was never designed to respond to this PID (or SID). If you are sure that the vehicle should be responding to this request, then check that the ELM IC’s timeout has not been set too short. Try issuing a AT ST FF command so the chip waits a full second before declaring there is no data available. Maybe your ECU just has higher priority things to attend to, and it is taking longer for it to answer you.

也许某些ECU响应太慢了。尝试建议的命令以获得更长的超时时间，然后请报告。如果可能，还要检查(最终!)这些 ECU 的预期输出。