update doc

Author: frankie-zeng

docs/faq/2.png

@@ -9,3 +9,11 @@ A: You can enable padding by going to UDS Tester -> Tp Base -> Padding Enable. Y
 
 A: 这是一个已知问题，请将EcuBus-Pro安装在非C盘的其他磁盘分区上即可解决。
 :::
+
+::: details Q: When using a sequencer to send UDS services over LIN with ID 0x3C and NAD 0x55, why not send a LIN message with ID 0x3D afterward for the slave to respond? {open}
+
+A: This is due to the implementation of the lin schedule table. You should start any schedule table first.
+![2](./2.png)
+Then you can send the LIN message with ID 0x3D.
+![3](./3.png)
+:::