Hello,
Thank you for contacting us, please check all the System Requirements, system setup and hardware setup for LIN Demo.
Please find the information:
Go to MM9Z1J638 Demo Software (CodeWarrior® for MCU 10.x project)
Once you have downloaded the ZIP, please go 638_drv_lib and then to "docu" folder.
Click on Documentation.html and scroll down to Demo projects.

Click on KIT9Z1J638EVM (LIN Demo) and you will find all the hardware requirements.

Hope this helps.