Hi @Deviprasad ,
Thank you so much for your interest in our products and for using our community.
Question: I want to integrity check for the system(Flash, RAM and CPU etc). Please guide me to do.
Answer:
1: For Flash, I suggest you can use SDK demo "evkbmimxrt1170_flexspi_nor_polling_transfer_cm7", and link application to RAM.

In this example, flexspi will send data and operate the external Nor flash connected with FLEXSPI.
2: For RAM, I suggest you can refer to application Note
https://www.nxp.com.cn/docs/en/application-note/AN12077.pdf
i.MX RT1170 ECC Application
I do not suggest you burn Fuse to enable ECC for test.
3: For CPU and Peripherals:
I suggest you can run SDK demo on your board.
NXP releases a lot of SDK demos, you can refer to.
https://mcuxpresso.nxp.com/en
Wish it helps you.
If you still have question about it, please kindly let me know.
Wish you a nice day!
Best Regards
MayLiu