How to used IID tool to pin-point the EAS issue

[jackkyxu]

sorry, I have to open a new thread

I still have strut slightly drop issue and (maybe too frequent) compressor run issue from the EAS system

I want to use IID tool to pin-point the EAS issue

I saw somewhere that people use IID too to monitor the PSI change in the EAS system (strut, reservoir, valve ....)

I am wondering whether someone can give me guidance about what I should monitor and how I should monitor

Thank you for all your knowledge shared here

PS. I do not have any fault code here