How to quickly determine whether or not a SiC module (e.g. CAS325M12HM2) is damaged ?

C1Ron

We are using three CAS325M12HM2 SiC modules for our three-phase motor drive. Suspecting that one of the modules are damaged, we measure the resistance across each module, while still mounted to respective PCBs that hold banks of capacitors. When measuring the resistance across the the modules, the value fluctuates but we get values in tens of mega-ohms (~30 MOhms). However, when measuring one of the modules, the resistance settles rapidly to ~20 kOhms. Can we conclude that the module is damaged or should we carry out further testing ? Are there application notes for how to carry out such tests ?