You can view the details about the installed CMIOUs on the Processors page in the Oracle ILOM web interface.
This task uses DCU_0 and CMIOU_0 as examples.
-> show /System/DCUs/DCU_0/CMIOU_0 power_state health health_details /System/DCUs/DCU_0/CMIOU_0 Properties: power_state = On health = Service Required health_details = fault.io.pciex.device-invreq Type 'show /System/Open_Problems' for details. ->