@walls I Did a small video of what can be monitored (did not include abs and airbags data) while driving a vitz 2009 this morning, note how o2 works when engine is not in optimal temperature, but unfortunately i found a lot of traffic so the throttle was most of the time 0%
The screens are transmitted wirelessly to a pioneer head unit from my android mobile phone,
Yes it has both but i dont have the car at the moment so cannot send you pics
The egr works if the car meet a specific condition, you can see it in video above
The pcv is the first thing to clean if your engine is consuming too much oil before you do compression tests etc.