All the same oiler — logbook Toyota Mark II 1990

Today, in order to establish the condition of the oil receiver and align the pan, the latter was removed, upon inspection it was found that the oil receiver is in order, the grid is translucent, everything inside the engine and pan is in oil, there are no deposits, in general, as it should be, the procedure for removing the pan time-consuming, or rather difficult, they unscrewed the subframe, hung out the engine, otherwise the oil receiver did not allow the pan to be pulled off.
Returning to the oiler: the filter is new (original), the emergency oil pressure sensor is new (original), the pan and oil receiver are clean, the pump creates pressure (checked with the book), the oil level is almost full! Everything looks pretty good under the sump, there are no backlashes, deposits too, the oil change is timely, I don’t ride until 10,000, it’s better earlier (of course, it’s not possible to check the entire engine in this way) and yet guys, even I don’t even know what to do next- then?
We will think, if there are ideas, I will be glad =)
Merry Christmas everyone!