08 corolla automatic transmission fluid check manual

#1
i could not find the info in the book downloaded, how to check automatic transmission fluid, at what level should it be.
i read somewhere on internet when engine cold check the fluid level and it should be between two knotch at stick. so i did and discover the fluid is over than two knotch even more higher than heat knotch. so i drain at least one liter. after i start the engine and check it back, surprise, there was no fluid on stick at all, but luckly i was still able to drive the vehicle.
now you understood my problem. can someone share the manual where it says how to check the fluid?
and can someone confirm me if engine should be started or completry shut off?
 
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