How to Check Transmission Fluid Level

[Celsiorous]

Hi,

I have a 1990 Celsior/LS400, im concerned that the transmission fluid may be low. I have read that the correct way to check the transmission fluid is to have the car warm and running, then leave it in drive while someone applys the brake and check the level on the dipstick.
Is this correct? Does anyone have a manual that describes this process?

Thanks in advance.

 

[Lextreme II]

Actually the 1UZ tranny dipstick has two readings. Cold and Warm/Hot.

 

[Celsiorous]

Thanks Lex but do you check it with the engine running and what gear should be selected on the trans?