Excellent Post. Worked fine on my 2011. (both front line filters plugged - after 12 yrs)
Tip: 1/8 " drip irrigation tubing works great for probing lines. Need about 10 feet.
Link for discussion of EVAP noises.
For those technically minded:
AutoFocus: Be a Toyota leak detective - Article - Modern Tire Dealer
Apparently the EVAP test comes on after ~ 5hours and runs for up to 12mins.