Being later than 1994, the refrigerant should be R-134. You should also change your accumulator/dryer, if your system requires a recharge, to preserve the system integrity down the road. These parts are fairly inexpensive, but reduces the chance of moisture damage to the system.
R134A
1998 and up 4 cylinders have timing chains not belts, which means it is not necessary to replace.
The 2002 Toyota Corolla uses a timing chain that requires no maintenance.
Toyota ,, 2010 Toyota. Corolla
Toyota ,, 2010 Toyota. Corolla
134a
It uses R-12. But if you need to add freon you might have to retro fit the a/c unit by changing it to R-134a wich is a replacement for R-12.It takes about a can 1/2.
It does not use Freon as a refrigerant. It uses R134 refrigerant.
the 1999 Toyota corolla does not use a maf but it uses a MAP sensor located somewhere around the intke manifold
It is important to maintain the proper fluids in a vehicle. A 1997 Toyota Corolla XL uses 10W30 type oil.
Pennzoil 5w-30
It uses a timing chain.