My outside toshiba split system is leaking a lot of water

Could be a lot of reason why compressor is doing that .First make sure your outside unit is clean ,if not wash coil with water .If coil is clean check capicator and replaced if bad .if capicator is good then you might have a bad compressor or a leak in your system and compressor is shutting off on low pressure .
To figure this out you need to install your refrigerant guages to check

If the unit is running in cold weather than there is ice building up on the coils located outside. This is normal in that the unit is running in heat pump mode heating inside and cooling outside, After the unit detects the ice build up it briefly reverses the cycle heating the outside coils melting(defrosting) the ice which you observe as water on the pad.

The video gives you an example of the defrost cycle!
2012 Trane XL15i Heat Pump Defrost Cycle Steam Show

It sounds like your system might be low on coolant. Check the pressure of the main line and check it against the specs. You may have a leak in the system.

The most common reasons for water leaking from the unit are:
1- Condensate drain line clogged, needs cleared.
2- System is freezing up, causing excessive water to overflow, check filter, fan motor, thermostat, and batteries.
If there is ice on the lines on the indoor or outdoor unit, the system is frozen. If it's a charging issue, make sure system is thawed completely before calling anyone. They will not be able to do anything until system is thawed out and will cause you to wait longer.

You are going to have to give a lot more information. What is leaking, how fast, etc. If it were the refrigerant you would be out by now. Where is the leak coming from.

This is normal. this is just condensation from your A/C running. You A/C system drains under your car near the passenger side.

Drain is probably jsut stopped up. I assume it worked at some point. Grab your shop vac and go outside where the condensate is supposed to drain from the unit to the outside. Turn on the shop vac and vacuum out the blockage. You should be good to go.

blow in to the drain from outside also check and make sure the filters are clean

1.check filter if really dirty change
2. check Refrigerant if low get charged by a tech
3. check the evaporator coil if dirty clean