My heater not working in toyota estima 1993 model just blowing cold air.

Question edited for clarity.
Question moved to model category.

Here are the Fuse Box Diagrams

Toyota Previa 1995 Pin Fuse Box/Block Circuit Breaker ...

CarFuseBox https://www.carfusebox.com > toyota-previa-1995-pin...

Apr 15, 2023 - Toyota Previa 1995 Pin Fuse Box/Block Circuit Breaker Diagram ; 1, Relay Heater ; 2, Relay Heater ; 3, (Headlamp) Relay Light ; 4, Relay Engine Oil.

Fuse Box Diagram Toyota

Fuse Box Diagrams https://fuse-box.info > Home > Toyota
Fuse box diagrams (location and assignment of electrical fuses and relays) Toyota Previa (1995, 1996, 1997). Toyota Prius (XW11; 2000-2003)...> ...

Toyota Estima Previa 2G fuse and relay

FuseAndRelay.com https://fuseandrelay.com > toyota > estima-previa

Designation of fuses and relays Toyota Estima Previa 2nd generation, locations of control units and their diagrams. Cigarette lighter fuse.

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A little more info needed..blower works but blows cold air, blower doesn't work?

The blend door is stuck, broke or loose, check behind the glove box on the plenum while moving the temp control to see what moves

have your themostat replaced it is very inexpensive

The air conditioning system need to be fill with gas,there is not enough gas in it that why it is doing that,Hope that help you,If there is not enough gas ,when you switch on the ac button it turns the ac compressor and cut off immediately because there is not enough gas.

If the engine temprature does not reach the normal level as it used to, it may be the coolant thermostat.

Iif it does, it could be air diverter gates not working properly, cold air blowing at a a light could point to that. The diverter gates are located under the dash.

It also coul be the valuve that controls the water to the heater core, but unlikely cause of the cold air at a light.

thermastat could be stuck closed allowing no heat.also heater core could be plugged

Check the valve that controls coolant flow to the cabin

check the coolant level on the readiator

Replace the spark plugs and the plug wires; use Toyota parts.