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yes there is a fuse and it should be behind a panel in the lower dash near the drivers area..the fan is located under the hood way back up behind the engine on the passengers side and kind of hard to reach..good luck
The diagram is a little hard to follow, but it looks like on the high fan relay there are 5 circuits like on the hi-low relay. Pin 86 is power for the magnet, 85 is the ground signal from the module. The module grounds the magnet to move the contacts. Pin 30 goes to the fan and pin 87 goes to a 50amp fuse. Pin 87A is a jumper between the two relays. The fan motor gets power from three different sources and is grounded to the car. The other two wires are return signals to the module. Kind of like a three way light switch in a house. On the fan control relay, pins 30 and 85 are hot, pin 87 goes to the fan motor, and pin 86 is grounded by the module. I can send you the diagram in a separate message if you need to see it.
The large fuse you checked is for the rear fan blower motor. The fuse you need to check is for the fan motor relays and rear mode control motor. It is fuse No. 3 (7.5A) located in the driver's under dash kick panel fuse box.
If fuse No. 3 is blown and you replace the fuse and it blows immediately, you'll have to check the five relays and the mode control motor all located near the rear A/C unit in the right aft sidewall. Most likely, the mode control doors have become jammed and that is why the fuse blows. The doors shift air from overhead vents (cool) to floor vents (heat).
If the fuse is fine, the trouble is probably with the blower motor itself or the wiring to the blower motor is broken, or there is a bad ground.
Hi its ounds like the fan has failed, the fan blows the heat into the vents without it, it will just remain in the heater core. other possibility and very common also is the cabin heater regulator they ofetn go, located in the middle of the car looking into the engine compartment has 2 pipes one in one out, feel the pipes see which is hot etc and get back to me.
You will need to go on the web and just type in the year make model and repair manual and a few sites will pop up, theres a few thing that would cause the fan to be hot wired.a bad fan relay which is the most common problem this is located on the driverside shock tower area,it has the relay and the fuse, and the coolant temp fan switch may also be bad,