A/C blower suddenly stopped working?

[TheCanadianSahara]

Hopped in my 2003 TJ Sahara this morning to find out my heat and A/C blower had suddenly stopped working. None of the 4 fan speeds on heat or A/C get the fan to kick on. Is this likely to be a fuse related issue or a fried wiring harness? Anyone dealt with this? Thanks.

 

[Foxhound67]

I just had this issue yesterday myself. I checked fuses, checked the switch, the relay, and finally determined it's the actual blower motor that's bad on mine. I'd check the 8 fuse behind the glovebox (10 amp) and the 11 in the main block in the engine bay (40 amp). Then try swapping the relay to the right of the fuse block behind the glovebox. Easy stuff to eliminate.

 

[CharlesHS]

While looking at the above post suggested fuses, speed selector switch, fan relay and blower fan along with the fuses in the fuse block behind the glove compartment and the PDC in the engine compartment; also check the speed resistor behind the glove compartment and do a thorough inspection of the speed resistor, speed selector switch and blower fan wiring harnesses.

 

[Lckydrw]

With an abrupt failure, start in your passenger seat. Behind the glove box is a fuse and relay. Under it is the resistor. Lots of YouTube university presentations on this. If all check out move under the hood to the motor and underwood fuses and relays. Must be cold where you are. That’s when they crap the bed on you. Good luck!

 

[Lckydrw]

With an abrupt failure, start in your passenger seat. Behind the glove box is a fuse and relay. Under it is the resistor. Lots of YouTube university presentations on this. If all check out move under the hood to the motor and underwood fuses and relays. Must be cold where you are. That’s when they crap the bed on you. Good luck!

Under hood ***

 

[JPHikr]

Are you getting voltage at the blower fan plug?