Hi folks, I hope some one can shed some light on my problem. I have been driving my 91 XJ without any problems with the A/C and blower. all has been fine. Drove it home from work today and shut off everything like I always do, when we went out to go to the store, the A/C and the blower won't come on. I swapped the relays around and nothing, I know the Blower and the A/C are different circuits and even on Vent the blower won't work. I checked the connections at the controls and all are tight, and the blower switch is only 2 weeks old, and has had no signs of trouble. I do have 12vdc at the relay ( not sure which pin it is....any ideas ? I live in Abu Dhabi where the temps are over 120 degrees and I sure need my A/C to work....thanks and I hope to hear from someone soon.

 

Check for power at switch in all speed settings.

 

Wiring diagram here:
http://jeep.zerok.ru/index.php?page=196

Looks like the Blower and the A/C pressure switches are all fed from the 'blower' fuse. Is that fuse OK? Power at the fuse socket?