Hyundai Repair: Fuses for 2001 Hyundai XG300, fuse box diagram, vehicle speed sensor

Question
I have a 2001 Hyundai XG300 with 75,000 miles. The speedometer went out (just stopped working). I didn'notice at the time (until needed) the air conditioning stopped working. Because the a/c indicator lights in the car stopped working I assumed to check the fuses for both first. I've located both fuse boxes but I can seem to cross reference the fuse to the exact component. Please help. Or should I be looking at something else aside from the fuses?

Answer
In Hyundai's world, these fuses are numbered.  I've looked at the schematic and the fuse for the vehicle speed sensor is fuse #23 in the passenger compartment fuse box.  Unfortunately, I don't believe there are any numbers on your fuse box diagram.  How convenient.  The only other item powered off the vehicle speed sensor fuse is the transaxle range switch.  If you are getting the correct readout in your cluster for the position of your gearshift, then this fuse is good.  If everything else in your cluster is operating normally, you'll have good power and ground there, so I wouldn't suspect that either.

In just about every case I can recall, an inoperative speedometer has been caused either by a failed vehicle speed sensor or damage to the plastic teeth on the speedometer gear in the transmission.  If you're doing your own work, I'd recommend just getting the sensor and speedometer gear and replacing them to see if it fixes the speedometer problem.  The sensor and gear assembly bolts into the top of the differential housing on the transmission.

As for the A/C, I'll need to know whether you have automatic or manual controls.  I presume the blower motor runs and you just have no cold air.  Checking fuses is a good idea, but there are many fuses which control different parts of the a/c control circuit.  I'd recommend just checking all the fuses (inside and outside).

Also, you can view Hyundai's electrical schematics for your car at www.hmaservice.com.  You'll need to register for a free account and you'll need Internet Explorer for the site to work.  After going to the service information section and entering your year and model, select the ETM (Electrical Troubleshooting Manual) tab for an index of schematics.