Hyundai Repair: Speedometer Hyundai Sonata 97, hyundai sonata, gear assembly

Question
era Sir

My speedometer and odometer doesnt work in my Sonata 1997 2.0 engine, I have changed the sensor for a new one. I know electronics ,so I would apprecitae in you send me the cirsuit diagram for this section or the volatge I must measured in plug to check it
Thanks in advance

Answer
Hi, Fernando.  I'm presuming you've replaced the sensor on the differential.  A problem I've seen is that the gear that drives the sensor is worn.  If my memory is correct, one 10mm bolt holds this gear assembly in place, and once the bolt is removed, the assembly can be pulled out the top of the differential to inspect the gear.

As for the schematic, I cannot send it to you, but you should be able to look at it at www.hmaservice.com by simply registering for a free account there.  Once you've logged in, go the the ETM (electrical troubleshooting manual) section to access schematics.  

I'm having difficulty viewing these schematics from my home computer.  Let me know if you have issues with the schematic, and I'll see if I can view them at work.  To the best of my recollection, there are three terminals in the sensor connector.  One is for 12V power, one is for ground, and the last is for the sensor signal, which is the output from the sensor: a 12V square wave of varying frequency.