I have searched and cant find the info on diagnosing the problem when the speedometer stops working on a 2001 Rodeo 3.2 with code P0502 speed sensor A circuit low input. It is electrical and I dont know where or what ohms or volts to check for. It hasnt worked for 20k miles. I already replaced the vss for $100+ and I just bought the haynes manual and the only thing in it is to replace the vss. I downloaded one 148mb manual from here viewtopic.php?f=1&t=39947&p=310876&hilit=manual+download#p310876 but is isnt listed.