I would either download the 00 factory service manual or 99 wiring diagrams available in the 4th gen section. Look for thread titled " 94, 96, 98, & 00 service manuals, easier links" Link will take you to 99-02 wiring diagrams also. Check out the dlc wiring diagram. Make sure power and ground are good, then make sure wires to pcm are getting signal through them.