No Communication With All Systems
- Check voltage between ground and OBD-II Data Link Connector (OBD-II DLC) terminal No. 16. If battery voltage exists, go to next step. If battery voltage does not exist, repair connectors and/or wiring between OBD-II DLC and power supply.
- Check resistance between ground and OBD-II DLC terminals No. 4 and 5. If each resistance is less than 2 ohms, repair or replace scan tool. If either resistance is 2 ohms or more, repair wiring between ground and OBD-II DLC.