ELM327 used pin: 2: the SAE - J1850 PWM and SAE - 1850 VPW bus (+) 4. Body earthing 5. The signal ground 6. CAN high (ISO 15765-4 and SAE - J2284) 7. ISO 9141-2 and ISO 9141-4 K line bus 10. SAE - J1850 bus PWM agreement (-) 14. CAN low (ISO 15765-4 and SAE - J2284) 15. ISO 9141-2 and ISO 14230-4 bus L line 16. The battery voltage All the pin definition: 1. The Manufacturer discretion. GM: J2411 GMLAN/SWC/Single - Wire CAN. 2. The Bus positive Line of SAE - VPW J1850 PWM and SAE - 1850 3. Ford DCL (+), Argentina, Brazil (pre OBD II) 1997-2000, USA, 4. The Chassis ground 5. Signal ground 6. CAN high (ISO 15765-4 and SAE - J2284) 7. K line of ISO 9141-2 and ISO 14230-4 8. - 9. - The Bus was negative Line of SAE - J1850 PWM only (not the SAE - 1850 VPW) Europe, etc. Chrysler CCD Bus (+) 11. Ford DCL (-), Argentina, Brazil (pre OBD II) 1997-2000, USA, Europe, etc., Chrysler CCD Bus (-) 12. - 13. 14. CAN low (ISO 15765-4 and SAE - J2284) 15. L line of ISO 9141-2 and ISO 14230-4 16. 'voltage
