ELM327 V2.1 OBD2 Super MINI Bluetooth Wireless Scanner Tool Auto Diagnostic Tool for Android Devices SUPPORT 9 PROTOCOL: The ELM327 1.5 version support 9 protocol include SAE-J1850 PWM , JAE J1850 VPW(for F-ord old cars and for G M old cars use this protocol like Explorer 1998, not support Trucks ).