AUTOOL OBD2 Breakout Box Protocol Detector Premium Version

The AUTOOL OBD2 Breakout Box Protocol Detector Premium Version is a pass-through OBD-II diagnostic connector detector designed for vehicle diagnostics, OBD-II communication checks, power and ground line monitoring, and ECU data protection. It helps verify stable connectivity between diagnostic scanners and vehicle OBD-II systems, quickly identify communication or power supply issues, and provide convenient access to all 16 OBD2 pins for multimeter or oscilloscope testing. This product directly connects to the vehicle data link. Review the safety limits before using jumpers, load devices, or pin-level diagnostic access. Compare Basic, Upgraded, and Premium versions before choosing the right OBD2 breakout box for connection checking, protocol monitoring, power support, display reading, and deeper diagnostic access. The Premium Version combines external ECU power support, CAN communication stability support, OBD2 voltage display, LED indicator checking, and full analog OBD2 interface access for diagnostic workflows. Use the Premium Version as a diagnostic access point between a scanner and vehicle OBD-II system, especially when communication stability, power supply, or pin-level signal checks are required. Key features • Protocol Power Checks: Monitors communication protocols, power lines, and ground lines so diagnostic-link issues can be found quickly. • External ECU Support: An 8-26V external power input helps keep vehicle power stable during diagnostic work. • 120 Ohm Series Mode: The box can still read ECU data through the cable even when the ECU is removed, extending diagnostic scenarios.