INTERCONNECT DEVICE FOR DETECTING VEHICLE ON-BOARD DIAGNOSTICS POWER FAULTS

摘要

An interconnect device detects whether an vehicle onboard diagnostics (OBD) data port includes a blocking diode that prevents back- feeding of power through the port. If there is a diode the device a OBO II port connector, therefore an alternate means is used to preserve the data. The alternative power supply can be connected to battery cables. The alternative power supply is used until a new battery is reconnected to the vehicle battery cables. If there is no diode, the interconnect device displays this fact to the user. The interconnect device detects when a diode is connected in series with a power pin of the OBD II port connector. In addition, the interconnect device includes OBD II port connector on one end. connected by way of a cable to a connector,such as a cigarette lighter connector or hardwired directly to an alternate power supply.