If no FW update was attempted and your device can pass fw+bootloader test don't worry countinue reading! Share the pictures with both sided of PCB. Then no communication with ECM appears due to not connecting with OBD2 port. Instead the hardware passes through and ECU communication page opens. But when the hardware is not connected to OBD2 I don't receive error text. But when I try to connect the car i receive " Interface communication error, or interface not powered from car!". When I check interface by software, 120309a, I get the version and interface passes the test. Opcom clone V1.99 got error "Interface communication error, or interface not powered from car" how to solve? Got one Opcom clone V1.99 running Vaux-com 120309a, first I had no issue, but I tried to test different software versions coming with hardware ending connection error with ecu.
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