• Performed verification and validation of software and hardware on Powertrain ECU and ACM utilizing ATI-Vision, CANalyzer, and equipment such as breakout wire harnessing, function generator, DC power supply, oscilloscope, and multimeter.• Diagnosed and resolved On-Board Diagnostics (OBD) system faults through diverse testing methodologies, encompassing Hardware-in-the-Loop (HIL) testing, CAN signal communication testing, and electrical fault insertion testing.• Developed Diagnostic Trouble Code (DTC) test and verification procedures through engineering fault-tree logic analysis and root cause assessments.• Verified over 80 OBD faults, advancing pilot testing by 13% across two projects, including the new Volvo VNL-860