ECU Power Supply and Ground Testing: Voltage Drop Diagnosis and Common Faults Electronic Control Units (ECUs) depend on stable power supplies and reliable ground connections to operate correctly. Even when an ECU is internally functional, a weak battery connection, damaged ground wire, corroded terminal or faulty fuse connection can cause communication failures, unexpected resets and […]
ECU Ground Connection Testing: How to Diagnose Electrical Problems Before Programming A reliable electrical connection is essential for automotive ECU programming. Even when the correct programming tool, software and communication protocol are selected, a poor ground connection can prevent an electronic control unit from responding correctly. Ground-related problems may cause communication failures, unstable voltage readings, […]