DIY car repairs? I can adopt the replaced components to your vehicle’s ECU, so the computer recognizes the new part correctly.DIY car repairs? I can adopt the replaced components to your vehicle’s ECU, so the computer recognizes the new part correctly. Components Active Tests: I can access the actuators and command the activation of computer controlled components. Activation/Deactivation of solenoids and switching the state of relays open/close for testing purposes.