By contribution of electronic technologies, the vehicle can achieve higher performance and safety. It is also an important measure to control emission level. However, it may cause an emission increase or sometimes dangerous driving conditions if electronic control system fails. That is the main reason that the OBD functions are occupied approximately 50% within an ECU logics. And, the importance of OBD test increases to ensure fulfillment of legislation requirement and quality to reduce the service and warranty costs.
Especially, ETC (Electronic Throttle Control) system, which has many advantages on engine torque control flexibility but highly affects to the vehicle performance and safety controls. Therefore, it is an essential test procedure to verify the diagnosis and limp-home function for managing the possible all error cases.
In this study, the development tool of ETC limp-home function using test automation on HILS (Hardware In the Loop Simulation) is proposed and the results are presented. It shows that the application of test automation can improve time efficiency and afford rising number of vehicle variants.