The job of the Starter Relay Circuit is to provide a power source to the starter to crank and start the engine. Depending on the specific vehicle and its drivetrain configuration, there can be multiple components involved in this process.Malfunction of the variable valve lift system. The control unit notes that the position of the natural opening of the throttle is not reached. The problem often comes out after cleaning the latter. The engine stalls immediately at the factory or at idle.