An evaporated fuel treatment device includes a fuel tank that stores fuel for an internal combustion engine, a canister that adsorbs evaporated fuel generated in the fuel tank, a pump that pressurizes and depressurizes a diagnostic target system including the fuel tank, a pressure detection unit that detects pressure in the diagnostic target system, a fuel state detection unit that detects a state of the fuel in the fuel tank, a leakage diagnosis unit that diagnoses leakages of evaporated fuel from the diagnostic target system, the diagnostic target system based on a change in a detection value detected by the pressure detection unit when the pump pressurizes or depressurizes the diagnostic target system, and a diagnosis determination unit that determines whether the leakage diagnosis unit performs the diagnosis based on a change in a state detection value detected by the fuel state detection unit.

Methods and systems are provided for carrying out diagnostics of a variable orifice housed in a fuel vapor recovery line. In one example, a method may include, during a refueling event, comparing an expected fuel system pressure to an estimated fuel system pressure to detect if the variable orifice is stuck in an open position or a closed position.

The present disclosure in some embodiments provides a vehicle braking apparatus including wheel brakes for providing a braking force to one or more front and rear wheels, a first actuator including a first hydraulic circuit supplying braking force to at least some of wheel brakes, a first master cylinder adjusting hydraulic pressure of the first hydraulic circuit, and a first motor, a second actuator including a second hydraulic circuit supplying a braking force to at least a remainder of the wheel brakes, a second master cylinder adjusting hydraulic pressure of the second hydraulic circuit, and a second motor, an EPB generating a braking force on rear wheels, a regenerative braking system generating a regenerative braking force, and an ECU for controlling at least one of the first actuator, second actuator, electronic parking brake, or regenerative braking system upon determining whether the first actuator and the second actuator malfunction.

There is described a closure unit (14) for an air inlet of a motor vehicle which comprises three closure flaps (18, 22, 26) which can be pivoted about a rotation axis (16, 20, 24). In a closed position, the closure flaps (18, 22, 26) close the air inlet and a closure flap which is referred to as a second closure flap (22) abuts a closed position stop (36). In an open position, the closure flaps (18, 22, 26) release the air inlet and a closure flap which is referred to as the third closure flap (26) abuts an open position stop (40). Furthermore, a method for detecting defective closure flaps (18, 22, 26) of such a closure unit (14) is explained. Furthermore, a motor vehicle having one or more air inlets is presented, wherein at least one of the air inlets is provided with such a closure unit (14).

An obtainer obtains travel data of an electric vehicle. A predictor predicts a failure due to aging in a drive circuit of a motor which drives a driving wheel of the electric vehicle, based on the travel data of the electric vehicle. The travel data includes position data of the electric vehicle and data relating to power consumption of the electric vehicle. The predictor predicts the failure due to aging in the drive circuit based on a change in an increase of power consumption generated when the electric vehicle travels a same route.

Methods and systems are provided for determining a position of active grille shutters (AGS) using a light sensor positioned behind the AGS. In one example, a method may include diagnosing a position of the AGS in response to an output of a light sensor positioned behind the active grille shutters (AGS), and responsive to the diagnosed position, adjusting an engine operating parameter. Further, the AGS diagnostic may be performed in response to an indication of ambient light external to a vehicle being over a threshold level.

An operating switch for commanding actuation of an electric parking brake mechanism includes two input terminals and two output terminals, a pair of two wirings for each input-terminal/output-terminal pair of the two input terminals and the two output terminals, each of the wirings being located between the input terminals and the two output terminals, a first switch element provided for the input terminals or the output terminals, and configured to switch connections to the two wirings, according to a command for the actuation, and a second switch element connected to one wiring of the two wirings that connects the input terminals and the output terminals when the command for the actuation given to the first switch element is set to a mode of non-operation. The second switch element is configured to switch connections to the two output terminals or the two input terminals, according to the command for the actuation.

The vehicle is a hybrid vehicle capable of traveling using motive power of at least one of an engine and a motor generator. The vehicle includes: a fuel pump; an injection valve injecting fuel supplied from the fuel pump to the engine; a fuel pressure sensor detecting a supply pressure of the fuel generated by the fuel pump; and an engine ECU. The engine ECU performs a fuel pressure increasing process of increasing the supply pressure of the fuel generated by the fuel pump, and conducts a fault diagnosis of the fuel pressure sensor based on a value detected by the fuel pressure sensor during the fuel pressure increasing process. The engine ECU conducts the fault diagnosis of the fuel pressure sensor in a case where the engine is being stopped and a vehicle speed is higher than a threshold value.

A vehicle control apparatus includes: an oil temperature sensor in the oil; a motor temperature sensor at a position higher than that of an oil level of the oil; a common temperature sensor disposed at a position in the oil when a driving state of the vehicle is a first driving state and disposed at a position higher than that of the oil level when the driving state of the vehicle is a second driving state; a state determination unit configured to determine whether the driving state of the vehicle is either one of the first and second driving states, on the basis of at least a revolution number of the motor; and a malfunction diagnosis unit configured to perform malfunction diagnosis on the basis of output from the common temperature sensor in the first driving state and output from the common temperature sensor in the second driving state.

Method and apparatus are disclosed for monitoring a vehicle power supply system having a primary and a secondary power source. An example vehicle includes a primary power source, a secondary power source comprising a low voltage battery, and a processor. The processor is configured for reducing an output of the primary power source, determining an operational characteristic of the low voltage battery while the output of the primary power source is reduced, and providing an alert based on the operational characteristic.