Abstract: Techniques for drone device control are provided. In one example, the technique includes monitoring, by a drone device operatively coupled to a processor and allocated to a vehicle in operation, one or more conditions associated with the vehicle. The technique also includes, in response to identifying, by the drone device, a defined condition of the one or more conditions: moving, by the drone device, to a position relative to the vehicle and determined based on the defined condition; and performing, by the drone device, an indication operation determined based on the defined condition.

Abstract: A light emitting device includes a light emitting element, a first light transmissive member, a second light transmissive member, and a light reflective member. The first light transmissive member contains a first phosphor. The first light transmissive member is in contact with an upper surface of the light emitting element, and has an area smaller than the light emitting element in a plan view. The second light transmissive member contains a second phosphor. The second light transmissive member covers lateral surfaces of the first light transmissive member and a part of the upper surface of the light emitting element that is exposed from the first light transmissive member, with an upper surface of the first light transmissive member being not covered by the second light transmissive member. The light reflective member covers lateral surfaces of the second light transmissive member and lateral surfaces of the light emitting element.

Abstract: A headlamp fastening system for a vehicle is provided herein. The headlamp fastening system includes a support structure, a headlamp structure, and an alignment element. The alignment element is configured to align and fix the headlamp structure with the support structure with respect to the z-direction of the vehicle. The alignment element holds the sup port structure and the headlamp in an alignment position. In the alignment position the support structure and the headlamp structure are relatively displaceable in the x-, y-, and z- direction relative to one another. The alignment element fixes the support structure and the headlamp in the fixed position, wherein, upon the alignment element fixing the support structure and the headlamp structure relative to one another with respect to the z-direction, the support structure and the headlamp structure simultaneously become fixed relative to one another in the x- and y-direction.

Abstract: A headlamp includes a light-emitting module that includes a condenser lens that defines an optical axis through a center of the condenser lens and that is configured to focus light incident on a rear surface of the condenser lens. The light-emitting module further includes a laser light source that is located behind the condenser lens and that is configured to generate light toward the condenser lens. The light-emitting module further includes a microelectromechanical system (MEMS) scanner that is located in front of the condenser lens, that is configured to reflect, toward the condenser lens, light generated by the laser light source, and that is configured to scan light generated by the laser light source by moving horizontally and vertically. The light-emitting module further includes a reflection unit that is located behind the condenser lens and that is configured to reflect light reflected by the MEMS scanner.

Abstract: A lighting circuit which lights a semiconductor light source, the lighting circuit includes a drive circuit configured to receive a PWM signal from a controller, to generate a drive current to the semiconductor light source, and to switch the drive current according to the PWM signal. When a non-input state of the PWM signal exceeds a predetermined time, the lighting circuit is configured to assert an abnormality detection signal and to output the abnormality detection signal to the controller.

Abstract: According to one embodiment, a vehicle lighting device includes a plurality of circuit portions that have at least one light emitting element; and a control portion that is electrically connected to the plurality of circuit portions. The control portion detects an input voltage and connects the plurality of circuit portions in series when the detected input voltage exceeds a predetermined value and connects at least a part of the plurality of circuit portions in parallel when the detected input voltage is equal to or less than the predetermined value.

Abstract: A tell-tale indicator for aiding an operator in locating and operating a secondary hood latch release in a gap between a vehicle body and an openable hood includes an indicator configured to locate the secondary hood latch release such that the secondary hood latch release is readily locatable and operable to open the hood. The indicator may be further configured to display an operating direction of the secondary hood latch release.

Abstract: The present invention prevents deterioration in design of a turn lamp by a reflected image of lens cuts of a light-guiding lens. A turn lamp includes a light-guiding lens, a mirror surface disposed behind the light-guiding lens, and a light source that causes light to enter light-guiding lens. The light-guiding lens includes lens cuts formed so as to extend in a light-guiding direction thereof. A mirror surface includes a recess surface formed behind the lens cuts along the lens cuts. The recess surface is formed so as to have a width in a short direction thereof, the width being larger than a width in a short direction of the lens cuts.

Abstract: A vehicle is provided that includes an external body panel that includes a license plate positioned on the external body panel. A lighting assembly is disposed on the vehicle and a detectable layer is disposed on at least one of the license plate and the lighting assembly. The detectable layer is configured to reflect at least one band of the electromagnetic spectrum.

Abstract: A seat illuminating system (101D) for, in particular sunlight-like, illuminating a target region (144) comprises a seat arrangement (140) having a seat surface (142A). The target region (144) is defined for a person sitting on the seat surface (142A). The seat illuminating system (101D) comprises further a mounting structure (150A) being spatially fixed with respect to the seat arrangement (140); a reflector unit (106) mounted at the mounting structure (150A) and comprising a reflective surface and a luminous layer for homogenously emitting diffuse light at a first color, the luminous layer extending in front of the reflective surface and comprising a visible front area section (110A) of the reflector unit (106).

Abstract: An illumination system includes: a seat in a mobile body; a table to be positioned in front of a passenger when the passenger is seated on the seat; a first light source which illuminates the table; and a second light source which illuminates a region closer to the passenger than to the table. When a distance from the first light source to the table is equal to a distance from the second light source to a virtual irradiated surface, an illuminance on the table irradiated by the first light source is lower than an illuminance on the virtual irradiated surface irradiated by the second light source.

Abstract: A method and apparatus for use in traversing a vehicle transportation network may include receiving, from a remote vehicle, via a wireless electronic communication link, a remote vehicle message, the remote vehicle message including remote vehicle information, determining a relative position code indicating geospatial location of the remote vehicle relative to the host vehicle based the remote vehicle information, determining a remote vehicle dynamic state code based on the remote vehicle information, determining a host vehicle dynamic state code; identifying a vehicle control action based on the relative position code, the remote vehicle dynamic state code, and the host vehicle dynamic state code, and traversing a portion of the vehicle transportation network in accordance with the vehicle control action, such that traversing the portion of the vehicle transportation network includes performing passing lane collision avoidance.

Abstract: A video mirror system for a vehicle includes an interior rearview mirror assembly including a mirror case and a reflective element, and a video display device disposed in the mirror case and operable to display video images that are viewable by the driver of the vehicle. The reflective element includes a transflective mirror reflector and the video display device is fixedly disposed to the rear of the reflective element. The interior rearview mirror assembly includes an on-screen display controller operable to receive a video signal from a camera disposed at the vehicle. The on-screen display controller is operable to overlay a graphic overlay onto a video signal received from the camera such that a video feed generated by the on-screen display controller includes the graphic overlay. The video display device comprises a metallic enclosure that is electrically grounded when the interior rearview mirror assembly is mounted at the vehicle.

Abstract: A vehicular interior rearview mirror assembly includes a mirror reflective element having a glass substrate with a planar front surface and a circumferential edge along the periphery of the glass substrate. A mounting element is disposed at the rear of the mirror reflective element and includes a pivot element that is configured to pivotally mount the mirror reflective element at the vehicle. A plastic molding receives the mirror reflective element therein such that a portion of the plastic molding is circumferentially disposed about the circumferential edge of the glass substrate without overlapping onto the front surface of the glass substrate. The portion of the plastic molding provides a curved rounded transition from the front surface of the glass substrate to a side surface of the plastic molding. The plastic molding includes at least a portion of a mirror housing of the interior rearview mirror assembly.

Abstract: A motor vehicle drawer assembly is disclosed having a slideable drawer and a moveable plate housed in a casing. The drawer and the plate both have overlying compressible members used to restrain from movement an item placed in the drawer when the drawer is in a closed position. Movement of the drawer to the closed position causes the plate to move towards the drawer to clamp any item resting on the drawer thereby restraining movement of the item but not until the drawer approaches the closed position. The use of a clamping mechanism that only allows for movement of the plate towards the drawer when the drawer approaches the closed position prevents the plate from interfering with stowing of the item.

Abstract: A cup holder assembly includes a door configured for translation between an open and a closed configuration, at least one receiver sidewall, and at least one first cup holder surface provided by a bottom surface of the door and configured to upwardly extend at least a portion of the receiver sidewall when the door is disposed in an open configuration. A retention system for a container is provided, including at least one container biasing member and at least one container supporting member. The container biasing member may be door-mounted or receiver sidewall-mounted.

Abstract: A short-range wireless communication system mounted on a vehicle includes a master device and slave devices. Each of the master device and slave devices is a short-range wireless communication device that communicates with a mobile terminal located in a communication range to perform a wireless communication. The master device includes a mobile terminal detection unit detecting the mobile terminal located in a communication range of the master device and an activation control unit performing an activation control to activate the slave devices in response to a detection of the mobile terminal by the mobile terminal detection unit. Each slave device is maintained in a deactivated state until activation control is performed by the activation control unit of the master device. Each slave device is activated when the activation control is performed by the activation control unit of the master device.

Abstract: A system for providing security to a fleet of vehicles, the system comprising: a plurality of modules, each module configured to monitor messages propagating in an in-vehicle network of a vehicle comprised in the fleet; a memory having data characterizing messages, and software executable to: identify an anomaly in communications over the in-vehicle communication network; and instruct a communication interface, configured to support communication with an entity external to the vehicle, to transmit monitoring data responsive to the messages; and a processor configured to execute the software in the memory; and a data monitoring and processing hub external to the vehicles comprised in the fleet and operable to receive transmission of monitoring data from the plurality of modules.

Abstract: An in-vehicle communication network comprising at least one node connected to a bus, the network comprising: at least one memory comprising software having data characterizing messages that propagate over the network during normal operation and executable instructions for processing a message based on the data to determine if the message is normal or anomalous; a module operable to: process messages received from the in-vehicle network in accordance with the executable instructions and the data to identify an anomaly in communications over the in-vehicle communication network; accumulate and store information responsive to the processing of the received messages; instruct a communication interface, configured to support communication with an entity external to the vehicle, to upload the stored information or a portion thereof to the entity external to the in-vehicle network.

Abstract: The present invention relates to a wire harness arrangement structure of a vehicle, comprising plural component control parts to control plural electric components for governing a drive of the vehicle, a main control part to generate a command signal for providing a command to the plural component control parts, and plural main wire harnesses to transmit the command signal to the plural component control parts. The plural electric components include at least a brake, an engine, a transmission, and a steering, the plural main wire harnesses comprise first signal transmission routes which extend from the main control part to the plural component control parts, respectively, and second signal transmission routes which extend from the main control part to the plural component control parts, respectively, and the command signal is transmitted to the main control part to the plural component control parts through the first and second signal transmission routes.

Abstract: The present invention relates to a wire harness arrangement structure of a vehicle, comprising plural component control parts to control plural electric components for governing a drive of the vehicle, a main control part to generate a command signal for providing a command to the plural component control parts, and plural main wire harnesses to transmit the command signal. The plural electric components include at least a brake, an engine, a transmission, and a steering, and the plural main wire harnesses constitute a signal transmission loop which extends from the main control part and returns to the main control part by way of the plural component control parts.

Abstract: A seal mold divided structure for combination cable is characterized in that it comprises the following structures: a first cable and a second cable separated from the combination cable; a connector provided at the end of said first cable; a division molding portion that molds the division part between said first cable and second cable and keeps said first cable and second cable separated from each other; a connector molding portion that molds the connection part between said connector and said first cable; a protection tube that protects said first cable, with its ends respectively fixed to said division molding portion and said connector molding portion; and isolation portions, which are respectively inserted from the inner sides of both ends of said protection tube and wrap the exterior of said first cable, capable of preventing inflow of a molding compound.

Abstract: A support structure for a vehicle roof panel includes a solar panel module. The solar panel module is disposed within an opening defined by an outer periphery of a support structure. The solar panel module includes a first part configured to slide underneath a second part containing a solar array adhered to a flange. The flange has a plurality of ribs extending across the solar array. The ribs have a V-shaped cross-section to support the solar panel module within the second part.

Abstract: Methods and systems are provided for an on-board electrical system for a motor vehicle that includes one or more power sources and an electrical subsystem with a switch that can be actuated to selectively bypass a DC/DC converter and a storage device, responsive to electrical parameters such as the power demand of high-power consumers. In one example, when high-power consumers have low and constant power requirements, the switch may be positioned to bridge the DC/DC converter and storage device. Further, the method includes selectively controlling the power source in order to meet peak power demands with the power source operating at the greatest efficiency for the given operating conditions.

Abstract: An on-board electrical system for motor vehicles has a battery, a generator and at least one normal consumer that is connected to the battery in a switchable manner. A DC voltage/DC voltage converter is connected on its primary side to the battery and on its secondary side to a high-load resistor. A switch connects the high-load consumer to a storage device in a first switching position, and to the primary side in a second switching position. A controller controls and operates the switch between the first and the second switching position. A device that detects the actual electrical power of the high-load consumer is associated with the high-load consumer, and is connected at the output end to the controller.

Abstract: An apparatus, including a first battery capable of providing electrical power to a first load of a vehicle, premises, or article, at a selected time, and which does not draw current when a system is not operating; a second battery capable of providing electrical power to a second load, which second load draws current when the system is not operating; a first switch capable of disconnecting the first battery from a first circuit containing the system; a second switch capable of connecting the first battery to the first circuit containing the system and is capable of connecting the first battery to a second circuit containing the first load; and a battery recharger which recharges both the first battery and second battery simultaneously when the system is operating. The second battery provides electrical power to the second load when the battery recharger ceases to operate.

Abstract: A system for a vehicle at least one adjustable component of the vehicle is disclosed. They system may include a sensor configured to generate a signal indicative of an identity a user before the user enters the vehicle, and a controller in communication with the sensor and an actuator configured to adjust the at least one adjustable component. The controller may be configured to automatically cause the actuator to adjust the at least one adjustable component responsive to the signal.

Abstract: A bumper beam is roll formed so that it gets a closed cross section with, along the length, constant cross section having at least two closed chambers (15, 16) separated by an essentially horizontal partition wall (14). Each chamber has a side (19), which is turned away from the vehicle, with at least one longitudinal concave portion (20, 21; 22, 23) extending along the entire length and one side (24), which is facing the vehicle, with at least one longitudinal convex portion (25, 26; 27, 28) extending along the entire length. After the roll forming, some portions (32) of the cross section are pressed together vertically or horizontally in order to adapt the deformation properties.

Abstract: A bumper assembly is provided having a flange that overlies the body of the vehicle. The flange may be a body flange extending from an elongate bumper beam or a cladding flange extending from an external cladding that covers at least a portion of the bumper beam. The flange may protect the body from wear or corrosion, and/or bridge a gap between the frame and the body of the vehicle. The assembly may also include a contact structure for contacting at least a portion of the vehicle frame, such as the hitch beam. The contact structure may resist rotation of the bumper assembly, prevent vibration of the bumper assembly against the frame, and/or support a vertical load on the bumper. In some embodiments, the assembly may be primarily mounted to the body of the vehicle, such that the bumper beam “hangs” from the body of the vehicle.

Abstract: A fastening arrangement is provided in order to reduce damage to a bumper and a side panel and/or a fender of a motor vehicle connected by way of a supporting element in a low speed range. The supporting element has a first supporting strip that can be fastened to the side panel and/or the fender and a second supporting strip that can be fastened to the bumper. At least one holder is provided, which releasably connects the first supporting strip and the second supporting strip to each other.

Abstract: The present invention discloses a bumper-cart light assembly of a golf cart. The bumper-cart light assembly includes a bumper body, a lower support, an integral cart light assembly and two upper supports. The two upper supports are symmetrically arranged at the upper end of the bumper body respectively. The lower support is arranged at the lower end of the bumper. The periphery of the bumper body extends rearwards to form a recess. The upper end of the bumper body forms a connecting tab. The upper end of the bumper protrudes upwards to form a protrusion provided with a receiving groove. The two upper supports are located at the two sides of the protrusion respectively. The middle of the bumper body is provided with an air inlet. The lower end of the bumper body is provided with an upward recess. The bumper-cart light assembly can carry a driving light assembly.

Abstract: A vehicle-side communication unit wirelessly communicates with a portable terminal and receives the personal information of a holder having the portable terminal. A personal information analysis unit analyzes the personal information of the holder received by the vehicle-side communication unit, and determines information necessary for responding to an accident and a contact who is to be notified of the information. An emergency contact unit is an element that sends the information necessary for responding to the accident to the contact determined by the personal information analysis unit.

Abstract: A method for maintaining an actuator for an airbag control device. The method has a step of impressing an electric current flow through the actuator using an electric voltage having a voltage value. In addition, the method has a step of ascertaining an electric measuring current through the actuator. Here, the electric measuring current through the actuator occurs on account of the impressed electric current flow through the actuator. In addition, the method has a step of executing a comparison of the electric measuring current through the actuator to a threshold value. Moreover, the method has a step of adjusting the voltage value of the electric voltage for impressing the electric current flow through the actuator as a function of the comparison.

Abstract: An energy-absorbing knee bolster frame (10) for a vehicle (1) comprises a longitudinal knee contact member (20), a first energy-absorbing transverse bracket member (30) and a second energy-absorbing transverse bracket member (40). The first energy-absorbing transverse bracket member (30) and the second energy-absorbing transverse bracket member (40) extend in a transverse direction (Y) and are spaced apart on the longitudinal knee contact member (20). The longitudinal knee contact member (20) has a knee contact surface (22) for receiving a part of a knee (80) of an occupant (P) upon a collision. The first energy-absorbing transverse bracket member (30) has a cross section defining an open profile, and is adapted at one end (32) to engage with a vehicle interior component (100), and includes a plurality of first deformation segments (34A-N) configured for absorbing energy generated by a knee impact.

Abstract: A support structure for an airbag apparatus includes an airbag apparatus having a bag holder, a pin, a pin holder, a damper holder, an elastic member, a motion transmitting portion, a motion receiving portion, and a noise suppressing portion. The pin includes a shaft portion passed through a mounting hole provided in the bag holder and a flange portion formed at the rear end of the shaft portion. The pin holder slidably covers the shaft portion. The damper holder is mounted to the airbag apparatus while covering the pin holder. The elastic member includes an elastic body portion. A gap is provided inside the motion transmitting portion. The noise suppressing portion is located between the gap and the pin holder, is made of a material softer than the pin holder, and has an inner diameter smaller than the inner diameter of the elastic body portion.

Abstract: An airbag includes a main inflatable section which includes a front-collision arresting face at the rear plane as deployed, a protruding inflatable section which includes an oblique-collision arresting face, and an arresting recess formed between the front-collision arresting face and oblique-collision arresting face. An outer tether is disposed on the outside of the airbag for preventing the protruding inflatable section from moving away from the main inflatable section at airbag deployment. The outer tether includes a side edge disposed towards the protruding inflatable section and a front edge disposed towards the main inflatable section. The side edge is jointed to an upper edge of the oblique-collision arresting face by a side joint which is formed over a generally entire area in a front and rear direction of the protruding inflatable section. The front edge is jointed to an upper edge of the front-collision arresting face by a front joint.

Abstract: A vehicle includes a frame; a plurality of ground engaging members; a motor; and at least one seat connected to the frame and being translatable between at least a forward position and a rearward position. The seat includes a seat body defining a belt aperture and a buckle aperture; and a seat belt assembly connected to the frame and including a seat belt extending through the belt aperture and having an end connected to the frame, a male buckle connector slidably connected to the seat belt, and a female buckle receptacle for receiving the male buckle connector, the female buckle receptacle extending through the buckle aperture and having an end connected to the frame, the seat belt assembly being operable with the seat when the seat is in at least both of the forward position and the rearward position.

Abstract: Various embodiment of the present disclosure provide a system and method for disabling a passive entry passive start system (PEPS) of a vehicle. In one embodiment, the system and method of the present disclosure enable a user of the vehicle to disable the standard PEPS operations so that the vehicle control module will not unlock the vehicle or automatically start the vehicle as it would under standard operation.

Abstract: A method for checking an authorization of a mobile communication device for operating a vehicle engine of a vehicle which includes determining a position of a mobile communication device. The position of the mobile communication device is inside or outside the vehicle. The method also includes receiving a digital key value from the mobile communication device and checking the authorization of the mobile communication device for operating the vehicle engine, based on the position of the mobile communication device and based on the digital key value.

Abstract: The present disclosure there is provided a pattern detection unit (300; 400) comprising a shift register (302; 402) configured to over-sample a multi-bit input signal such that each bit of the input signal is represented by a plurality of samples in the shift register (302; 402); and a correlator (304; 404) configured to compare a target pattern with two or more of the plurality of samples of each bit from the shift register (302; 402) in order to determine whether or not the input signal matches the target pattern.

Abstract: The present technology includes a washer system comprising a washer switch assembly and an electronic module. The washer switch includes a ground configured for electrical connection with a washer pump by way of a switch and a fuse contact configured to receive control signals from a power-mode relay. The electronic module includes a controller comprising a computer-readable storage device, and the controller is electrically isolated from the washer switch assembly and the washer pump in operation of the system.

Abstract: The present invention relates to a windshield monitoring system, comprising; a windshield (104) for a vehicle (100); a plurality of light emitters (108) forming an array, each emitter (108) arranged to direct a beam of light into an edge of the windshield (104) at an angle of incidence arranged to subject the beam of light to total internal reflection at a windshield to air interface to propagate the beam of light across the windshield to an opposing edge thereof, and the angle of incidence being arranged to refract the light beam away from the windshield at a windshield to contaminant interface; the system comprising a light detector arranged to detect that light from the beam of light has been refracted away from the windshield; and wherein the emitters (108) are separated substantially across a length of the windshield (104).

Abstract: A method of controlling a rear wiper system of a vehicle includes determining at least one current vehicle operating parameter with a vehicle controller in response to the rear wiper system being activated. The current vehicle operating parameter may include an on/off status of a front wiper system, a wiper speed of the front wiper system, a ground speed of the vehicle, or some other parameter dependent upon a body style of the vehicle. A delay time for the rear wiper system is defined, with the vehicle controller, based on one or more of the current vehicle operating parameters. The rear wiper system is controlled, with the vehicle controller, to repeatedly actuate the rear wiper system at time intervals separated by the defined delay time. Accordingly, the delay time of the rear wiper system is controlled by the vehicle controller as a function of the current vehicle operating parameters.

Abstract: A windshield wiper lifter includes a bar, a first clip and a second clip. The first clip can be coupled to the bar and can be configured to engage a first windshield wiper arm. The second clip can be coupled to the bar and can be configured to connect to a second windshield wiper arm spaced from the first windshield wiper arm.

Abstract: A very compact nozzle assembly 100, 200, 300 and spray head for an automotive washer nozzle is configured for inclusion into an automotive trim component. The compact nozzle assembly and spray head generate a very effective cleaning spray at a selected spray fan angle, yaw angle and roll angle and, in an exemplary embodiment, the spray fan is dual shear shaped, producing an even distribution, which may be varied from 30° to 120°. Spray head may be as small as 5 mm in diameter and be aimed to provide a spray with various spray aim, yaw and roll angles. The design accounts for better mold ability and versatility of application.

Abstract: A brake system may comprise an inboard brake and an outboard brake. A primary control channel may include a primary outboard (POB) channel coupled to the outboard brake. The primary control channel may include a primary inboard (PIB) channel coupled to the inboard brake. A secondary control channel may include a secondary outboard (SOB) channel coupled to the outboard brake. The secondary control channel may include a secondary inboard (SIB) channel coupled to the inboard brake. The primary control channel may be in communication with the secondary control channel.

Abstract: A fuzzy-based control system in a motor vehicle for controlling a speed comprises a brake pressure measurement unit, a signal processing unit and a control unit. The brake pressure measurement unit is adapted as a finite state machine to measure a current brake pressure of a brake of a wheel of the motor vehicle dependent on a trigger. The signal processing unit is adapted to estimate a current adhesion value ? between a tyre associated with the wheel and the current ground, based on the current brake pressure of the brake and further measurement values. The estimating comprises an inference based on fuzzy rules and a fuzzification, a subsequently a defuzzification of the inference. The control unit is adapted to control a speed of the motor vehicle or the brake pressure of the brake, based on the estimated current adhesion value ?.

Abstract: A braking system of a trailer and work machine includes a pressurized fluid supply, a hydraulic base valve fluidly coupled to the supply, and a pneumatic base valve fluidly coupled to the supply. A proportional control valve is also fluidly coupled to the supply, and it includes an outlet disposed in fluid communication with the inlets of the hydraulic base valve and the pneumatic base valve. The system further includes a hydraulic output configured to be fluidly coupled to a hydraulic braking system of a trailer, and a pneumatic output configured to be fluidly coupled to a pneumatic braking system of a trailer. The hydraulic output is fluidly coupled to the outlet of the hydraulic base valve, and the pneumatic output is fluidly coupled to the outlet of the pneumatic base valve.

Abstract: A method of detecting a leak in an air trailer brake circuit of a trailer includes providing a controller, a base valve, a first sensor, a second sensor, a leak control valve having a solenoid, a pneumatic fluid supply, a first brake output, and a second brake output. The method further includes supplying a first pressure to an inlet of the base valve and outputting a second pressure from an outlet of the base valve. The first pressure is detected with the first sensor and the second pressure is detected with the second sensor. The method also includes communicating the detected first pressure and the second pressure to the controller, and comparing a difference between first pressure and the second pressure to a threshold. A leak is detected in the air trailer brake circuit if the difference satisfies the threshold.

Abstract: A method of detecting a leak in a hydraulic trailer brake circuit of a trailer includes providing a controller, a base valve, a first sensor, a second sensor, a control valve having a solenoid, a reduction valve, a hydraulic fluid supply, a first brake output, and a second brake output. The method also includes supplying a first pressure to an inlet of the base valve and outputting a second pressure from an outlet of the base valve to the first brake output. The first pressure is detected by the first sensor and the second pressure is detected by the second sensor, and the detected first and second pressures are communicated to the controller. The difference between the first and second pressures are compared to a threshold, and a leak is detected in the hydraulic trailer brake circuit if the difference satisfies the threshold.