Abstract: Various embodiments of a system and method of controlling an electronic parking brake system for an air braked vehicle are disclosed. A dash switch module receives a signal indicative of a parking brake request. The dash switch module transmits a parking brake control message using a first communication path in response to the parking brake request. A braking system controller transmits a check message in response to the parking brake control message using a second communication path. The dash switch module transmits a confirmation message using the second communication path in response to the confirmation message. The brake system controller transmits a control signal to the park control module to park or un-park the vehicle in response to the confirmation message.

Abstract: An electro-pneumatic device includes a sensor portion and a valve portion. The sensor portion, which includes a sensor, receives and transmits electronic control signals of a plurality of frequencies. The sensor portion is powered by a first of the frequencies of the received control signals. The valve portion electrically communicates with the sensor. The valve portion includes a valve that is alternately set to an open state and a closed state based on a second of the plurality of frequencies of the received control signals. The sensor senses a delivery pressure of the valve and transmits electronic data signals representing the delivery pressure at a third of the plurality of frequencies.

Abstract: A dash switch module for a vehicle includes a controller transmitting a parking brake control request message to a vehicle ECU, a signal receiving component receiving a transmitted status signal from a sensor on the vehicle indicating a status of a vehicle component, and a processor receiving the transmitted status signal from the signal receiving component. The processor generates a dash switch module signal based on the transmitted status signal. The processor transmits the dash switch module signal to the vehicle electronic control unit.

Abstract: When detecting unacceptably large airgaps between wheel speed sensors and their exciter rings on wheel ends of a vehicle, wheel speed sensor output is filtered and monitored to detect signal amplitudes that correspond to the airgaps. When signal peak amplitude below a predetermined threshold is detected, the airgap is too large. Wheel ends having unacceptably large air gaps are indicated to the driver or technician via blink sequences (e.g., on an electronic stability program (ESP) indicator light or other suitable indicator), wherein each wheel end is associated with a unique blink sequence.

Abstract: A secondary parking apparatus is provided for a vehicle having components of a parking brake system, components of an anti-lock brake system (ABS). and a manually-operable device. The secondary parking apparatus comprises an electronic controller arranged to (i) monitor the manually-operable device to detect an operator intent signal to apply parking brakes of the parking brake system, (ii) receive a combination of one or more signals indicative of a fault condition of the vehicle, and (iii) provide one or more control signals to be applied to components of the ABS to selectively exhaust air pressure from components of the ABS to atmosphere so that parking brakes of the parking brake system are applied to park the vehicle when both the operator intent signal and the combination of one or more signals indicative of a fault condition of the vehicle are detected.

Abstract: A vehicle electronic control unit includes a power input port, which receives electric power from a vehicle battery, and a power output port, which provides electric power to a vehicle electronic device including an antenna. The electronic device receives data transmissions from a vehicle sensor. The power output port provides substantially uninterrupted electric power from the vehicle battery to the vehicle electronic device. A communication port is electrically connected to a vehicle communication bus. The communication port receives data transmissions from the vehicle electronic device via the communication port. An electronic component, electrically connected to the communication port, is initially in a first state when a vehicle ignition is off. The electronic component, while in a second state and while the vehicle ignition is off, receives additional data transmissions from the vehicle electronic device indicating statuses of respective vehicle sensors.

Abstract: A vehicle electronic control unit includes a power input port, which receives electric power from a vehicle battery, and a power output port, which provides electric power to a vehicle electronic device including an antenna. The electronic device receives data transmissions from a vehicle sensor. The power output port provides substantially uninterrupted electric power from the vehicle battery to the vehicle electronic device. A communication port is electrically connected to a vehicle communication bus. The communication port receives data transmissions from the vehicle electronic device via the communication port. An electronic component, electrically connected to the communication port, is initially in a first state when a vehicle ignition is off. The electronic component, while in a second state and while the vehicle ignition is off, receives additional data transmissions from the vehicle electronic device indicating statuses of respective vehicle sensors.

Abstract: A component to be mounted on a vehicle includes a housing, a pair of component mounting passages, defined in the housing, aligning with a pair of respective vehicle mounting passages when the component is any of a plurality of orientations with respect to the vehicle, and a component orientation element, on the housing. The component orientation element cooperates with a vehicle orientation element only when the component is in one of the plurality of orientations with respect to the vehicle. A hub on the component orientation element acts to tune the component orientation element for attenuating vibration received by the component orientation element from the vehicle.

Abstract: An electro-pneumatic device includes a sensor portion and a valve portion. The sensor portion, which includes a sensor, receives and transmits electronic control signals of a plurality of frequencies. The sensor portion is powered by a first of the frequencies of the received control signals. The valve portion electrically communicates with the sensor. The valve portion includes a valve that is alternately set to an open state and a closed state based on a second of the plurality of frequencies of the received control signals. The sensor senses a delivery pressure of the valve and transmits electronic data signals representing the delivery pressure at a third of the plurality of frequencies.

Abstract: A component to be mounted on a vehicle includes a housing, a pair of component mounting passages, defined in the housing, aligning with a pair of respective vehicle mounting passages when the component is any of a plurality of orientations with respect to the vehicle, and a component orientation element, on the housing. The component orientation element cooperates with a vehicle orientation element only when the component is in one of the plurality of orientations with respect to the vehicle. A hub on the component orientation element acts to tune the component orientation element for attenuating vibration received by the component orientation element from the vehicle.