(With the advance payment starting on the day following the customer’s payment order, and for other methods of payment starting on the day following the contract)
The open cable ends (+/-) of the device manufacturer’s optional power cable are linked to this adaptor cable. An alternative is to use the optional Superseal plug connections (01-015-0090-0).
Distributors who are passionate about Touratech are present in more than 50 nations globally. Our distributor list will help you locate a partner for your nation.
In This Article...
BMW CAN bus?
This tried-and-true vehicle electronics with Single Wire System (SWS) has been installed in motor vehicles millions of times and offers a vast number of benefits. It minimizes cabling and uses CAN (Controller Area Network) technology to connect all control units to a single network, substantially streamlining the extensive diagnosis procedure. Additionally, it eliminates the need for traditional safety fuses because the system immediately shuts down any malfunctioning components. Additionally beneficial features of this sophisticated motorbike electrical system include full diagnostic capability, increased interference immunity, and reduced cable harness weight.
The BMW Motorrad Single Wire System and CAN bus technology together represent a data network idea that only needs a single data line. This connection connects different control units and can be compared to stations on a bus route (thus the name “bus” technology”), giving users continuous access to all system data.
The fundamental idea behind this technology is that, regardless of how they will be used in the future, all control units, sensors, and consumers are connected to one another in a network over a single shared channel. With the help of this network, all data is always accessible to all of the components connected to it.
The SWS data is also available to riders, who can access a wealth of data via the “Info flat screen.” The engaged gear, gasoline level, oil temperature, the time of day, and the remaining mileage till reaching the fuel reserve are all displayed on the digital display. A photocell measures the ambient light level and changes the device’s lighting automatically as necessary. Fans of analog displays will also enjoy the cockpit, which has two spherical gauges with white dials that show the engine and vehicle speeds.
CAN bus issue
Poor wiring, improper termination, or the usage of different frequencies on the same bus are the main causes of CANBUS communication issues. A bus structure called the Controller Area Network (CAN) was initially created for use in automotive applications, but it has now spread to other fields.
How does a CAN bus system in a car operate?
Nodes are the units that make up a CAN bus. A transceiver, which modifies the signal levels of data sent and received by the node, a CPU, and a CAN controller make up each node. Data can be sent and received by all nodes, but not simultaneously.
Data cannot be sent directly between nodes. Instead, they send their data over the network so that any node to which it was addressed can access it. Lossless bitwise arbitration is used by the CAN protocol to settle disputes on the bus.
The nodes are all synchronized to sample data from the network at the same time. However, unlike a synchronous bus like EtherCAT, for instance, CAN does not transfer data along with clock (time) data.
There are four different types of frames used by CAN to send data:
- Transferring data to one or more receiver nodes using data frames
- Requesting data from other nodes using remote frames
- Error frames document mistakes.
- Report on overload frames overload circumstances
Standard and extended message lengths are the two options available. The additional 18-bit identification in the arbitration field is what makes a substantial impact.
A CAN bus socket: What is it?
A CAN bus participant is connected to the CAN bus wire via the CAN bus connector. The connector features a built-in, connectable termination resistor and may be placed fast.
You can choose the CAN bus connector from Helmholz for transmission rates of up to 1 Mbps. The CAN bus interface (SUB-D socket, 9-pin) of the CAN bus participants is where the CAN bus connector is plugged in. The 6-pin screw terminals are used to connect the CAN bus cables. The connector’s use as a node or at the segment end is selected using a slide switch. The switch can be used even when it is mounted. The scene is easily discernible. When the incoming and outgoing buses are connected, the connector must be operated in node setting (“OFF”). This renders the terminating resistor useless. The connection needs to be set on the segment’s first and last (outermost) members, respectively, for the segment to end (“ON”). In this scenario the terminating resistor is connected on the incoming bus, while the outgoing bus is disconnected. The wider ambient temperature range of -25 °C to +85 °C is supported by the CAN connectors.
In automobile stereos, what does CAN bus mean?
The factory-installed stereo head unit in the majority of earlier vehicles was a separate gadget that had no connection to the rest of the vehicle. That made changing the radio without having any negative effects on the rest of the automobile relatively simple. However, entertainment systems in more recent vehicles are frequently tightly connected with the rest of the vehicle’s electronics. The controls for the climate control system, for instance, might be found on your car’s infotainment screen. Your music may be controlled by buttons on your steering wheel. That implies that adding an aftermarket stereo may have an impact on a variety of other aspects. RND ASH circumvented this by integrating his Android head unit into his earlier Mercedes’ CAN bus.
All contemporary cars come equipped with a controller area network (CAN) bus, which enables communication between the car’s different technological systems. The CAN bus is typically used to connect everything, including the engine control unit and the power window controls. Your turn signals were likely linked directly to the stalk switch by a relay on an earlier vehicle. Today, the switch in the stock may merely be a component of the CAN bus, which would then send an instruction to the indicator light to turn on. You can read the data being transmitted between systems and inject your own commands if you can connect to that CAN bus and comprehend the messaging protocol.
RND ASH is currently reading and sending data over the CAN bus. He linked an Arduino Uno with two CAN bus shields because his Android head unit isn’t usually capable of doing that. He had to do a lot of programming before he could decipher the messages on the CAN bus. He then created a unique interface to present the data on the Android head unit. For example, it can display the engine’s current temperature, RPM, fuel usage, climatic settings, and even the location of the windows.
It was necessary to insert messages into the CAN bus in order to control the car’s systems using the Android head unit. To begin with, RND ASH has to perform extensive reverse engineering to figure out how messages are encoded. Through that Arduino and CAN bus shield, he was then able to transmit his own messages. This provided him total command of all systems linked to the CAN bus of the vehicle. He switched the external lights on and off in a manner, for instance, to produce a “light show.” The status panel in the center of the dash and the steering wheel media controls were integrated as the last step. After all of this hacking, he is now able to display whatever he wants on a screen that wasn’t even working before. Depending on the individual automobile model, the details will vary greatly, but RND ASH’s work is a fantastic illustration of what you can accomplish with your CAN bus.
What purposes serve CAN buses?
Vehicles are intricate machinery with several interconnected parts that require communication with one another. A Controller Area Network was created as a result. Tom Denton describes the technology’s operation.
These days, a Controller Area Network (CAN) bus is a standard component of all contemporary automobiles, even the newest electric vehicles. The engine, transmission, and brakes may all communicate with one another thanks to the vehicle’s electronic communications system. It serves as the brain of the automobile.
The CAN bus, developed by Bosch and introduced on the Mercedes-Benz S-Class in 1991, initially connected five engine control units (ECUs) with the goal of enhancing performance and safety by facilitating a quicker exchange of real-time data within the vehicle.
These messages can be combined (or multiplexed) using the CAN bus network, which requires less electrical wire (and weight) overall. It was an improvement over the previous technology, which consisted of two-way receivers and transmitters that were incapable of handling many simultaneous communications.
Any networked device can construct a “data frame,” the common message format, and transmit it consecutively over a CAN bus. When multiple devices broadcast at once, the one with the highest priority transmits first while the rest wait. All ECU nodes in the network receive frames, which are composed of an ID, a message, and additional components like error correction bits.
Most automobiles include a twisted pair of tiny wires called CAN high (CAN-H) and CAN low that make up the physical network (CAN-L). Additionally, fiber optics and coaxial wires can be employed.
Most cars today include multiple networks for the body, the powertrain, and the infotainment system, for example, with a gateway to manage data flow. Nowadays’ cars may contain dozens of ECUs, as opposed to the S-Class from 1991, including ones for the engine, the transmission, the airbags, the ABS, the traction control, and the stability control. The CAN bus enables real-time communication between various components, giving priority to the most crucial data and enhancing vehicle performance and safety.
the CAN bus bypass?
With the advent of power protection features like PWM and bulb failure warning systems, some modern vehicles are unable to always supply a stable 12 volts from the reverse or brake light circuit, which will affect the operation of an attached accessory.
A clean ignition live feed is connected to a small, low current relay that the CAN Bus bypass relay uses to power the accessory. This resolves the problem. Only the bypass relay is switched by the vehicle’s reverse light or brake light circuit, which then turns on the parking sensor kit or rear camera.
Note:
For usage as a universal attachment, the output connector that some parking sensor kits plug into directly must be removed.