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259
Troubleshooting
If the VCMI device cannot communicate with the MaxiSys Tablet:
Ensure the VCMI device is properly connected to the MaxiSys Tablet via Wi-Fi or
with the supplied USB cable.
Ensure the pin number is set properly.
Ensure the ignition is in the Key ON position.
Restart tablet and reconnect the VCMI if communication continues to fail .
Glossary
Vehicle Bus
A vehicle bus is a specialized internal communications network that interconnects
components inside a vehicle (e.g., automobile, bus, train, industrial or agricultural vehicle,
ship, or aircraft). Protocols include Controller Area Network (CAN), Local Interconnect
Network (LIN) and others.
CAN Bus
A Controller Area Network (CAN bus) is a robust vehicle bus standard designed to allow
microcontrollers and devices to communicate with each other in applications without a
host computer.
SAE International
Initially established as the Society of Automotive Engineers, is a U.S.-based, globally
active professional association and standards developing organization for engineering
professionals in various industries. Principal emphasis is placed on transport industries
such as automotive, aerospace, and commercial vehicles.
SAE J1708
SAE J1708 is a standard used for serial communications between ECUs on a heavy duty
vehicle and also between a computer and the vehicle. With respect to Open System
Interconnection model (OSI), J1708 defines the physical layer. Common higher layer
protocols that operate on top of J1708 are SAE J1587 and SAE J1922. The protocol is
maintained by SAE International.
SAE J1939
Society of Automotive Engineers standard SAE J1939 is the vehicle bus recommended
practice used for communication and diagnostics among vehicle components. It is used
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