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OBD-II PIDs (On-board diagnostics Parameter IDs) are codes used to request data from a vehicle, used as a diagnostic tool.. SAE standard J1979 defines many OBD-II PIDs. All on-road vehicles and trucks sold in North America are required to support a subset of these codes, primarily for state mandated emissions inspections.
A controller area network (CAN) is a vehicle bus standard designed to enable efficient communication primarily between electronic control units (ECUs). Originally developed to reduce the complexity and cost of electrical wiring in automobiles through multiplexing, the CAN bus protocol has since been adopted in various other contexts.
This was true as of 2000. Since then, CAN has been included, the chipset for J1939 has been clocked faster [clarification needed], and 16-bit addresses (PGN) have replaced 8-bit addresses. J1939, ISO 11783 and NMEA 2000 all share the same high level protocol. SAE J1939 can be considered the replacement for the older SAE J1708 and SAE J1587 ...
PID $23 is not limited to diesel engines, any engine where the fuel rail pressure is greater than that allowed by PID $22 may use it, gasoline direct injection for instance. Manufactures are required to report on one of the 3 fuel rail pressure PIDs PIDs $0A $22 or $23 if a fuel rail pressure sensor is fitted to their vehicles.
A Piping and Instrumentation Diagram (P&ID) is a detailed diagram in the process industry which shows process equipment together with the instrumentation and control devices.
Challan or Chalan is a common Hindi word (चालान, cālān) that has become an Indian English technical word used officially in many professional, especially financial transactions. It usually means an official form or receipt of acknowledgement or other kind of proof document, piece of paperwork, police citation, etc.
Data is transferred across the bus in fixed-form messages of selectable lengths. The master task transmits a header that consists of a break signal followed by synchronization and identifier fields. The slaves respond with a data frame that consists of 2, 4 or 8 data bytes plus 3 bytes of control information.
The Vehicle Area Network (VAN) is a vehicle bus developed by PSA Peugeot Citroën and Renault. It is a serial protocol capable of speeds up to 125 kbit/s and is standardised in ISO 11519-3. [1] At the media layer, VAN is a differential bus with dominant and recessive states signalling ones and zeros much like CAN bus.