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2. OBD-II PIDs - Wikipedia

   en.wikipedia.org/wiki/OBD-II_PIDs

   Heavy duty vehicles (greater than 14,000 lb or 6,400 kg) made after 2010, [1] for sale in the US are allowed to support OBD-II diagnostics through SAE standard J1939-13 (a round diagnostic connector) according to CARB in title 13 CCR 1971.1. Some heavy duty trucks in North America use the SAE J1962 OBD-II diagnostic connector that is common ...

3. Scan tool - Wikipedia

   en.wikipedia.org/wiki/Scan_tool

   OBD 1 vs OBD 2 the vehicle will also dictate what the scan tool is able to display. If the vehicle is equipped with OBD 1 it will have significantly less available data when compared to a vehicle equipped with OBD 2. [3] When a vehicle detects a problem, it generates a DTC code which is a unique code that corresponds to the specific problem ...

4. On-board diagnostics - Wikipedia

   en.wikipedia.org/wiki/On-board_diagnostics

   OBD-II standardization was prompted by emissions requirements, and though only emission-related codes and data are required to be transmitted through it, most manufacturers have made the OBD-II Data Link Connector the only one in the vehicle through which all systems are diagnosed and programmed. OBD-II Diagnostic Trouble Codes are 4-digit ...

5. ELM327 - Wikipedia

   en.wikipedia.org/wiki/ELM327

   The ELM327 is a programmed microcontroller produced for translating the on-board diagnostics (OBD) interface found in most modern cars. The ELM327 command protocol is one of the most popular PC-to-OBD interface standards and is also implemented by other vendors.

6. Lucas 14CUX - Wikipedia

   en.wikipedia.org/wiki/Lucas_14CUX

   The code and data used by the microprocessor is stored in either a 27C128 or 27C256 EPROM (depending on the revision of the ECU), which is soldered in place on most PRC units and socketed in some late PRC units as well as AMR units. Only half of the 32KB PROM space is used, so the code/data image appears twice, duplicated in the upper half.

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