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2. On-board diagnostics - Wikipedia

   en.wikipedia.org/wiki/On-board_diagnostics

   A PC-based OBD analysis tool that converts the OBD-II signals to serial data (USB or serial port) standard to PCs or Macs. The software then decodes the received data to a visual display. Many popular interfaces are based on the ELM327 or STN [ 41 ] OBD Interpreter ICs, both of which read all five generic OBD-II protocols.

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. [2] When a vehicle detects a problem, it generates a DTC code which is a unique code that corresponds to the specific problem ...

4. ELM327 - Wikipedia

   en.wikipedia.org/wiki/ELM327

   The ELM327 abstracts the low-level protocol and presents a simple interface that can be called via a UART, typically by a hand-held diagnostic tool or a computer program connected by USB, RS-232, Bluetooth or Wi-Fi. [2] New applications include smartphones. [3] There are a large number of programs available that connect to the ELM327. [4] [5]

5. Best OBD-II Scanners for 2024, Tested - AOL

   www.aol.com/best-obd-ii-scanners-2023-223000386.html

   Instead, turn to an OBD-II scanner. OBD stands for On-board Diagnostics, and an OBD-II scanner diagnoses your car's vital systems, providing valuable information about warning lights, airbags, ABS ...

6. Data link connector - Wikipedia

   en.wikipedia.org/wiki/Data_link_connector

   The data link connector (DLC) is the multi-pin diagnostic connection port for automobiles, trucks, and motorcycles used to interface a scan tool with the control modules of a given vehicle and access on-board diagnostics and live data streams. [1] Prior to 1996, many OBD-I data link connector's were in the engine compartment, usually near the ...

7. ALDL - Wikipedia

   en.wikipedia.org/wiki/ALDL

   Most professional scan tools require a large database of vehicle definitions. [ 5 ] The signaling of ALDL is similar to the RS-232 serial data standard; differing in the voltages used to denote logical one (usually 0 V DC) and logical zero (either +5 V DC or +12 V DC), and that unlike RS-232, both transmit and receive functions are on the same ...