3. Introduction
The EQP-103 is specially designed to support all 9 OBDII service modes,
including live data, O2 sensor test and more, on OBDII / EOBD compliant
cars, SUVs, light-duty truck and mini-vans sold worldwide since 1996.
3.1 About OBDII / EOBD
What is OBD?
The first generation of On-Board Diagnostics or OBD I was introduced in
early 1980's to control engine functions and diagnose engine problems
by vehicle manufacturers. As the OBDI lacked standardisation of
protocols and interface, it allowed different interpretations among
vehicle manufacturers.
OBDII, the second generation On-Board Diagnostics, improved in both
capability and standardisation, is a system developed in mid 1990s by
the Society Automotive Engineers (SAE) to standardise automotive
electronic diagnosis. EOBD is European version of OBDII required in
Europe since 2001.
The OBDII standard specifies:
•
A generic diagnostic port (Data Link Connector) and its pinout;
•
The protocols and the messaging format;
•
A standard list of vehicle parameters identifications;
•
A standard list of diagnostic trouble codes (DTCs);
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