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on-board diagnostic (OBD) system for emission control in accordance with Annex XI.
Note that here "European Union" means countries which were members of the EU in 2003.
Other vehicles
If your vehicle does not fall into any of the above categories, look under the hood and try to locate
a label (Fig. 1) that explicitly states that the vehicle was designed to comply with OBD-II
legislation.
Fig. 1 - Vehicle Emission Control Information Label
In this case, OBD-II is used as a general term and can mean any of the following:
OBD II (California ARB)
EOBD (European OBD)
JOBD (Japanese OBD)
You may also consult your vehicle's owner's manual and perhaps contact your local dealer.
However, be aware of the fact that many dealers do not know the difference between OBD and
OBD-II.
If the vehicle is not OBD-II compliant, you cannot use a generic OBD-II scan tool such as U480 to
obtain diagnostic information from your vehicle.
But my car has the 16-pin OBD connector, shouldn't it be OBD-II compliant?
No, not necessarily. A lot of European and Asian manufacturers equipped their vehicles with
D-shaped 16-pin connectors long before they began installing OBD-II systems on those vehicles.
One curious thing to note here is the fact that most non-EOBD compliant vehicles had a DLC that
does not fully conform to SAE J1979. Compare figures 2 and 3, and notice the "ears" on the
non-EOBD compliant Ford Focus.
Fig. 2 - Ford Escort DLC
(courtesy of
, UK)
Fig. 3 - J1962 Vehicle Connector, Type A
(courtesy of
2.3 Which OBD-II protocol is supported by my vehicle?
All cars and light trucks built for sale in the United States after 1996 are required to be OBD-II
compliant. The European Union OBD legislation is somewhat more complicated.
An OBD-II compliant vehicle can use any of the five communication protocols: J1850 PWM, J1850
VPW, ISO9141-2, ISO14230-4 (also known as Keyword Protocol 2000), and more recently,
ISO15765-4/SAE J2480 (a "flavor" of CAN). US car manufacturers were not allowed to use CAN
until model year 2003.
UIF Technology Co., LTD .
2
There are two types of diagnostic link connectors (DLCs) defined by SAE J1962 - Type A and Type
