7
If decoder can not communicate with the
vehicle ECU (engine control unit),
3. OBD II diagnosis
1.
2.
3.
4.
5.
and a vehicle emission control information
label states the vehicle is accorded with
OBD II standard.
Turn off ignition switch.
Find the vehicle 16 pin data link
connector (DLC).
Insert OBD II wire to vehicle DLC.
Turn on ignition switch. Engine stops or
runs.
Press Return/Confirm button to enter
diagnostic menu. A series of OBD2
protocol information will be displayed on
the display screen, until the vehicle
protocol is detected.
