F3SN USER MANUAL
4
Find the diagnostic socket of the car, check, ensure the intact of the diagnostic socket line, and connect the
main unit for diagnosis. Otherwise, do not test to avoid damage to the main unit or use a multimeter to
measure the voltage of diagnostic socket
if necessary.
Instrument Use Notes
When testing FCAR series products, users must handle with care and be away from heat and electromagnetic
field, to avoid interference with the main unit.
The matched touch pen, rather than any other sharp tool, is recommended to click the touch screen.
When electrical components are energized, you cannot disconnect the circuit to prevent the self-inductance,
mutual inductance attacking sensors and automotive ECU.
When electrical equipment works, avoid putting magnetic objects close to the vehicle control unit, otherwise
the vehicle control unit may be damaged.
When dismounting vehicle control unit or electrical components, it must be carried out 1 minute after
turning off the ignition switch.
