User's Manual

G-scan2 User Manual
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2-8. User Information
G-scan2 user information can be reviewed.
. The user information can be inputted or revised from the PC Utility’s Configuration menu.
2-9. Self-test
In case the G-scan2 fails in performing the diagnostic functions properly, Self Test function
helps the user identify whether the communication problem is caused by the defective DLC
main cable or the malfunction of the base unit. (This function does not tell which part of G-
scan2 is defective)
Self-test is designed based on the Loop Back system, with which G-scan2 sends off signals
from the base unit through the DLC cable, and the self-test adapter returns the signal back to
the base unit. By sending signals from different channels and lines, and verifying the
correctness of every signal echoed from this looped connection in each case, it becomes
identifiable where the communication failure originated.
Caution
 Loop back test is not supported in some vehicles with High Speed CAN, Low Speed
CAN and SAE J1708 communication systems.
 Self-test can be used with OBD-II / EOBD compliant cars only. Cannot be used with
OBD1 generation cars with non-standard adapters.