User's Manual

G-scan2 User Manual

1.3. Manual reading and erasing for old vehicles

Reading and erasing the codes from the old vehicles of 1980’s and early 1990’s using G-

scan2 or the other diagnostic tools may not be possible as the old control systems do not

support bi-directional communication. Only manual reading and erasing are possible for those

vehicles.

1.4. Advanced DTC functions for new vehicles

The late model vehicles provide diversified information through the DTC Analysis function.

For example the Toyota vehicles support switching to Check Mode where the control unit

applies narrower allowance for fault code recognition in order to check the potential trouble

codes with the defects of the marginal level.