MICROSCAN User Manual - Snap-on

Navigation Stopping Vehicle Communication
5.5.3 Warning Messages
Warning messages inform you when completing the selected action may result in an irreversible
change or loss of data.
5.5.4 Error Messages
Error messages inform you when a system or procedural error has occurred. Examples of
possible errors include a disconnected cable, a poor connection, or some other mechanical failure
that prevents the tool from communicating with the vehicle.
5.6 Stopping Vehicle Communication
Disconnecting the <strong>MICROSCAN</strong> unit from the data link connector (DLC) while it is actively
communicating with the vehicle may cause electronic control module (ECM) damage on some
models. Always follow the procedure below while viewing live data to end the diagnostic session
before separating the data cable from the DLC.
z To stop communications and disconnect from the vehicle:
1. Press the N button from any data screen.
The Exit menu opens.
2. Scroll to highlight the Exit icon on the menu.
GLOBAL OBD-2/EOBD
Current Data
Freeze Frame Data
Confirmed Codes
Clear Codes
O2 Monitors
Non-Cont. Monitors
Figure 5-11 Sample highlighted Exit icon
3. Press Y to select exit.
The display returns to the Global OBD2/EOBD menu.
4. Press N once again to open the Exit menu.
5. Again, highlight the Exit icon on the menu.
6. Press Y to select exit.
A “stop communications” message momentarily displays followed by the Main menu. The
message indicates that the electronic connection between the <strong>MICROSCAN</strong> unit and the
ECM has been terminated. To verify, open the Exit menu. The Exit icon should no longer be
available as a menu option.
7. From the Main menu, press the Power button to shut down the <strong>MICROSCAN</strong> unit.
8. Disconnect the data cable from the vehicle DLC.
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