Innova 3120d, Owner'S Manual, Page: 98 / 131

GM OBD1 Systems
ERASING DTCs
96 3120d
2. Turn the ignition ON. DO NOT start the engine.
3. Press and release the ERASE button. A confirmation message
shows on the LCD display.
„ If you are sure you want to proceed,
use the UP
and DOWN
buttons, as necessary, to highlight
YES, then press the ENTER
button.
„ If you do not want to proceed, use
the UP
and DOWN buttons,
as necessary, to highlight NO, then
press the ENTER
button to
cancel the erase procedure.
„ If you do not want to continue with the erase process, press the
M button to exit the erase function.
4. If you chose to erase DTCs, a status
screen displays while the erase function
is in progress.
„ If the erase was successful, a con-
firmation message shows on the
Diagnostic Tool’s LCD display.
Press the ENTER
button to exit.
Due to the differences in computer
systems, the Diagnostic Tool can
be used to erase codes for some
vehicles, while others require
codes to be erased manually. If
the “To erase DTC’s consult the
vehicle’s service repair manual...”
screen displays, you must consult
the vehicle’s service repair manual
for procedures to erase DTCs.
„ If the erase was not successful, an
advisory message shows on the LCD
display. Verify that the Diagnostic Tool
is properly connected to the vehicle's
DLC and that the ignition is ON. If the
erase process still does not complete,
turn the ignition OFF, wait 10 seconds,
then turn back ON and repeat steps 2
and 3.
„ If the erase process fails after three
attempts, the message “Contact
Technical Support” displays.
- Press the M button to return to
the GM OBD1 Menu.