Equus 3140 - Scan Tool CanOBD2&1 Kit - Manual (Page 33)

CanOBD2&1 31
E
OBD2 Systems
I/M READINESS TESTING
3. Press and release the ERASE but-
ton. A confirmation message shows on
the LCD display.
- If you are sure you want to proceed
press the ERASE button again to
erase DTCs from the vehicle’s com-
puter.
- If you do not want to continue with the erase process, press the
POWER/LINK button to exit the erase mode.
4. If you chose to erase DTCs, a progress
screen displays while the erase function
is in progress.
■ If the erase was successful, a confir-
mation message shows on the dis-
play. Press the POWER/LINK
button to return to the DTC screen.
■ If the erase was not successful, an
advisory message shows on the dis-
play. Verify that the CanOBD2&1
Scan Tool is properly connected to
the vehicle’s DLC and that the igni-
tion is on, then repeat steps 2 and 3,
above.
Erasing DTCs does not fix the problem(s) that caused the
code(s) to be set. If proper repairs to correct the problem that
caused the code(s) to be set are not made, the code(s) will
appear again (and the check engine light will illuminate) as
soon as the vehicle is driven long enough for its Monitors to
complete their testing.
I/M READINESS TESTING
I/M is an Inspection and Maintenance program legislated by the
Government to meet federal clean-air standards.
The program requires that a vehicle be taken periodically to an
Emissions Station for an "Emissions Test" or "Smog Check,” where the
emissions-related components and systems are inspected and tested
for proper operation. Emissions Tests are generally performed once a
year, or once every two years.
On OBD 2 systems, the I/M program is enhanced by requiring vehicles to
meet stricter test standards. One of the tests instituted by the Federal
Government is called I/M 240. On I/M 240, the vehicle under test is driv-
en under different speeds and load conditions on a dynamometer for 240
seconds, while the vehicle's emissions are measured.