Equus 3110 - CanOBD2 Diagnostic Tool - Manual (Page 46)

44 CAN OBD2
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Emissions Inspection and Maintenance (I/M) Readiness
Monitor Status Information
I/M Readiness Monitor Status shows which of the vehicle's Monitors
have run and completed their diagnosis and testing, and which ones
have not yet run and completed testing and diagnosis of their desig-
nated sections of the vehicle's emissions system.
■ If a Monitor was able to meet all the conditions required to enable it
to perform the self-diagnosis and testing of its assigned engine sys-
tem, it means the monitor "HAS RUN.”
■ If a Monitor has not yet met all the conditions required for it to per-
form the self-diagnosis and testing of its assigned engine system; it
means the Monitor "HAS NOT RUN.”
The Monitor Run/Not Run status does not show whether
or not a problem exists in a system. Monitor status only
indicates whether a particular Monitor has or has not run
and performed the self-diagnosis and testing of its asso-
ciated system.
Performing I/M Readiness Quick Check
When a vehicle first comes from the factory, all Monitors indi-
cate a “HAVE RUN” status. This indicates that all Monitors
have run and completed their diagnostic testing. The “HAVE
RUN” status remains in the computer's memory, unless the
Diagnostic Trouble Codes are erased or the vehicle's com-
puter memory is cleared.
The Code Reader allows you to retrieve Monitor/System Status Infor-
mation to help you determine if the vehicle is ready for an Emissions
Test (Smog Check). In addition to retrieving Diagnostic Trouble Codes,
the Code Reader also retrieves Monitor Run/Not Run status. This infor-
mation is very important since different areas of the state/country have
different emissions laws and regulations concerning Monitor Run/Not
Run status.
Before an Emissions Test (Smog Check) can be performed, your vehi-
cle must meet certain rules, requirements and procedures legislated
by the Federal and state (country) governments where you live.
1. In most areas, one of the requirements that must be met before a
vehicle is allowed to be Emissions Tested (Smog Checked) is that
the vehicle does not have any Diagnostic Trouble Codes present
(with the exception of PENDING Diagnostic Trouble Codes).
2. In addition to the requirement that no Diagnostic Trouble Codes be
present, some areas also require that all the Monitors that a partic-
ular vehicle supports indicate a "Has Run" status condition before
an Emissions Check may be performed.
Using the Code Reader
I/M READINESS TESTING