Full Product Manual

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Retrieving I/M Readiness Status
I/M Readiness function is used to check the operations of the Emission
System on OBD II compliant vehicles. It is an excellent function to use prior
to having a vehicle inspected for state emissions compliance.
NOTE
Clearing trouble codes also clears the readiness status for the individual
emission system readiness tests. In order to reset these monitors, the
vehicle must be driven through a complete drive cycle with no trouble codes
in memory. Amount of time needed for reset vary by vehicle.
Some latest vehicle models may support two types of I/M Readiness tests:
A. Since DTCs Cleared – indicates status of the monitors since the DTCs
are erased.
B. This Drive Cycle – indicates status of monitors since the beginning of
the current drive cycle.
An I/M Readiness Status result of “NO” does not necessarily indicate that
the vehicle being tested will fail the state I/M inspection. For some states,
one or more such monitors may be allowed to be “Not Ready” to pass the
emissions inspection.
 OK – indicates that a particular monitor being checked has completed
its diagnostic testing.
 INC – indicates that a particular monitor being checked has not
completed its diagnostic testing.
 N/A – the monitor is not supported on that vehicle.
1) Use the UP/DOWN scroll button to select I/M Readiness from
Diagnostic Menu and press OK button (Figure 4-1).
2) Wait while the scan tool validates the PID MAP.
3) If the vehicle supports both types of tests, then both types will be
displayed on the screen for selection.