AL329 User Manual V1.00

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2) Wait while the scan tool validates the PID MAP.
3) If retrieved information displays on more than one screen, use the
SCROLL button, as necessary, until all the data have shown up.
Figure 3-11 Sample View Freeze Frame Screen
 If no freeze frame data is available, the message “No freeze frame
data stored!” displays.
4) Press ENTER/Exit button to return to previous screen.
Retrieve 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 emission compliance.
CAUTION: By clearing trouble codes you also clear 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 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
emission inspection.
There are two ways to retrieve I/M readiness status.