User Manual

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Figure 3-26 Sample View Freeze Frame Screen
 If there is no freeze frame data available, an advisory message “No
freeze frame data stored!” shows on the display.
4) If you want to view full name of a PID, use the UP/DOWN scroll button
to select the PID, and press the HELP button.
5) Press ESC 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 compliance to a state emissions program.
NOTE
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. Times for reset vary depending on 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.
There are two ways to retrieve I/M readiness status.