Full Product Manual

Figure 3-26 Sample View Freeze Frame Screen

 If no freeze frame data is available, the message “No freeze frame

data stored!” displays.

4) 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.