Autel AutoLink AL539B [51/92] Retrieving i m readiness status

Figure 5.32

5) Press ESC button to return to previous screen.

5.5 Retrieving I/M Readiness Status

I/M Readiness function is used to check the operations of the

Emission System on OBD2 compliant vehicles. It is an excellent

function to use prior to having a vehicle inspected for

compliance to a state emissions program.

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. 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.

 ―OK‖ -- Indicates that a particular monitor being checked has

completed its diagnostic testing.

……………… ..FUELSYS1……… …….

Fuel System 1 Status