NT201 OBDII/EOBD Code Reader User’s Guide_English Version_V1.00
Figure 4-13 Sample Freeze Data Screen
3. Use the ESC key to return to Diagnostic Menu。
4.5 Read I/M Readiness Status Data
I/M Readiness option allows to view a snapshot of the operations for the emission system on
I/M Readiness is a useful function used to check if all monitors are OK or N/A. The vehicle’s
computer performs tests on the emission system during normal driving conditions. After a specific
amount of drive time, the computer’s monitors decide if the vehicles emission system is working
There are two types of I/M Readiness tests:
● Since DTCs Cleared - shows status of the monitors since the DTCs were last cleared.
● This Drive Cycle - shows status of monitors since the start of the current drive cycle.
When the monitor’s status is:
● OK - vehicle was driven enough to complete the monitor.
● INC (Incomplete) - vehicle was not driven enough to complete the monitor.
● N/A (Not Applicable) - vehicle does not support that monitor.
There are two ways to retrieve I/M Readiness Status data:
● One-click I/M readiness key
● Typical way: select I/M Readiness from Diagnostic Menu
● To review I/M Readiness status, make sure that the ignition key is switched to ON with the
● Not all monitors are supported by all vehicles.
To retrieve I/M Readiness Status data by one-click I/M readiness key:
1. Press the One-Click I/M Readiness Key on the keypad and the following screen displays.
Figure 4-14 Sample Diagnostic Menu Screen
2. Colored LED and build-in beeper provide both visual and audible reminders for emission
check and DTCs. Below is the intepretation of the LED and build-in beeper.
● Green - Indicates that engine systems are “OK” and working properply (the number of
Monitors equipped with the vehicle which have run and performed their self-diagnostic
testing is in the allowed range. MIL is off. ).No stored and pending DTCs exist. The
vehicle is ready for an Emissions Test.
● Yellow - The tool finds a possible problem. It indicates the following two conditions:
(1) Pending DTCs exist. Please check the I/M Readiness test result screen and use the
Read Codes function to view detailed codes information.
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