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Figure 6-9
Press OK to erase DTCs, and the following screen will appear:
Figure 6-10
Follow the on-screen prompts to turn the ignition on with engine o, press OK
to clear the DTCs.
Note: When data is erased from the vehicle’s computer memory, the I/M
Readiness Monitor Status program resets the status of all Monitors to a “Not
Completed” status. To set all of the Monitors to a “Completed” status, an OBD
II Drive Cycle must be performed. Refer to your vehicle’s service manual for
informaon on how to perform an OBD II Drive Cycle for the vehicle under test.
After clearing, you should retrieve trouble codes once more or turn ignition on
and retrieve codes again. If there are still some trouble codes in the system,
please troubleshoot the code using a factory diagnosis guide, then clear the
code and recheck.
3. I/M Readiness
I/M refers to Inspection and Maintenance that is legislated by the Government
to meet federal clean-air standards. I/M Readiness indicates whether or not
the various emissions-related systems on the vehicle are operating properly
and are ready for Inspection and Maintenance testing.
The purpose of the I/M Readiness Monitor Status is to indicate which of the
vehicle’s Monitors have run and completed their diagnosis and testing, and
which ones have not yet run and completed testing and diagnosis of their
designated sections of the vehicle’s emissions system.
The I/M Readiness Monitor Status function also can be used (after repair of
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