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This option is used to identify which section of the emission control system has
malfunctioned.
2. Erase Codes
After reading the retrieved codes from the vehicle and certain repairs have been
carried out, you can use this function to erase the codes from the vehicle. Before
performing this function, please be sure the vehicle's ignition key is in the ON
position with the engine off.
Notes:
Before performing this function, make sure to retrieve and record the trouble codes.
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 (as
described in Chapter 2.5), and which ones have not yet run and completed testing
and diagnosis of their designated sections of the vehicle's emissions system.
I/M Readiness Monitor Status function also can be used (after repair of a fault has
been performed) to confirm that the repair has been performed correctly, and/or to
check for Monitor Run Status.
4. Data Stream
This option retrieves and displays live data and parameters from the vehicle's
ECU.
5. View Freeze Frame
When an emission-related fault occurs, certain vehicle conditions are recorded by
the on-board computer. This information is referred to as freeze frame data.
Freeze Data is a snapshot of the operating conditions at the time of an
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