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CReader Series English User’s Manual
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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
emission-related fault.
Note: If DTCs were erased, Freeze Data may not be stored in vehicle memory depending
on vehicle.
6. O2 sensor test
The results of O2 sensor test are not live values but instead the results of the
ECU’s last O2 sensor test. For live O2 sensor readings, refer to any of the live
sensor screens such as Graph Screen.
Not all test values are applicable to all vehicles. Therefore, the list generated will
vary depending on vehicle. In addition, not all vehicles support the Oxygen
Sensors screen.
7. On-board monitor test
This function can be utilized to read the results of on-board diagnostic monitoring
tests for specific components/systems.
8. EVAP System Test
The EVAP test function lets you initiate a leak test for the vehicle’s EVAP system.
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