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CRP 429HD User's Manual
*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
The EVAP test function lets you initiate a leak test for the vehicle’s EVAP system.
CRP 429HD does not perform the leak test, but signals to vehicle’s on-board
computer to initiate the test. Before using the system test function, refer to the
vehicle’s service repair manual to determine the procedures necessary to stop
the test.
9. Vehicle Infomation
This option allows you to retrieve a list of information (provided by the vehicle
manufacturer), unique to the vehicle under test, from the vehicle’s on-board
computer. This information may include:
• VIN (Vehicle Identification Number)
• CIDs (Calibration ID) -- These CIDs uniquely identify the software version for
the vehicle’s control module.
• CVNs (Calibration Verification Number) -- CVNs are used to determine if
emission-related calibrations for the vehicle under test have been changed.
One or more CVNs may be returned by the vehicle’s on-board computer.
