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OBD-II/EOBD
OBD-II/EOBD Menu
($01) Display Current Data
Use this test to display the serial data transmitted by the selected vehicle electronic control
module (ECM). The main body of the screen has two columns; the left-hand column is a
description of the parameter and the right-hand column is the parameter value or state. Viewing
options and operations are the same as the Scanner function, see
more information.
Figure 4-6 Current data display
($02) Display Freeze Frame Data
Freeze frame data provides a “snapshot” of critical parameter values at the time a DTC set.
This item is used to display freeze fame data for any stored emission related diagnostic trouble
codes (DTCs). In most cases the stored frame is the last DTC that occurred. Certain DTCs, those
that have a greater impact on vehicle emissions, have a higher priority. In these cases, the highest
priority DTC is the one for which the freeze frame records are retained.
($03) Display Trouble Codes
This is used to display any stored emission related DTCs reported by the ECM. The display is
similar to the Scanner function code display (see
‚ on page 27 for details). The list
does not include enhanced DTCs in this mode.
($04) Clear Emissions Related Data
This item is used to clear all emission related diagnostic data, such as DTCs, freeze frame data,
and test results, from the memory of the selected ECM.
