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OBD-II/EOBD
OBD Diagnose
($03) Display Trouble Codes
This is used to display any stored emission related DTCs reported by the ECM. The display is
similar to a Scanner code display, but does not include any enhanced DTCs.
($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. Selecting opens a confirmation message
(
).
Figure 6-7
Sample clear codes confirmation
Continue from the confirmation message and the screen updates several times as ECM memory
is erased, then a “data has been cleared” message displays. Select
Continue
to return to the
Select Service menu.
($05, 06, 07) Display Test param./Results
This selection opens a submenu of test parameters and test results form various sensors, monitor
test results, and a record of DTCs detected during the last drive cycle. The menu includes:
•
($05) Oxygen Sensor Monitoring
•
($06) Specific Monitored Systems
•
($07) DTCs Detected During Last Drive
($05) Oxygen Sensor Monitoring
This selection opens a menu of tests available for checking the integrity of the oxygen sensors.
Making a selection displays all of the pertinent O2S parameters for the specific test. The test
identification (ID) displays at the top of the data list.
