With Manufacturer's Scan Tool
MONITOR ECM DATA BY USING HAND-HELD TESTERa. Connect the hand-held tester to the DLC3.
b. Monitor the ECM data by following the prompts on the tester screen.
HINT:
The hand-held tester has a "Snapshot" function which records the monitored data.
Please refer to the hand-held tester operator's manual for further details.