With Manufacturer's Scan Tool

Check the DTC

USING TOYOTA HAND-HELD TESTER

a. Hook up the hand-held tester to the DLC3.
b. Monitor the ECU 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.