With Manufacturer's Scan Tool

In case of using the LEXUS hand held tester:

Check the DTC
1. Hook up the LEXUS hand-held tester to DLC3.
2. Turn the ignition switch ON.
3. Read the DTC by following the prompts on the tester screen.

HINT: Refer to the LEXUS hand-held tester operator's manual for further details.

4. Remove the LEXUS hand-held tester from the terminals of DLC3.