Using Hand-Held Tester

WARNING: This page is about a different car, the 2003 Lexus IS 300 and 2002 Lexus IS 300. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: DTCs are 4 digit numbers.

Prepare the hand-held tester and connect it to DLC3 located under the lower finish panel of the instrument panel. See Fig 1.
Turn the ignition switch ON and switch the hand-held tester main switch ON.
Use the hand-held tester to check the DTCs then write them down. For operating instructions, see the hand-held tester instruction book.
Confirm the details of the DTCs. See DIAGNOSTIC TROUBLE CODE INDEX .

Fig 1: Connecting Hand-Held Tester To DLC3