Using Hand-Held Tester
WARNING: This page is about a different car, the 2003 Lexus GS 430, 2003 Lexus GS 300, 2002 Lexus GS 430, and 2002 Lexus GS 300. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Always record DTCs during retrieval.
NOTE:
An OBD II scan tool complying with SAE J1978 can be used if Lexus hand-held tester is not available.
Prepare the hand-held tester. Connect the hand-held tester to DLC3. 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, note them down. For operating instructions, see the hand-held tester instruction manual.