LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2002 >> SC 430 >> Repair and Diagnosis >> External Pages >> Different car >> Section 79 (Multiplex Communication System) >> Self-Diagnostic System >> Retrieving Diagnostic Trouble Codes >> Using Hand-Held Tester
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Using Hand-Held Tester

WARNING: This page is about a different car, the 2003 Lexus RX 300 and 2002 Lexus RX 300. However, it is still accessible from the selected car via links, so may be relevant.
  1. Prepare the hand-held tester.
  2. Connect the hand-held tester to DLC3. See Fig 1.
  3. Turn the ignition switch ON and switch the hand-held tester main switch ON.
  4. Use the hand-held tester to check the DTCs, note them down. For the opening instructions, see the hand-held tester's instruction book.
  5. See DIAGNOSTIC TROUBLE CODE INDEX  table to confirm the details of the DTCs.
Fig 1: Connecting Scan Tool To DLC3
G99B52879Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002