LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2003 >> LS 430 >> Repair and Diagnosis >> External Pages >> Different car >> Section 115 (Engine Control System Self Diagnostics - 4-Cylinder) >> Self-Diagnostic System >> Retrieving Diagnostic Trouble Codes >> NORMAL Mode Code Retrieval
April 5, 2026: LEMON Manuals is launched! Read the announcement.

NORMAL Mode Code Retrieval

WARNING: This page is about a different car, the 2003 Toyota Camry Solara. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: If there is no DTC in the normal mode, check the 1st trip DTC using the Continuous Test Results function (Mode 7 for SAE J1979) on the OBD II scan tool or the hand-held tester.

Hand-Held Tester Only -  When the diagnosis system is switched from the normal mode to the check mode, it erases all DTCs and freeze frame data recorded in the normal mode. So before switching modes, always check the DTCs and freeze frame data and note them down.

OBD II Scan Tool Only -  When simulating a symptom with the OBD II scan tool (excluding hand-held tester) to check the DTCs, use the normal mode. For code on the DTC chart subject to 2 trip detection logic, perform either of the following two actions:

  • Turn the ignition switch OFF after the symptom is simulated the 1st time. Then repeat the simulation process again. When the problem has been simulated twice, the MIL lights up and the DTCs are recorded in the ECM.
  • Check the 1st trip DTC using Mode 7 (Continuous Test Results) for SAE J1979.

  1. Prepare the hand-held tester or the OBD II scan tool complying with SAE J1978.
  2. Connect the hand-held tester or OBD II scan tool to DLC3 under the instrument panel lower pad. See Figure.
  3. Turn ignition ON with engine off and push the hand-held tester or OBD II scan tool main switch ON.
  4. Use the hand-held tester or the OBD II scan tool to check for DTCs and freeze frame data and note them down (for operating instructions, see the OBD II scan tool's instruction book). For more information on freeze frame data, see FREEZE FRAME DATA . If driveability problem exists and no DTCs are present, go to TROUBLE SHOOTING - NO CODES article for diagnosis by symptom.
  5. Confirm details of the DTC. See DIAGNOSTIC TROUBLE CODE DEFINITIONS .
  6. After repairs have been completed, clear DTCs from ECM. See CLEARING DIAGNOSTIC TROUBLE CODES . Road test vehicle to ensure all symptoms and/or complaints have been repaired.
scientia non olet · About LEMON Manuals