Normal Mode

a. Check the MIL.
1. The MIL comes on when the ignition switch is turned ON and the engine is not running.

HINT: If the MIL does not light up, troubleshoot the combination meter

2. When the engine is started, the MIL should go off. If the lamp remains on, the diagnosis system has detected a malfunction or abnormality in the system.

b. Check the DTC.

NOTE: (LEXUS hand-held tester only) When the diagnostic system is switched from normal mode to check mode, it erases all DTCs and freeze frame data recorded in normal mode. So before switching modes, always check the DTCs and freeze frame data, and note them down.

1. Prepare an LEXUS hand-held tester.




2. Connect the LEXUS hand-held tester to DLC3 at the lower part of the instrument panel.
3. Turn the ignition switch ON and turn the LEXUS hand-held tester switch ON.
4. Use the LEXUS hand-held tester to check the DTCs and freeze frame data and note them down (For operating instructions, see the OBD II scan tool's instruction book).
5. See Diagnostic Trouble Code Descriptions to confirm the details of the DTCs.