DTC Check (Normal Mode)

INSPECT DIAGNOSIS (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 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:
- If there is no DTC in the normal mode, check the 1st trip DTC using Continuous Test Results function (Mode 7 for SAE J1979) on the OBD II scan tool or LEXUS hand-held tester.
- LEXUS 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.

1. Prepare the LEXUS hand-held tester.
2. Connect the LEXUS hand-held tester to the DLC3 at the lower left of the instrument panel.
3. Turn the ignition switch ON and push 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.)
If there is no DTC in the normal mode, check the 1st trip DTC using Continuous Test Results function (Mode 7 for SAE J1979) on the OBD II scan tool or LEXUS hand-held tester.
5. See Trouble Code Descriptions to confirm the details of the DTCs.