Normal Mode

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.

Check the DTC

NOTE:
- If there is no DTC in normal mode, check the 1st trip DTC using. Continuous Test Results function on the TOYOTA hand-held tester.
- TOYOTA hand-held tester only: When the diagnosis 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 the TOYOTA hand-held tester.
2. Connect the TOYOTA hand-held tester to DLC3 under the instrument panel lower pad.
3. Turn the ignition switch ON and turn the TOYOTA hand-held tester switch ON.
4. Use the TOYOTA hand-held tester to check the DTCs and freeze frame data note them down.
5. See Trouble Code Descriptions to confirm the details of the DTCs.
Diagnostic Trouble Code Descriptions


* 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.