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 TOYOTA hand-held tester.
- TOYOTA hand-held tester only: When the diagnosis system is switched from the normal mode to the check mode, it erases all DTCs and freezed frame data recorded in the normal mode. So before switching modes, always check the DTCs and freezed frame data, and note them down.

1. Prepare the TOYOTA hand-held tester.




2. Connect the TOYOTA hand- held tester to DLC3.
3. Turn the ignition switch ON and push the TOYOTA hand-held tester switch ON.
4. Use the TOYOTA hand-held tester to check the DTCs and freezed frame data, 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 TOYOTA hand-held tester.
5. See Trouble Code Descriptions to confirm the details of the DTCs.

NOTE:
- When simulating symptoms with an OBD II scan tool (excluding TOYOTA hand-held tester) to check the DTCs, use the normal mode. For code on the DTC chart subject to "2 trip detection logic", perform the following either action.
- 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 theist trip DTC using Mode 7 (Continuous Test Results) for SAE J1979.