Diagnosis (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 the Continuous Test Results function (Mode 7 for SAE J1979) on the hand-held tester or OBD II scan tool.
- Hand-held tester only:
When the diagnosis system is switched from the normal mode to the check mode all the DTCs and freeze frame data recorded in normal mode will be erased. So before switching modes, always check the DTCs and freeze frame data, and note them down.

1. Prepare the hand-held tester or OBD II scan tool (complying with SAE J1978).
2. Connect the hand-held tester or OBD II scan tool to the DLC3 at the lower left of the instrument panel.
3. Turn the ignition switch ON and push the hand-held tester or OBD II scan tool main switch ON.
4. Use the hand-held tester or OBD II scan tool 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 normal mode, check the 1st trip DTC using Continuous Test Results function (Mode 7 for SAE J1979) on the hand-held tester or OBD II scan tool.

5. See Trouble Code Descriptions to confirm the details of the DTCs.

NOTE:
- When simulating a symptom with the OBD II scan tool (excluding hand-held tester) to check the DTCs1 use the normal mode. For code on the DTC chart subject to "2trip detection logic", perform either of the following actions.
- Turn the ignition switch OFF after the symptom is simulated once. 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.

c. Clear the DTC.
The DTCs and freeze frame data will be erased by either action.
- Operating the hand-held tester or OBD II scan tool (complying with SAE J1978) to erase the codes (See the OBD II scan tool's instruction book for operating instructions.).
- Disconnecting the battery terminals or remove the EFI fuse more than 60 seconds.






NOTE: If the hand-held tester switches the ECM from the normal mode to the check mode or vice-versa, or if the ignition switch is turned from ON to ACC or OFF during check mode, the DTCs and freeze frame data will be erased.