DTC Check / Clear

DTC CHECK / CLEAR

NOTE:
- If no DTC appears in normal mode:
On the OBD II or intelligent tester, check the pending fault code using the Continuous Test Results function (Mode 7 for SAE J1979).

- When the diagnosis system is changed from normal mode to check mode or vice versa, all DTCs and freeze frame data recorded in normal mode are erased. Before changing modes, always check and make a note of DTCs and freeze frame data.

HINT:
- DTCs which are stored in the ECM can be displayed on the intelligent tester. The intelligent tester can display current and pending DTCs.
- Some DTCs are not set if the ECM does not detect the same malfunction again during a second consecutive driving cycle. However, malfunctions detected on only 1 occasion are stored as pending DTCs.

1. CHECK DTC (Using Intelligent Tester)




a. Connect the intelligent tester to the DLC3.
b. Turn the power switch ON (IG) and turn the tester ON.
c. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES.
d. Check for DTCs and freeze frame data, and then write them down.
e. Check the details of the DTC(s).

NOTE: Turn the HV main system OFF (IG OFF) after the symptom is duplicated once. Then repeat the simulation process again. When the problem has been duplicated again, the MIL illuminates and the DTCs are recorded in the ECM.

2. CLEAR DTC (Using Intelligent Tester)
a. Connect the intelligent tester to the DLC3.
b. Turn the power switch ON (IG) and turn the tester ON.
c. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CLEAR CODES.
d. Press the YES button.

NOTE: Clearing the DTCs will also clear the freeze frame data, detailed information and operation history data.

3. CLEAR DTC (Without Using Intelligent Tester)




a. Remove the EFI and ETCS fuses from the engine room relay block for more than 60 seconds, or disconnect the battery cable for more than 60 seconds.

NOTE: After reconnecting the battery cable, perform the "INITIALIZE" procedure.