DTC Check / Clear [10/2017 - 12/2021]

NOTE:

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 cleared. 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 Techstream. The Techstream can display the 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, such malfunctions, detected on only one occasion, are stored as pending DTCs.

CHECK DTC

Connect the Techstream to the DLC3.
Turn the ignition switch to ON.
Turn the Techstream on.
Enter the following menus: Powertrain / Engine / Trouble Codes.
Powertrain > Engine and ECT > Trouble Codes

Check the DTC(s) and freeze frame data, and then write them down.

HINT:

Techstream Display	Description
Test Failed	Shows the malfunction judgment results during the current trip.
Pending	Shows the malfunction judgment results up to now. (Indicates the possibility of a malfunction when no DTC is confirmed.)
Confirmed	Shows the DTCs confirmed up to now. (The number of current trips differs for each DTC.)

Check the details of the DTC(s).
Refer to DIAGNOSTIC TROUBLE CODE CHART [10/2017 - 09/2019] , or refer to DIAGNOSTIC TROUBLE CODE CHART [09/2019 - 12/2021]

CLEAR DTC (Using the Techstream)
1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
  Powertrain > Engine and ECT > Clear DTCs
5. Clear the DTCs.
CLEAR DTC (Without using the Techstream)
1. Perform either one of the following operations:
  NOTE:
  After turning the ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.
  
  Refer to PRECAUTION [02/2017 - 05/2018] , or refer to PRECAUTION [05/2018 - ]
  1. Disconnect the cable from the negative (-) battery terminal for more than 1 minute.
  2. Remove the ECU-B NO. 3 and ETCS fuses from the No. 1 engine room relay block located inside the engine compartment for more than 1 minute.