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DTC Check/Clear

NOTE:
  • If no DTC appears in normal mode:
    1. On the hand-held 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 will be erased. Before changing modes, always check and make a note of DTCs and freeze frame data.
  1. CHECK DTC 

    DTCs which are stored in the ECM can be displayed with the hand-held tester.

    These scan tools can display pending DTCs and current DTCs. Some DTCs are not stored if the ECM does not detect a malfunction during consecutive driving. However, the detected malfunction during once driving is stored as pending DTC.

    1. Connect the hand-held tester to the CAN VIM. Then connect the CAN VIM to the Data Link Connector 3 (DLC3).
    2. Turn the ignition switch ON.
    3. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES (or PENDING CODE).
    4. Confirm the DTCs and freeze frame data and then write them down.
    5. See DIAGNOSTIC TROUBLE CODE CHART  to confirm the details of the DTCs.
    Fig 1: Connecting Hand-Held Tester To DLC3
    G03003902Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. CHECK PENDING DTC 
    NOTE: When simulating a symptom with the hand-held tester to check for DTCs, use the normal mode. For DTCs subject to "2 trip 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 illuminates and the DTCs are recorded in the ECM.
    1. Connect the hand-held tester to the CAN VIM. Then connect the CAN VIM to the DLC3.
    2. Turn the ignition switch ON.
    3. Enter the following menus: DIAGNOSIS / ENHANCED OBDII / DTC INFO / PENDING CODES.
    4. See DIAGNOSTIC TROUBLE CODE CHART  to confirm the details of the DTCs.
  3. CLEAR DTC 
    1. Connect the hand-held tester to the CAN VIM. Then connect the CAN VIM to the DLC3.
    2. Turn the ignition switch ON.
    3. Enter the following menus: DIAGNOSIS/ENHANCED OBD II/DTC INFO/CLEAR CODES and press YES.
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