DTC Check / Clear

Fig 1: Identifying Terminal Arrangement Of Dlc3

CHECK DTC
1. DTCs which are stored in the ECM can be displayed with the intelligent tester.
  These scan tools can display pending DTCs and current DTCs. Some DTCs are not stored unless a malfunction is detected in consecutive driving cycles. When a malfunction is detected in only one driving cycle, it is stored as a pending DTC.
  1. Connect the intelligent tester to the 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. Confirm the details of the DTCs (see DIAGNOSTIC TROUBLE CODE CHART ).
    
    Fig 2: Connecting Intelligent Tester To DLC3
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  NOTE: When simulating a symptom with the scan tool to check for DTCs, use normal mode. For codes on the DIAGNOSTIC TROUBLE CODE CHART subject to "2 trip detection logic", perform the following actions.
  Turn the ignition switch OFF after the symptom is simulated once. Then repeat the simulation process again. When the symptom has been simulated twice, the MIL illuminates and the DTCs are recorded in the ECM.
CLEAR DTC
1. When using the intelligent tester:
  1. Connect the intelligent tester 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.
  HINT:
  
  When operating the intelligent tester to erase the codes, the DTCs and freeze frame data will be erased.
2. When not using the intelligent tester:
  1. Disconnect the battery terminal or remove the EFI and ETCS fuses from the engine room relay block for 60 seconds or more. However, if you disconnect the battery terminal, perform the "INITIALIZE" procedure (see INITIALIZATION ).
  Fig 3: Identifying ETCS Fuses
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002