NORMAL Mode Code Retrieval
NOTE:
- If there is no DTC in the normal mode, check the 1st trip DTC using continuous test result function (mode 7 for SAE J1979) or the hand-held tester or OBD II scan tool.
- Hand-Held Tester Only
When the diagnosis system is switched from normal mode to check mode, it erases all DTCs and freeze frame data recorded in normal mode. So before switching modes, always check the DTCs and freeze frame data, and note them down.
- Prepare and connect the hand-held tester or OBD II scan tool (complying with SAE J1978) to the DLC3 under the instrument panel lower pad. See Figure. Turn the ignition switch ON and hand-held tester or OBD II scan tool switch ON. If the hand-held tester or OBD II scan tool does not display UNABLE TO CONNECT TO VEHICLE, go to next step. If hand-held tester or OBD II scan tool displays UNABLE TO CONNECT TO VEHICLE, check the DLC3. See DATA LINK CONNECTOR NO. 3 INSPECTION under SCAN TOOL PROBLEMS.
- Use the hand-held tester or OBD II scan tool to check the DTCs and freeze frame data and note them down. For more information on freeze frame data, see FREEZE FRAME DATA . For operating instructions, see the OBD II scan tool's instruction book.
- Confirm details of DTC. See DIAGNOSTIC TROUBLE CODE DEFINITIONS . If driveability problem exists and no DTCs are present, go to TROUBLE SHOOTING - NO CODES
article for diagnosis by symptom.NOTE:
- When simulating symptoms with an OBD II scan tool (excluding hand-held tester) to check the DTCs, use normal mode. For code on the DTC chart subject to 2 trip detection logic (for information on two-trip detection logic codes, see TWO-TRIP DETECTION LOGIC ), perform either of the following actions:
- Turn the ignition switch OFF after the symptom is simulated the 1st time. 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.
- When simulating symptoms with an OBD II scan tool (excluding hand-held tester) to check the DTCs, use normal mode. For code on the DTC chart subject to 2 trip detection logic (for information on two-trip detection logic codes, see TWO-TRIP DETECTION LOGIC ), perform either of the following actions:
- After repairs for DTC have been completed, DTC must be cleared from ECM. See NORMAL MODE CODE CLEARING under CLEARING DIAGNOSTIC TROUBLE CODES. Road test vehicle to ensure all symptoms and/or complaints have been repaired.