Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
DTC Check/Clear
- CHECK DTC
- DTCs which are stored in the ECM can be displayed with Techstream or a generic OBD II scan tool. These scan tools can display pending DTCs and current DTCs. Some DTCs aren't stored if the ECM doesn't detect a malfunction during consecutive driving. However, malfunctions detected once during driving are stored as pending DTCs.
- Connect Techstream to the DLC3
- Turn the ignition switch ON, and turn the tester main switch ON
- Enter the following menus: Powertrain/Engine and ECT/Trouble Codes.
- Confirm the DTCs and freeze frame data and then write them down.
- Confirm the details of the DTCs (see DIAGNOSTIC TROUBLE CODE CHART
).NOTE: When simulating a symptom with the scan tool to check the DTCs, use normal mode. For codes in DIAGNOSTIC TROUBLE CODE CHART which are 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 problem has been simulated twice, the MIL illuminates and the DTCs are recorded in the ECM.
- DTCs which are stored in the ECM can be displayed with Techstream or a generic OBD II scan tool. These scan tools can display pending DTCs and current DTCs. Some DTCs aren't stored if the ECM doesn't detect a malfunction during consecutive driving. However, malfunctions detected once during driving are stored as pending DTCs.
- CLEAR DTC
- Connect Techstream to the DLC3.
- Turn the ignition switch ON, and turn the tester main switch ON.
- Enter the following menus: Powertrain/Engine and ECT/DTC/Clear.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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