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.
Confirmation Driving Pattern
HINT:
Performing this confirmation pattern will activate the catalyst monitor. This is very useful for verifying the completion of a repair.
HINT:
- Connect the Techstream to the DLC3.
- Turn the ignition switch to ON.
- Turn the Techstream on.
- Clear DTCs (if set) (See DTC CHECK / CLEAR ).
- Enter the following menus: Powertrain / Engine and ECT / Monitor.
- Check that Catalyst / Status 2 is Incomplete.
- Start the engine and warm it up.
- Drive the vehicle at between 40 mph and 70 mph (64 km/h and 113 km/h) for at least 10 minutes.
- Those items will change to Complete as Catalyst monitor operates.
- Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
- Check if any DTCs (any pending DTCs) are set.
HINT:
If Catalyst does not change to Complete, and any pending DTCs fail to set, extend the driving time.
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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.