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:Β
Performing this confirmation driving pattern will activate the catalyst efficiency monitor. This is very useful for verifying the completion of a repair.
- Connect the Techstream to the DLC3.
- Turn the power switch on (IG).
- Turn the Techstream on.
- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
- Turn the power switch off and wait for at least 30 seconds.
- Turn the power switch on (IG) and turn the Techstream on.
- Enter the following menus: Powertrain / Engine and ECT / Monitor / Current Monitor.
- Check that Catalyst Efficiency / Current is Incomplete.
- Put the engine in inspection mode (maintenance mode). Refer to INSPECTION MODE PROCEDURE .
- Start the engine and warm it up until the engine coolant temperature is 75Β°C (167Β°F) or higher [A].
- Drive the vehicle at approximately 60 to 100 km/h (37 to 62 mph) for 10 minutes or more [B].WARNING:
When performing the confirmation driving pattern, obey all speed limits and traffic laws.
HINT:Β
- Drive the vehicle while keeping the engine load as constant as possible.
- The monitor item will change to Complete as the Catalyst Efficiency monitor operates [C].
- Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
- Check if any DTCs (pending DTCs) are stored.
HINT:Β
If the monitor item does not change to Complete, and no pending DTCs are stored, perform the following procedure.
- Drive the vehicle at a speed between 75 and 100 km/h (47 and 62 mph) for 10 minutes or more [D].WARNING:
When performing the confirmation driving pattern, obey all speed limits and traffic laws.
HINT:Β
- Drive the vehicle while keeping the engine load as constant as possible.
- The monitor item will change to Complete as the Catalyst Efficiency monitor operates [E].
- Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
- Check if any DTCs (pending DTCs) are stored.
HINT:Β
If the monitor item does not change to Complete, and no pending DTCs are stored, drive the vehicle again under an increased load.
- If no pending DTC is output, perform a universal trip and check for permanent DTCs. Refer to DTC CHECK / CLEAR
.
HINT:Β
- If a permanent DTC is output, the system is malfunctioning.
- If no permanent DTC is output, the system is normal.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.
