P0121

Wiring Diagram:

Detecting Condition/Trouble Area:

DTC CONFIRMATION PROCEDURE

WARNING:
- When performing a road test, select a place where there is no traffic or possibility of a traffic accident and be very careful during testing to avoid occurrence of an accident.
- Road test should be carried out with 2 persons, a driver and a tester, on a level road.

NOTE:
Check to make sure that the following conditions are satisfied when using this DTC CONFIRMATION PROCEDURE.
- Intake air temp.: -8 °C, 18 °F or higher
- Engine coolant temp.: -8 - 110 °C (18 - 230 °F)
- Altitude barometric pressure: 2400 m, 8000 ft or less (560 mm Hg, 75 kPa or more)

1. Connect scan tool to DLC with ignition switch OFF.
2. Turn ON ignition switch and clear DTC, pending DTC and freeze frame data by using scan tool and start engine.
3. Increase vehicle speed to 60 kph (40 mph).
4. Keep driving above vehicle speed for 5 min. (Change of vehicle speed is permitted in this step).
5. Stop vehicle and run engine at idle speed for 1 min.
6. Increase vehicle speed till engine speed is reached 2,000 - 3,000 r/min in proper gear.
7. Keep driving at that engine speed for 30 sec. or more (Engine speed is kept constant in this step).
8. Stop vehicle.
9. Repeat step 6 to 8.
10. Check DTC and pending DTC by using scan tool.

Troubleshooting ( Steps 1 - 4 ):