Operation CHARM: Car repair manuals for everyone.

Monitors, Trips, Drive Cycles and Readiness Codes

OBD II Drive Cycle


Note: Only perform this procedure when instructed to do so.

1. Start and warm the engine until the engine coolant temperature is over 82°C (180°F).
2. Drive the vehicle or let it idle for four minutes.
3. Stop the vehicle and let it idle for 40 seconds.
- D range.
4. Open the throttle 1/4-1/2 and increase the speed to 40km/h (25 mph) for 10 seconds.
5. Fix the throttle opening and drive the vehicle at 40 km/h (25 mph) for 30 seconds.
6. Stop the vehicle and let it idle for 40 seconds.
- D range
7. Drive the vehicle at 35 km/h (22 mph) for four minutes.
8. Stop the vehicle and let it idle for 30 seconds.
9. Drive the vehicle at 30 km/h (19 mph) for six minutes.
10. Stop the vehicle and let it idle for 30 seconds.
11. Drive the vehicle at 25-40 km/h (16-25 mph) for three minutes while observing the following condition.
a. Stop and idle for 10 seconds at least five times.
b. The throttle opening is 1/4 - 1/2 when accelerating from idle.
c. Shift between three different speeds while driving at 25-40 km (16-25 mph).
12. Drive the vehicle at a constant speed between 25-40 km/h (16-25 mph) for one minute.
13. Within eight seconds, accelerate to 55-60 km/h (35-37 mph).
14. Drive the vehicle at a constant speed between 55-60 km/h (35-37 mph) for two minutes.