Monitors, Trips, Drive Cycles and Readiness Codes

OBD-II DRIVE CYCLE
All kinds of diagnostic trouble codes can be monitored by carrying out a short drive in accordance with the following drive cycle pattern.
In other words, doing such a drive allows to regenerate any kind of trouble which involves illuminating the check engine/malfunction indicator lamp and to check if the repair procedure has eliminated the trouble (the check engine malfunction indicator lamp is no more illuminated).

NOTE:
1. For checking the following three systems for illumination of the check engine/malfunction indicator lamp, perform the driving up to the point B twice successively. Before beginning with the first driving, turn off the ignition switch for more than 10 seconds.
- EGR system, Fuel trim, Evaporative emission control system.
2. In case of the systems other than those three mentioned above, performing a drive up to the point B twice successively will suffice for determing if the check engine/malfunction indicator lamp illuminates or not.
Before beginning with the first driving, turn off the ignition switch more than 10 seconds.
3. Perform test drives under the following conditions.
- On vehicles with automatic transmission, set selector lever in D range, overdrive switch ON, Power/Economy change over switch in P range.
- Acceleration: Keep the throttle in 1/4 to 3/4 opened conditions.
- Deceleration: Lower the vehicle speed below 15 mph or the engine speed below 1,000 rpm/min. (without operating brake and clutch).
- During cruising: Keep the throttle opening constant.
- During stopping: Keep the throttle fully closed, NO OFF and transmission in neutral.
- Coolant temperature at starting: 10°C (50°F) or higher
- Intake air temperature at starting: 40°C (104°F) or lower
- Intake air temperature during driving: 50°C (122°F) or lower