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2. Clear the DTC (See DTC CHECK/CLEAR ). HINT: Even if no DTCs are stored, perform the DTC clear operation to start alcohol concentration learning. 3. Start the engine. HINT: After clearing the DTCs, the engine may become difficult to start if the concentration of alcohol in the 4. Warm up the engine until the engine coolant temperature is 75°C (167°F) or more [A]. 5. Drive the vehicle at 32 km/h (20 mph) or more and maintain a constant speed for 2 minutes or more [B]. 6. After this driving make sure that the Data List "Alcohol Density Learning" is "Compl". 7. Drive the vehicle at between 60 and 120 km/h (40 and 75 mph) and maintain a constant speed for at least 10 minutes [C]. 8. Drive the vehicle 60 km/h (40 mph) or more and decelerate the vehicle for 5 seconds or more. Perform this 3 times [D]. 9. Turn the Techstream on. 10. Enter the following menus: Powertrain/Engine and ECT/Utility/All Readiness. 11. Enter the following DTCs: P2195, P2196, P2197 and P2198. 12. Check that the DTC monitor is NORMAL. If the DTC monitor is INCOMPLETE, perform the drive pattern increasing the vehicle speed and using the second gear to decelerate the vehicle [D]. INSPECTION PROCEDURE HINT: Although the DTC titles say oxygen sensor, these DTCs relate to the Air-Fuel Ratio (A/F) sensor. Sensor 1 refers to the sensor mounted in front of the Three-Way Catalytic Converter (TWC) and located DTC P2A00 may be set when the air-fuel ratio is stuck rich or lean. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when A low A/F sensor voltage could be caused by a rich air-fuel mixture. Check for conditions that would CAUTION: Perform this drive pattern on a level road as much as possible and strictly observe the posted speed limits and traffic laws while driving.
2009 Toyota Tundra 2009 ENGINE PERFORMANCE Engine Control System (3UR-FBE) - Tundra
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