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5. Start the engine, and warm it up until the ECT reaches 75°C (167°F) or higher. 6. Drive the vehicle at between 38 mph (60 km/h) and 75 mph (120 km/h) for at least 10 minutes. 7. Change the transmission to 2nd gear. 8. Accelerate the vehicle to 40 mph (64 km/h) or more by depressing the accelerator pedal for at least 10 seconds. 9. Soon after performing step (8) above, release the accelerator pedal for at least 4 seconds without depressing the brake pedal, in order to execute fuel-cut control. 10. Allow the vehicle to decelerate until the vehicle speed declines to less than 6 mph (10 km/h). 11. Repeat steps from (8) through (10) above at least 3 times in one driving cycle. c. Monitor Status 1. Check the Readiness Monitor status displayed on the Techstream. 2. If the status does not switch to Complete, make sure that the preconditions have been met, and then perform steps from (5) through (11) in Drive Pattern above. 5. AIR-FUEL RATIO (A/F) AND HEATED OXYGEN (HO2) SENSOR HEATER MONITORS (FRONT A/F AND REAR HO2 SENSOR TYPE) Fig. 15: Readiness Monitor Drive Pattern - Air-Fuel Ratio & Heated Oxygen (HO2) Sensor Heater a. Preconditions The monitor will not run unless: The MIL is OFF. b. Drive Pattern 1. Connect the Techstream to the DLC3. 2. Turn the ignition switch ON. 3. Turn the Techstream ON.
2008 Toyota Tundra 2008 ENGINE PERFORMANCE Engine Control System (1GR-FE) - Tundra
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