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EVAP Drive Cycle 1

Fig 1: Drive Cycle Pattern 1
G00494834Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NOTE: A cold soak must be performed prior to conducting the drive pattern to complete the Internal Pressure Readiness Monitor.
  1. Cold Soak Preconditions  The monitor will not run unless:
    • MIL is OFF.
    • Fuel level is approximately 1/2 to 3/4 full.
    • Altitude is 8,000 feet (2,438 m) or less.
  2. Cold Soak Procedure  Let vehicle cold soak for 8 hours or until the difference between IAT and ECT leaches less than 7°C (13°F).
  3. Preconditions  The monitor will not run unless:
    • MIL is OFF.
    • Fuel level is approximately 1/2 to 3/4 full.
    • Altitude is 8,000 feet (2,438 m) or less.
    • Engine Coolant Temperature (ECT) is between 4.4°C and 35°C (40°F and 95°F).
    • Intake Air Temperature (IAT) is between 4.4°C and 35°C (40°F and 95°F).
    • The cold soak procedure has been completed.
    • Before starting the engine, the difference between ECT and IAT must be less than 7°C (13°F).

    HINT:

    • Example 1: ECT = 24°C (75°F), IAT = 16°C (60°F). Difference between ECT and IAT is 8°C (15°F). The monitor will not run because the difference between ECT and IAT is greater than 7°C (13°F).
    • Example 2: ECT = 21°C (70°F), IAT = 20°C (68°F). Difference between ECT and IAT is 1°C (2°F). The monitor will run because the difference between ECT and IAT is less than 7°C (13°F).
    NOTE: The readiness test can be completed in cold ambient conditions (less than 4.4°C / 40°F) and/or at high altitudes (more than 8,000 feet / 2,438 m). Finish the drive pattern, turn the ignition switch OFF and then ON again, and repeat the drive pattern a second time.
  4. Drive Pattern 
    1. Connect the hand held tester or OBD II scan tool to DLC3 to check monitor status and preconditions (refer to step "A").
    2. Release pressure in fuel tank by removing the fuel tank cap and then reinstalling it.
    3. Start the engine and allow it to idle until ECT reaches 75°C (167°F) or higher.
    4. Run the engine at 3,000 rpm for approximately 10 seconds.
    5. With the engine idling, turn the A/C ON to create a slight electrical load. Wait for 15 to 50 minutes.
NOTE: If the vehicle does not have A/C, put a slight electrical load on the engine by following the steps below:
  • Apply the parking brake securely.
  • Use wheel chocks to secure the tires.
  • Move the shift lever to the D position and allow the engine to idle for 15 to 50 minutes.

Check the readiness monitor status.

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