Toyota Sienna Service Manual: Evap monitor (key-off type)

(a) Preconditions

The monitor will not run unless:

• The fuel tank is less than 90% full.
• The altitude is less than 8000 ft (2450 m).
• The vehicle is stationary.
• The engine coolant temperature is between 4.4°C and 35°C (40°F and 95°F).
• The intake air temperature is between 4.4°C and 35°C (40°F and 95°F).
• Vehicle was driven in the city area (or on freeway) for 10 minutes or more.

(b) Monitor Conditions

(1) Turn the ignition switch off and wait for 6 hours.

HINT:

Do not start the engine until checking Readiness Monitor status. If the engine is started, the step described above must be repeated.

(c) Monitor Status

(1) Connect an intelligent tester to the DLC3.

(2) Turn the ignition switch to the ON position.

(3) Turn the tester or scan tool ON.

(4) Check the Readiness Monitor status displayed on the tester or scan tool.

If the status does not switch to COMPL (complete), restart the engine, make sure that the preconditions have been met, and then perform the Monitor Conditions again.