When the ignition switch is turned off and the engine temperature is high, the cooling fans may operate for approximately 3 minutes.
After turning the ignition switch off, keep hands and objects away from the fans when they are operating.
HINT: If all of the following are met for a certain period of time during a few minute period immediately before the engine is stopped, the electric fans will continue to operate for 3 minutes after the engine is stopped. This is performed to ensure restartability and stabilize idle speed.
– The intelligent tester indicates a very high coolant temperature.
– The intelligent tester indicates a high outside air temperature.
– The vehicle has been driven under high load (driving on an uphill or equivalent).
The following sensors are used for this control:
– Coolant temperature sensor
– Outside air temperature sensor
– MAF sensor
– Vehicle speed sensors
PARTS LOCATION
SYSTEM DIAGRAM
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A quick Toyota Sienna quiz: every answer comes with an explanation and a link to the manual page.