Toyota Sienna Service Manual: Precaution for cooling fan system

Toyota Sienna Service Manual / Introduction / Repair instruction / Precaution / Precaution for cooling fan system

NOTICE: • 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

For vehicles equipped with catalytic converter

CAUTION: If a large amount of unburned gasoline or gasoline vapors flow into the converter, it may cause overheating and create a fire hazard. To prevent this, observe the following precautio ...

Vehicle lift and support locations

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Other materials:

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ON-VEHICLE INSPECTION 1. INSPECT AIR INLET CONTROL SERVO MOTOR (a) Remove the air inlet control servo motor. (b) Connect the positive (+) lead from the battery to terminal 5 and negative (-) lead to terminal 1, then check that the lever turns to "RECIRCULATION" side smoothly. ...

Short to B+ in Side Squib LH Circuit
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Unlocking and locking the doors from the outside
Entry function (vehicles with a smart key system) Carry the electronic key to enable this function. Grip the driver’s door handle to unlock the door. Grip the passenger’s door handle to unlock all the doors.* Make sure to touch the sensor on the back of the handle. The doors ...