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

1. NOTICE ABOUT VEHICLE CONDITION WHEN JACKING UP VEHICLE (a) The vehicle must be unloaded before jacking up/ lifting up the vehicle. Never jack up/lift up a heavily loaded vehicle. (b) When re ...

Other materials:

Removal
1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINALV Caution: wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner activation. 2. Remove air fuel ratio sensor (for bank 2 sensor 1) (a) ...

Reassembly
1. INSTALL REAR DRIVE SHAFT OUTBOARD JOINT BOOT HINT: Before install the boot, wrap the spline of the outboard joint shaft with vinyl tape to prevent the boot from bearing damaged. (a) Install new outboard joint boot, 2 outboard joint boot clamps, 2 inboard joint boot clamps and inboard j ...

Front stabilizer bar (for 4wd)
COMPONENTS ...