When the engine is hot, the cooling fan may activate at any time - exercise extreme caution!
Examination
The electric fan is powered by the battery. The electric circuit of the fan includes a protective fuse, ignition switch and relay (see Chapter On-board electrical equipment). The operation of the fan is controlled by an electronic control unit based on data received from the coolant temperature sensor.
To check the proper functioning of the fan, start the engine and warm it up at idle speed to normal operating temperature. The fan should operate before the needle of the engine temperature gauge on the vehicle instrument panel approaches the overheating sector on the dial. If the fan does not operate, check the proper functioning of the power supply voltage on the corresponding fan wire and relay (see Chapter On-board electrical equipment). Power failure may occur as a result of a blown fuse, a faulty ignition switch, a faulty relay, or damaged wiring. It is also possible that the fan drive motor is faulty.
Removal
1. Disconnect the negative cable from the battery.
2. On naturally aspirated diesel engine remove the air intake sleeve.
3. On turbodiesel remove the oil dipstick guide tube from the cylinder head.
4. If equipped, remove the power steering fluid reservoir and move it to the side along with the hoses.
5. Disconnect the multi-pin connector of the fan motor.
6. Unscrew the bolts securing the fan cover with the electric motor, pull it out of the left bracket and remove it together with the electric motor upwards.
Fan cover mounting bolts
On a diesel engine, the brackets are located on the left and right.
7. Use a screwdriver to remove the clamp from the electric motor shaft and remove the impeller.
Removal the clamp
8. Unscrew the mounting bolts and remove the electric motor from the fan housing.
Fan motor mounting bolts
Installation
1. Installation is performed in the reverse order of dismantling the components. Tighten the fasteners with the required force. When installing the impeller, make sure that the pin on the electric motor shaft enters the groove of the impeller.
Installing the impeller
2. Start the engine and let it warm up until the fan motor comes on.
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