The need to perform this operation must be determined during the inspection of the technical condition of the cooling system (see «Cooling system - checking the technical condition»).
On non-air-conditioned vehicles, a two-speed electric fan is installed, which is controlled by two relays located in the relay box located in the engine compartment (see «Fuse and relay mounting blocks»). On vehicles with an air conditioning system before 2000, an additional two-speed fan is installed in front of the radiator in addition to the two-speed main fan. In this case, the control of both fans, as well as the air conditioning system, is carried out by a special electronic unit located on the left behind the front bumper (under the washer reservoir). The health of the block can be judged by the control dump (see «Controls and control devices»), The defective unit must be replaced (see «Electronic control unit for the cooling and air conditioning system - replacement»).
On cars with an air conditioning system after 2000, one three-speed fan is installed, which is controlled by relays installed in a separate block to the left of the battery.
To perform the work, you will need a multimeter, a wire with a cross section of about 2.5 mm2, 30 A fuse, soldering iron.
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