5.3.5. Check of serviceability of functioning of the sensor of temperature of cooling liquid (ECT)
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The thermoswitch turns on the fan at a certain temperature of OZh. The switch should be checked if at a hot radiator the fan does not turn on. Before check of a thermoswitch be convinced of serviceability of its electrical wiring (see the Head Onboard electric equipment), and also the thermostat and the safety valve in a radiator cover. At any damage of the specified parts, the thermoswitch cannot work since at the same time it does not heat up cooling liquid. |
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The fan of a radiator can independently turn on at the switched-off engine and the included ignition (position "II" of the ignition key). Owing to the processes of the heat sink taking place in a motive compartment, it can repeatedly occur. Therefore, whenever possible, during the work in a motive compartment it is necessary to switch off ignition. |