Humidity is the concentration of water vapour present in the air. Water vapor, the gaseous state of water, is generally invisible to the human eye. Humidity indicates the likelihood for precipitation, dew, or fog to be present.. Humidity depends on the temperature and pressure of the system of interest.
FIELD: engines. SUBSTANCE: invention relates to methods and systems for diagnostics of an engine cooling system. Method of diagnostics of a vehicle cooling system involves adjusting the state of one or more valves of the cooling system to keep the first amount of the coolant in the first loop with circulation of the second amount of the coolant in a thermostat in the second loop.