Intake air thermal management device for an internal combustion engine provided with a turbocharger, said device comprising: - a first heat exchanger comprising a heat transfer fluid inlet and a heat transfer fluid outlet and positioned in the air intake circuit between the compressor and the engine, - a second heat exchanger positioned on the main exhaust line of the engine and collecting the heat energy from the exhaust gases, transferring said energy to a heat transfer fluid circulating in a heating loop from a heat transfer fluid outlet and a heat transfer fluid inlet, the heat transfer fluid inlet of the first heat exchanger being connected to the heat transfer fluid outlet of the second heat exchanger and the heat transfer fluid outlet of the first heat exchanger being connected directly or indirectly to the heat transfer fluid inlet of the second heat exchanger, so as to form the heating loop, the first heat exchanger being also connected to: - a cooling loop connecting the heat transfer fluid outlet of the first heat exchanger to the heat transfer fluid inlet of a low temperature radiator and connecting the heat transfer fluid outlet of said low temperature radiator to the heat transfer fluid inlet of the first heat exchanger, - a bypass loop connecting the heat transfer fluid inlet and the heat transfer fluid outlet of said first heat exchanger, characterized in that: - a control valve is positioned at one junction common to the heating, cooling and bypass loops so as to control the circulation of heat transfer fluid in selectively each of said heating, cooling and or bypass loops, - a heat transfer fluid circulation pump is positioned between the first heat exchanger and a junction between the heating, cooling and bypass loops so as to cause the heat transfer fluid to flow, the fluid circulating in the bypass loop (c) under the action of the pump bypasses both the low temperature radiator and the second heat exchanger such that the intake air is neither heated nor cooled by this fluid at the first heat exchanger. - a first heat exchanger comprising a heat transfer fluid inlet and a heat transfer fluid outlet and positioned in the air intake circuit between the compressor and the engine, - a second heat exchanger positioned on the main exhaust line of the engine and collecting the heat energy from the exhaust gases, transferring said energy to a heat transfer fluid circulating in a heating loop from a heat transfer fluid outlet and a heat transfer fluid inlet, - a cooling loop connecting the heat transfer fluid outlet of the first heat exchanger to the heat transfer fluid inlet of a low temperature radiator and connecting the heat transfer fluid outlet of said low temperature radiator to the heat transfer fluid inlet of the first heat exchanger, - a bypass loop connecting the heat transfer fluid inlet and the heat transfer fluid outlet of said first heat exchanger, - a control valve is positioned at one junction common to the heating, cooling and bypass loops so as to control the circulation of heat transfer fluid in selectively each of said heating, cooling and or bypass loops, - a heat transfer fluid circulation pump is positioned between the first heat exchanger and a junction between the heating, cooling and bypass loops so as to cause the heat transfer fluid to flow,