•  During regeneration of the diesel particulate filter, a constant intake air temperature in conjunction with the air bypass and the EGR throttle valve is of great importance. For this reason, an additional IAT sensor No.2 is installed in the airflow, downstream of the air bypass. This is used to set the most favorable air intake temperature during the regeneration phase.

•  When the engine is operating normally, the IAT sensor No.2 has no function.