Component description Temperature sensors for charge air, coolant and fuel Turbo air Characteristic 1 2 Plug connection Coolant temperature sensor, Fuel temperature sensor Characteristic 2 3 Plug connection Function The temperature sensors for charge air, coolant and fuel are NTC resistors. The coolant temperature sensor is located in the coolant circuit, the charge-air temperature sensor is located in the charge-air circuit downstream of the charge-air cooler and the fuel tem- perature sensor is located in the fuel circuit. They supply the control unit with information on the coolant, fuel and charge-air temperatures. 17