Component description for the intake air temperature sensor - GF07.04-P-6070P

ENGINE 642 in MODEL 164.1/8, 203.0/2, 221.0/1, 251.0/1 up to Model Year 8

ENGINE 642 in MODEL 209.3/4, 211.0/2/6, 219.3

ENGINE 642 in MODEL 463

Fig 1: Locating Intake Air Temperature Sensors

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Location

The intake air temperature sensors are integrated in the left hot film mass air flow sensor (B2/6) and the right hot film mass air flow sensor (B2/7) respectively.

Task

They detect the intake air temperature and transmits a corresponding voltage signal to the CDI control unit (N3/9).

Body

The intake air temperature sensor possesses an integral measuring resistor with negative temperature coefficients (NTC)

Function

The corresponding NTC measuring resistor alters its electrical resistance in line with the intake air temperature. The electrical resistance decreases as the temperature rises.