Intake air temperature sensor function - GF07.04-P-2100-02H

Engines 602, 604, 605, 606 

Shown on model 202 to 11/94 

Fig 1: Identifying Intake Air Temperature Sensor And NTC Resistor

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

The NTC resistor (b) integrated in the intake air temperature sensor (B17) alters its electrical resistance in line with the ambient air temperature. NTC means negative temperature coefficient, in other words the electrical resistance becomes less as the temperature rises.

Example:

Intake air temperature

20°C

40°C

Resistance

approx. 6000 Ω

approx. 2600 Ω