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Intake air temperature sensor, location/task/design/function - GF07.04-P-2100F: Notes

ENGINE 104.943 /944 /991 /994 as of 1.8.96 

ENGINE 104.995 with CODE (494a) USA version with CODE (807) Model year 1997 with CODE (808) Model year 1998 with CODE (498) as of Model Year 97 Japanese version 

ENGINE 104.941 as of 1.8.96 

ENGINE 111.921 /942 as of 1.9.98, 111.943, 111.944 as of 1.8.96, 111.946 as of 1.6.98, 111.947 /973, 111.975 as of 1.8.96, 111.977 

ENGINE 111.945 in MODEL 208.335 /435 as of 1.6.98, 202.020 /080 as of 1.9.98 

ENGINE 111.974 with CODE (494a) USA version with CODE (807) Model year 1997 with CODE (808) Model year 1998 

ENGINE 112.910 /911 /912 /913 /914 /916 /917 /920 /921 /922 /923 /940 /941 /942 /943 /944 /946 /947 /949 /953 /954 /955 /970 /972 /973 /975 

ENGINE 113.940 /941 /942 /943 /948 /960 /961 /963 /965 /966 /967 /968 /969 

ENGINE 119.980 /981 /982 /985 

ENGINE 120.982/ 983 

ENGINE 137.970 

Fig 1: Identifying Intake Air Temperature Sensor
G04736495
Example of intake air temperature Engine 119, 120 Engine 104, 111, 112, 113, 137
Engine 104, 111 (HFM)
Resistor ±5 %
Resistor ±5 %
10 °C 9670 Ω 3604 Ω
20 °C 6060 Ω 2420 Ω
40 °C 2600 Ω 1166 Ω
  Intake air temperature sensor, location Engine 104, 111 (HFM), Engine 119, 120 (ME1.0)
IMPORTANT
On engine 104 ME, 111 ME, 112, 113,137 the intake air temperature sensor is integrated in the hot film mass air flow sensor.
GF07.04-P-2100-01F 
  Intake air temperature sensor, task Records the inlet air temperature and sends a signal to the engine control unit. The signal is used for calculating the air mass. The amount injected and the point of ignition are influenced.  
  Intake air temperature sensor, design Plastic housing with a NTC resistor, 2-pin plug connection  
  Intake air temperature sensor function The NTC resistor integrated in the intake air temperature sensor, alters its electrical resistance in line with the intake air temperature.
NTC means Negative Temperature Coefficient; which means that the electrical resistance drops as the temperature increases.