Coolant temperature sensor component description - GF07.04-P-6040V
ENGINE 272.920 in MODEL 203 up to Model Year 8
ENGINE 272.922 in MODEL 211
ENGINE 272.940 in MODEL 203 up to Model Year 8
ENGINE 272.941 in MODEL 203 up to Model Year 8
ENGINE 272.942 in MODEL 171 up to Model Year 8
ENGINE 272.943 in MODEL 211, 219
ENGINE 272.944 in MODEL 211
ENGINE 272.945 in MODEL 251 up to Model Year 8
ENGINE 272.946 in MODEL 221 up to Model Year 8
ENGINE 272.960 in MODEL 203 up to Model Year 8
ENGINE 272.963 in MODEL 171 up to Model Year 8
ENGINE 272.964 in MODEL 211, 219
ENGINE 272.965 in MODEL 221 up to Model Year 8
ENGINE 272.966 in MODEL 230 up to Model Year 8
ENGINE 272.967 in MODEL 164, 251 up to Model Year 8
ENGINE 272.970 in MODEL 203 up to Model Year 8
ENGINE 272.972 in MODEL 211
ENGINE 272.975 in MODEL 221 up to Model Year 8
ENGINE 272.985 in MODEL 211, 219
ENGINE 273.922 in MODEL 221 up to Model Year 8
ENGINE 273.923 in MODEL 164 up to Model Year 8
ENGINE 273.924 in MODEL 221 up to Model Year 8
ENGINE 273.960 in MODEL 211, 219
ENGINE 273.961 in MODEL 216, 221 up to Model Year 8
ENGINE 273.962 in MODEL 211
ENGINE 273.963 in MODEL 164, 251 up to Model Year 8
ENGINE 273.965 in MODEL 230 up to Model Year 8
ENGINE 273.967 in MODEL 209
ENGINE 273.968 in MODEL 221 up to Model Year 8
ENGINE 272.940 in MODEL 209
ENGINE 272.960 in MODEL 209
Location
The coolant temperature sensor is located at the rear in the left cylinder head.
Task
Detects the coolant temperature and supplies a voltage signal to the ME control unit.
Function
The NTC resistor integrated in the coolant temperature sensor, alters its electrical resistance in line with the coolant temperature. NTC is the abbreviation for "Negative Temperature Coefficient", which means electrical resistance falls as the temperature increases (hot conductor).
Example:
| Coolant temperature | Resistor | Voltage signal |
|---|---|---|
| 20 °C | 3090 Ω ±5 % | 3.39 V |
| 80 °C | 320 Ω ±5 % | 0.89 V |
Body
Metal casing with an integrated, highly responsive NTC resistor and a 2-pole, slanted plug connection. It is inserted into a bore hole and sealed with an O-ring. Fixing via a bracket.
The rapidly responsive NTC temperature sensor is supplied with 5 V by the ME control unit via a series resistor (1470 Ω ±1 %). Following a short-circuit to battery voltage or 5 V (without a series resistor), the temperature sensor coolant is defective.
The signal is plausible between 0.1 V to 4.93 V, otherwise a fault is identified and a substitute value taken by the ME control unit from a stored temperature model.