ECT sensor (afterglow system) location/task/function - GF15.20-P-3102H

ENGINE 604.910 in MODEL 202.121 to 31.7.96

ENGINE 605.910 in MODEL 202.125

ENGINE 605.960 in MODEL 202.128 to 31.3.96

ENGINE 604.912 in MODEL 210.004 to 31.5.96

ENGINE 605.912 in MODEL 210.010 to 31.5.96

ENGINE 606.912 in MODEL 210.020 to 31.5.96 with CODE (491) U.S. version

Fig 1: Identifying ECT Sensor (Afterglow System) Location/Task

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

	ECT sensor (afterglow system) function	The ECT sensor (afterglow system) (B11/8) measures the coolant temperature and supplies this data to the preglow time relay (N14) for regulating preheating and afterglow time, and to the engine coolant temperature gauge in the instrument cluster which then displays the coolant temperature
	ECT sensor (afterglow system) function	The two NTC resistors integrated in the ECT sensor (afterglow system) (B11/8) adjust their electrical resistance in line with the coolant temperature. NTC means negative temperature coefficient, in other words the electrical resistance decreases and temperature increases