190E 2.3 (201.024) L4-2.3L (102.961) (1984)
Radiator Cooling Fan Temperature Sensor / Switch: Technical Service Bulletins
Electrical Center - Modified and Polarity Change
TO:
OUR MERCEDES-BENZ PASSENGER CAR DEALERS
DATE:
November 1986 REF..NO. 54/14,83/21
SUBJECT:
MODIFIED ELECTRICAL CENTER MODEL 201.024 MODEL YEAR 1984
FIGURE 1 - MODIFIED ELECTRICAL CENTER
FIGURE 2 - MODIFIED TEMPERATURE SWITCH
Beginning with model year 1985, a modified electrical center (Figure 1) was phased in since the polarity of the switch for the electro-magnetic engine
fan coupling was reversed from negative to positive. At the same time the 100°C temperature switch (S25/1, Figure 2) has been changed from a 1-pole to
a 2- pole version.
Note:
Only the modified electrical center is available as replacement. When installing the modified electrical center in subject vehicles, only the
2-pole 100°C temperature switch together with a supplemental wiring harness must be used.
Subsequent Installation of Supplemental Wiring Harness and 100°C Temperature Switch Model 201.024, Model Year 1984
1.
Remove air filter housing.