OMEM200 Installation Manual 2v10
18
The ECU has two software outputs switchable on coolant temperature values. These would normally
be used for radiator cooling fans. The two outputs may be set to two different temperatures to control
two fans or a single twin speed fan.
The radiator fans are not driven directly by the ECU, they must be controlled through a relay.
Radiator Fan Relay
12V from
battery
12V from
ignition switch
ECU Rad Fan
blue / black
Chassis earth
Fan
85
30
86
87
+
-
Radiator Fan 2 Relay
12V from
battery
12V from
ignition switch
ECU Bay Fan
Yellow / red
Chassis earth
Fan
85
30
86
87
+
-
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