Haltech E6M - Manual (Page 99)

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Figure 16.6. Example circuit for a Thermatic Fan.
16.7 Electric Intercooler Fan Control (IF)
This function can be used to switch on an electric fan on the intercooler when the inlet air
temperature exceeds a certain value. The fan will stay on until the temperature drops below a
second value.
NB: The electric fan cannot be driven directly by the ECU. A relay must be used to switch the
high currents drawn by the fan.
To use this function, you must have the following:
An electric fan, fused and relay switched;
E6H/E6M programming software and cable.
Install the wiring for the intercooler fan to one of the Digital/PWM outputs. This should be
done as described in figure 16.7 for the intercooler fan. Be sure that the relay contacts are
rated higher than the current drawn by the fan.
Run the E6H/E6M programming software and go to the Options page. Select the Intercooler
Fan function on the appropriate output and set the two temperatures as required.
Switch On Temperature
The inlet air temperature that must be exceeded to switch the fan on.
Switch Off Temperature
The temperature the inlet air must drop below before the fan will be switched off. This
parameter should be at least 5° lower than the Switch On temperature to prevent the
fan from switching in and out quickly.