Haltech F10 - Manual (Page 82)

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Note: When using the TCC function, the Aux. In & Aux. Out Function in
the input/output set-up page must be set for Torque Converter Control. When
using TCC, other functions that use the Aux. Input line cannot be used.
16.6 Electric Thermatic Fan Control (TF)
This function can be used to switch on a thermofan when the engine temperature exceeds a
certain value. The fan will stay on until the engine temperature drops below a second value.
Note: 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 thermofan, fused and relay switched;
F10 programming software and cable.
Install the wiring for the thermofan to one of the Digital/PWM outputs as described in figure
16.6. Be sure that the relay contacts are rated higher than the current drawn by the thermofan.
Run the F10 programming software and go to the Options page. Select the Thermofan
function on the appropriate output and set the two temperatures as required.
Switch On Temperature
The temperature the engine coolant must exceed to switch the fan on.
Switch Off Temperature
The temperature the engine coolant 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 repeatedly.
Figure 16.6. Example circuit for a Thermatic Fan.