Fan, Water and Fuel Pump Outputs
These functions are used to drive relays for functions around the engine. For a better overview of what the available outputs are, see Output Channels in the Outputs menu.

The coolant fan and water pump use a start temperature at which point the outputs are activated, and will deactivate when the temperature has fallen below this temperature minus the hysterisis value.
You can use the water pump output function to drive a second stage coolant fan if that is more useful to you.

When the ECU is started it will drive the fuel pump relay for a given number of seconds, this is used to prime the system and can be useful if you have no check valve in the system and need to build pressure before starting.
Once the engine stops turning (no trigger signal) the pump will turn off after a given number of seconds of inactivity.