Temperature Cooling Fan Wiring Diagram - 1 – Not used. 3 – Not used. 5 60 Cooling fan module – without trailer tow 40 Cooling fan module – with trailer tow. 6 40 Cooling fan module – with trailer tow. Shared Knowledge "Heating, Ventilation and Air Conditioning (HVAC)" "Outside Compressor or Fan Motor Not Starting or Running" 26 April 2011. Updated: 7 August 2012 . Summary: the most common causes for the outside compressor and fan not running when they should is either: a seized fan or a blown run capacitor.. HOW TO USE THE CIRCUIT DIAGRAMS 4 HOW TO USE THE CIRCUIT DIAGRAMSAll of the information in this folder is intended for use with the Electrical Reference Library booklet..