6.1 Temperature ?

Hear is fan operation on a 2008 challenger SRT copied from OEM service info:

Theory of Operation

The Powertrain Control Module (PCM) sends a signal to the Totally Integrated Power Module (TIPM) to turn the cooling fan on or off depending upon the engine coolant temperature. The low speed cooling fan is commanded on when the temperature is at or above 103° C (217° F) and turned off at or below 101° C (214° F). The high speed cooling fan is commanded on when the temperature is at or above 108° C (226° F) and turned off at or below 105° C (221° F).