Coolant temp gauge not working - 09 Gen with 4.6

[koomenator]

Hit a deer (or I should say the deer hit me) with my 09 Genesis sedan. I have slowly put the car back together myself. The only problem that I have at this point is the gauge for the coolant temp is not working and the radiator fan stays on all the time.
I replaced the coolant temp sensor along with the extension wire (as the extension wire connector was damaged) going to the temp sensor, but that did not fix the issue.
There is some module that the radiator fan plugs into, but not sure how to test this and or the temp gauge.
Anybody have any advice before I shell out big bucks at the dealership?

-b

 

[edizzle89]

you might try to get a scanner and see if the ECM is reading the correct coolant temp as the ECM is what controls the fan to come on and off, there might be other wiring damage somewhere else in the circuit.

I dont know about the Genesis but some cars have 2 temp sensors, one for the ECM and one for the temp gauge, you might see if there's a second one.