That sensor has been replaced on your chassis to the 2 wire/blue sensor...the 3 pin is for the earlier systems.
The 3 pin was a binary on/off style sw and controlled aux fan at 105C and comp cut-out at 115C
The blue replacement is a thermistor style [ neg. coef.] and sends a temp dependant variable resistance value to the ACC panel, which then switches the same components , but at 105C. aux. high fan activation and 130C. comp cut-out.