Engine Coolant Temperature Gauge
WARNING: This page is about a different car, the 2007 Ford Pickup, 2007 Ford F550 Super Duty, 2007 Ford F450 Super Duty, and 2007 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
The instrument cluster monitors the engine coolant temperature data received from the PCM over the communication network, and commands the temperature gauge indication with a corresponding movement of the pointer. The temperature gauge also indicates when failsafe cooling is active.