Engine Coolant Temperature Gauge: Notes
WARNING: This page is about a different car, the 2006 Ford F550 Super Duty, 2006 Ford F450 Super Duty, and 2006 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.