Temperature Gauge
WARNING: This page is about a different car, the 2002 Volvo C70, 2001 Volvo C70, 2000 Volvo C70, 1999 Volvo C70, and 1998 Volvo C70. However, it is still accessible from the selected car via links, so may be relevant.
The engine control module (ECM) calculates engine temperature based on signals from the engine coolant temperature (ECT) sensor (4). This information is used for engine management. The information is transmitted to the temperature gauge in the combined instrument panel.