Engine control module (ECM) engine coolant temperature (ECT)
WARNING: This page is about a different car, the 2004 Volvo S40, 2003 Volvo S40, 2002 Volvo S40, 2001 Volvo S40, and 2000 Volvo S40. However, it is still accessible from the selected car via links, so may be relevant.
The engine control module (ECM) transmits a signal indicating the engine coolant temperature (ECT) on the Control area network (CAN). The automatic transmission uses the signal to govern lock-up.
Measurement range: -60 - +195°C