BCM Data Parameters:: BD21
WARNING: This page is about a different car, the 1992 Oldsmobile Toronado. However, it is still accessible from the selected car via links, so may be relevant.
Coolant temperature (COOLANT TP) displayed in degrees Celsius (°C) from -40 to 151. This value is sent from ECM to BCM. If circuit malfunctions, ECM will send BCM a "failsoft" value for display.