Malfunction indicator lamp (MIL)
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2007 Volvo V70, 2006 Volvo V70, 2005 Volvo V70, 2004 Volvo V70, and 2003 Volvo V70. However, it is still accessible from the selected car via links, so may be relevant.
The malfunction indicator lamp (MIL) only lights in the combined instrument panel (driver information module) (5/1), if certain emissions related diagnostic trouble codes (DTCs) are stored in the engine control module (ECM) (4/46) or gearbox control module (TCM) (4/28). The signal between the driver information module and engine control module (ECM) is directly connected.