Coolant Level Control
WARNING: This page is about a different car, the 2002 Oldsmobile Intrigue, 2001 Oldsmobile Intrigue, and 2000 Oldsmobile Intrigue. However, it is still accessible from the selected car via links, so may be relevant.
The engine cooling system contains an engine coolant level switch to alert the driver in the event of a coolant loss. When the engine coolant level switch reads a low coolant level in the surge tank, the switch opens. This sends a coolant loss signal to the IPC by the coolant level switch signal circuit. Ground is provided by G203 for the coolant level control.