J2000/Sunbird V6-191 3.1L VIN T MFI (1994)
Oil Pressure Warning Lamp/Indicator: Description and Operation
The Oil Pressure Indicator comes on to warn the driver when the engine oil pressure is low. Battery voltage is applied to one side of the bulb. A ground
path is supplied by the Fuel Pump Switch/Oil Pressure Switch. It is closed when the oil pressure is below 13.8 kPa (2 psi). After the engine starts and
normal oil pressure builds up, the Fuel Pump Switch/Oil Pressure Switch opens. The Oil Pressure Indicator goes out.
