Grand Prix V6-3.1L VIN J (2000)
Engine Controls Schematics: I/P, Generator and Driver Information Display
CIRCUIT DESCRIPTION
The Engine Oil Level Switch is a simple float switch that is grounded when the engine oil level is OK. The PCM checks the Engine Oil Level switch
circuit at start-up. Before checking the state of the Engine Oil Level switch, the PCM performs a test routine based on time and engine coolant
temperature to ensure that the engine oil has drained back into the sump. To test for low oil level at start-up, both of the following conditions must be
present:
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The engine coolant temperature must be greater than 15°C (59°F).
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The engine coolant temperature at key ON must be at least 12°C (22°F) cooler than the engine coolant temperature at the last key OFF.
