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Circuit Description

WARNING: This page is about a different car, the 2002 Oldsmobile Aurora and 2001 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.

The engine oil level switch closes when the oil level is at the proper level. With the ignition ON, and the engine OFF, the PCM should detect a low voltage on the signal circuit. With the engine running, the PCM should detect a transition from a low voltage to a high voltage on the oil level switch signal circuit.

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