Circuit Description

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When the engine oil level is in the normal range, the engine oil level switch is a closed switch and the engine oil level switch signal is low.

When a low engine oil level condition is present, the engine oil level switch is an open switch and the engine oil level switch signal is high. The IPC receives a class 2 message from the PCM requesting illumination of the CHECK ENG OIL LEVEL indicator.

Fig 1: Low Engine Oil Level Indicator Always On (1 Of 2)

Courtesy of GENERAL MOTORS CORP.

Fig 2: Low Engine Oil Level Indicator Always On (2 Of 2)

Courtesy of GENERAL MOTORS CORP.