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Home >> Chevrolet >> 1999 >> Metro Base, 2D Hatchback >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Circuit Tests >> No Malfunction Indicator Light (PRIZM) >> Circuit Description
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Circuit Description

Malfunction Indicator Light (MIL) should remain on when ignition switch is in ON position and engine is not running. Battery voltage is applied to indicator bulb. PCM controls indicator bulb and turns it on by providing a ground path through MIL control circuit.

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