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Home >> Buick >> 1998 >> Century Custom >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - 3.1L Engine >> Diagnostic Trouble Codes >> DTC P1663 - Generator Light Control Circuit Lumina & Monte CARLO) >> Circuit Description

Circuit Description

PCM turns on bulb, LED or driver information center indicator by supplying ground through the PCM.

Conditions for setting DTC: