Circuit Description

WARNING: This page is about a different car, the 1998 Buick Riviera. However, it is still accessible from the selected car via links, so may be relevant.

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

Conditions for setting DTC:

Ignition on.
Improper voltage level has been detected on generator light driver circuit.
Conditions present for at least 30 seconds.