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DTC P1663 - GENERATOR LIGHT CONTROL CIRCUIT Oldsmobile Silhouette II

Note. For circuit reference, see the appropriate WIRING DIAGRAMS article. For connector and terminal identification, see CONNECTOR IDENTIFICATION .

Circuit Description

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

Conditions for setting DTC

  1. Ignition on.
  2. Improper voltage level has been detected on generator light driver circuit.
  3. Conditions present for at least 20 seconds.