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DTC P1673 - ENGINE HOT 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

Output Driver Modules (ODM) are used by PCM to turn on current-driven devices needed to control various engine and transaxle functions. Each ODM can control up to 7 outputs, including low engine oil level indicator driver circuit, by supplying ground to device PCM is commanding on. ODMs can diagnose each circuit individually. If ODM "D" output 3 (hot light indicator driver circuit) detects an improper voltage level, P1673 is set.

Conditions required to set DTC are

  1. Ignition is on.
  2. An improper voltage level has been detected on engine hot light indicator driver circuit.
  3. Conditions present for at least 20 seconds.