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Home >> Cadillac >> 1994 >> DeVille Base >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Self-Diagnostics >> DIC Messages >> SET TIMING MODE Message (4.9L Only)

SET TIMING MODE Message (4.9L Only)

  1. Set timing mode is designed to allow technician to disable spark advance when diagnosing ignition and fuel control problems. If message is displayed, PCM has sensed a ground in Pink/Black wire circuit and indicated IPC to display message.
  2. If message is displayed, ensure Data Link Connector (DLC) pin "B" is not grounded while engine is running, and/or ensure a ground does not exist in Pink/Black wire circuit between DLC and PCM connector C3 terminal E12. See Figure or Figure . Engine will operate at base engine timing as long as message is displayed.
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