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Home >> Cadillac >> 1992 >> Seville Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Diagnostic Parameters >> Pcm Specific Override Codes >> ES09: Fixed Spark
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ES09: Fixed Spark

  1. Test conditions are transaxle in Park or Neutral and engine running. Calculated advance will be displayed when this test is selected. First time COOLER button on ECC panel is depressed, PCM will fix spark advance to 10 degrees BTDC; DIC will display 10.
  2. By depressing COOLER button a second time, PCM will calculate a 1-2 degree timing retard. Depressing WARMER button, PCM will calculate a 1-2 degree timing advance. If an advance selected is greater than calculated value, "==" will be displayed.
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