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Home >> Cadillac >> 1993 >> Allante >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P131: Active Knock Sensor Failure >> Test Conditions

Test Conditions

  1. MAP value not varying by more than 10 kPa at steady state operation.
  2. MAT value greater than 30°C.
  3. Coolant temperature 40°C or greater.
  4. Battery voltage 11 or greater volts.
  5. Engine RPM:
    • Between 1200 and 1225 RPM or;
    • Between 3600 and 5100 RPM.
  6. Engine running for at least 2 seconds.
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