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Home >> Buick >> 1989 >> Reatta >> Repair and Diagnosis >> Engine Performance >> System >> 3.3L/3.8L Component Tests >> Description >> Chart C12A - Cooling Fan Functional Check (3.3L "N" Body) >> Notes

Chart C12A - Cooling Fan Functional Check (3.3L "N" Body): Notes

ECM will energize cooling fan when Code 14 or 15 is set, A/C pressure is high or coolant temperature is greater than 212°F (100°C).

NOTE: Test numbers refer to test numbers on diagnostic charts.
  1. Fan should be on when ALDL "test" terminal is grounded.
  2. Fan should be running if the A/C compressor is running.