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Home >> Nissan-Datsun >> 1993 >> Sentra SE-R, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Miscellaneous Controls >> Radiator Cooling Fans (Except 240SX) >> Radiator (Cooling) Fan Control Test (Altima Without A/C)

Radiator (Cooling) Fan Control Test (Altima Without A/C)

  1. Start engine and warm to operating temperature. Ensure radiator fan operates at low speed. If radiator fan does not operate at low speed, go to RADIATOR (COOLING) FAN LOW SPEED CONTROL TEST (ALTIMA). If radiator fan operates at low speed, go to next step.
  2. Turn ignition off. Disconnect engine coolant temperature sensor harness connector. Start engine and ensure radiator fan operates at high speed. If radiator fan does not operate at high speed, see RADIATOR (COOLING) FAN HIGH SPEED CONTROL TEST (ALTIMA). If radiator fan operates at high speed, system is functioning properly.
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