Acura 3.5 RL Manual page 1019

Description
Fan Control Unit
The fan control unit makes calculations based on signals from the radiator fan control sensor. It then controls the opera-
tion of the radiator fan, condenser fan and A/C system.
ON
OFF
ON
OFF
ON
OFF
172°F (78°C)
183°F (84°C)
183°F (84°C)
194°F (90°C)
225°F (107°C)
228°F (109°C)
RED/WHT
When engine coolant temperature is above 183°F (84°C),
the fan control unit turns Tr1 ON, and the radiator fan
(Low) and condenser fan runs (Low).
When engine coolant temperature is above 194°F (90°C),
the fan control unit turns Tr2 ON, and the radiator fan
(High) runs, and the condenser fan (High) goes on.
When engine coolant temperature is above 228°F (109°C),
the fan control unit turns Tr3 OFF, and stops the A/C com-
pressor.
*1: CONDENSER FAN RELAY
*2: RADIATOR FAN RELAY
*3: RADIATOR FAN MAIN RELAY