Honda 19020-PE0-003 Fan, Cooling (Denso)

To check the cooling fan, turn the ignition switch ON, the thermo-switch should be grounded and should be closed to completed the ground when the engine reaches the correct operating temperature. Check the wiring, relays and control unit and replace thermo switch WHERE necessary. After having switched the ignition OFF, unplug the cooling fan wire connector, connect 12 volts to terminal A and join terminal B to the ground; if the cooling fan operates in a squeaky mode, then its replacement is necessary. To make removal and installation the initial step is to remove the negative battery cable, drain the cooling system and remove the upper hose if necessary. Third, further, remove the fan motor wire connector, undo the fan shroud attaching bolts and then remove both the fan and the shroud as a single unit. Disengage the fan and motor from the shroud, place the fan assembly back at the condenser, rejoin all the connections of the wires, and secure any disconnected hoses. Last, when tightening the mounting bolts on 1984-87 models, apply only enough pressure so they are not overly tight and will not break through the plastic material, then on 1988-91 models, apply the force as much as 16 ft. lbs. (22 Nm).

To check the cooling fan, turn the ignition switch to 'ON' position and on checking the thermo-switch, it should ground and therefore complete the circuit when the temperature of the engine is right. Check the wiring, the relay and the control unit and, if the thermo-switch is burnt or damaged, change it. Loosen the nut specified by the dot on both terminals of the cooling fan, turn the ignition switch to the 'ON' position, reconnect the cooling fan wire connector, then apply 12 volts to terminal A and ground terminal B of the connector indicated by the red arrow; if the cooling spins in any way other than smoothly and quietly, replace the cooling fan. For removal the negative battery cable should be disconnected, the cooling system should be drained and the upper hose if necessary should be removed. The fan motor wire connector must be disconnected by releasing two retaining clips seen from the rear of the hub, then the fan shroud attaching bolts are removed; after that, the fan and shroud as an assembly are removed while the fan and motor are taken off from the assembly of the shroud. For installation, screw the fan on the radiator and tighten the mounting bolts to 7 ft lbs. The electrical lead should be reconnected, the upper hose connected and cooling system topped up if required, with each stage being performed 10 Nm at a minimum.