Disconnect the fan motor electrical connector and then connect the motor directly to the battery with a fused jumper cable on terminal B. Use another jumper wire to ground terminal A. If the fan motor doesn't come on, replace the motor. Test the fan relays in the engine compartment fuse/relay box and the radiator fan switch. If the relay(s) and the fan switch are okay, check all wiring and connections to the fan motors. To replace the cooling fan assembly, disconnect the cable from the negative battery terminal, set the parking brake and block the rear wheels, remove the lower splash shield from under the radiator, drain the cooling system, disconnect the fan connectors and fan switch or ECT sensor connector from the radiator, remove any wiring harness clamps or anything else connected to the fan shroud assembly, remove the upper radiator hose from the radiator and move it aside, unbolt the cooling fan assembly from the top of the radiator, carefully lift the fan shroud assembly out of the engine compartment, detach the fan from the motor, remove the mounting screws to detach the fan motor from the shroud, remove the radiator cover, remove the upper radiator hose, disconnect the fan electrical connectors, remove the top radiator brackets, unbolt each fan shroud assembly from the radiator, detach any wiring harnesses or other parts that attach them to the radiator or engine compartment, tilt the radiator forward and carefully remove each fan shroud assembly, install the new cooling fan assembly, refill the cooling system, reconnect the battery, and start the engine and allow it to reach normal operating temperature, then verify proper fan operation. To replace the cooling fan switch, drain the cooling system, raise the front of the vehicle and support it securely on jackstands, remove the lower splash shield from under the radiator, disconnect the electrical connector, then unscrew the switch from the radiator, install the new switch with a new sealing ring, refill the cooling system, and start the engine and allow it to reach normal operating temperature, then verify proper fan operation.
Posted by HondaPartsNow Specialist