Cooling Fan Description and Operation

Cooling Fan Description and Operation (LAT) (2.4L Hybrid)

Cooling Fan Control

The engine cooling fan system consists of one cooling fan and two relays. Voltage is supplied to the relays through the 30A MAIN FAN and 30 A AUX FAN fuses. The engine control module (ECM) controls the low speed fan operation by grounding the AUX FAN relay control circuit. When the AUX FAN relay, which is the low speed relay, is energized, voltage is delivered to the cooling fan Cooling Fan Resistor. The ECM controls the high speed fan operation by grounding the MAIN FAN relay, which is the high speed relay, control circuit. When the MAIN FAN relay is energized, voltage is delivered directly to the cooling fan. The cooling fan motor is grounded through its own ground circuit.

Resistor Assembly

The low speed cooling fan supply voltage circuit passes through a single 0.3 ohms cooling fan motor resistor. The resistor assembly is serviceable.