2024 Infiniti QX55 EssentialFACTORY OEM SERVICE PROCEDURE

Cooling Fan

FUNCTIONS WITHIN THE SYSTEM 

Cooling fan motor receives cooling fan motor operating voltage from cooling fan control module. The revolution speed of cooling fan motor is controlled by duty cycle of the voltage.

INDIVIDUAL FUNCTION WITHIN THE SYSTEM 

The cooling fan is composed of the cooling fan motor which drives the cooling fan and the cooling fan control module which supply power.

INDIVIDUAL OPERATION 

Cooling Fan Control Module 

Cooling fan control module receives ON/OFF pulse duty signal from IPDM E/R. Corresponding to this ON/OFF pulse duty signal, cooling fan control module sends cooling fan motor operating voltage to cooling fan motor. The revolution speed of cooling fan motor is controlled by duty cycle of the voltage.

COMPONENT LOCATION 

The cooling fan motor and cooling fan control module are installed on the cooling fan shroud.

Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.