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Home >> Nissan-Datsun >> 2020 >> Altima SV, AWD >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System (Pr25DD) (1 Of 2) >> System Description >> System >> Cooling Fan Control >> System Description >> System Diagram
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System Diagram

GNSJSBIA5006GB-006Courtesy of NISSAN NORTH AMERICA, INC.

Components

Function

Crankshaft position sensor

Crankshaft Position Sensor 

Engine coolant temperature sensor

Engine Coolant Temperature Sensor 

Battery

ECM receives the battery voltage signal.

A/C auto amp.

  • ECM receives the cooling fan request signal via CAN communication.
  • ECM transmits the refrigerant pressure signal via CAN communication.

Combination meter

ECM receives the vehicle speed signal via CAN communication.

IPDM E/R

ECM transmits the A/C relay control signal via CAN communication.

Cooling fan relay

Cooling Fan 

Cooling fan motor