Altima V6-3.5L (VQ35) (2003)
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Radiator Cooling Fan Control Module: Description and Operation
ENGINE OVER TEMPERATURE
System Description
NOTE: If DTC P1217 is displayed with DTC U1000 or U1001, first perform the trouble diagnosis for DTC U1000 or U1001. Refer to "DTC U1000,
U1001 CAN COMMUNICATION LINE". See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Diagnostic Trouble
Code Tests and Associated Procedures/U Code Charts
Cooling Fan Control
COOLING FAN CONTROL
The ECM controls the cooling fan corresponding to the vehicle speed, engine coolant temperature, refrigerant pressure, and air conditioner ON signal.
The control system has 3-step control [HIGH/LOW/OFF].
The ECM controls cooling fan relays through CAN communication line.
Operation