Mazda CX-9 2007 - Operation

COOLING SYSTEM [MZI-3.5]
01-12–8
FAN CONTROL MODULE CONSTRUCTION/OPERATION [MZI-3.5]
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Construction
• Fan control module is installed on the radiator cowling.
Operation
• The fan control module drives the each fan motors based on the cooling fan control signals sent by the PCM
according to the following:
— Engine coolant temperature
— Vehicle speed
— Whether refrigerant pressure switch (middle) is on or off
— Whether magnetic clutch is on or off
• The fan control module allows continuously variable control of the fan motor rotation rate reducing fan operation
noise and power consumption.
Without Towing Package
COOLING FAN
MOTOR NO.2
COOLING FAN
MOTOR NO.1
FAN CONTROL
MODULE
FAN CONTROL
MODULE NO.2
COOLING FAN
MOTOR NO.2
RADIATOR COWLING
COOLING FAN
MOTOR NO.1
FAN CONTROL
MODULE NO.1
WITHOUT TOWING PACKAGE WITH TOWING PACKAGE
RADIATOR COWLING
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PCM
COOLING FAN
MOTOR NO.1
FAN CONTROL MODULE
COOLING FAN
MOTOR NO.2
COOLING FAN RELAY
IGNITION SWITCH
BATTERY
COOLING FAN ELECTRICAL SYSTEM WIRING DIAGRAM
MM
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