FAN CONTROL MODULE CONSTRUCTION/OPERATION [L3 Turbo]

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Construction

• Fan control module is installed on the radiator cowling.

• Fan control module cannot be separated from cooling fan motor No.1 because they are integrated.


1	Fan control module
2	Radiator cowling
3	Cooling fan motor No.1

Operation

• The fan control module drives the both fan motors based on the cooling fan control signal sent by the PCM according to the following:

- Engine coolant temperature

- Vehicle speed

- Whether A/C middle pressure switch is on or off

- Whether the A/C 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.


1	Cooling fan electrical system wiring diagram
2	Battery
3	Fan control module
4	Cooling fan motor No.1
5	Cooling fan motor No.2

Fail-safe function

1. Over-heat fail-safe

- If the internal area of the fan control module exceeds the specified temperature, the fan control module fixes the output duty value to the set value.

- If the internal area of the fan control module returns to the specified temperature, the fan control module returns to normal control.

2. Input signal open circuit fail-safe

- If there is an open circuit in the wiring harness between the PCM and the fan control module, the fan control module fixes the output duty value to the set value.