Skylark L4-144 2.4L DOHC VIN T SFI (1997)
Radiator Cooling Fan Motor: Specifications
Temperature Specifications
COOLING FAN "ON" TEMPERATURE
The fan relay will be commanded ON when:
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Engine coolant temperature reaches 106°C (223°F) or more.
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A/C clutch requested.
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Vehicle speed is less than 38 MPH.
The cooling fan relay will be commanded ON regardless of vehicle speed when:
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Any DTC is set that causes the Malfunction Indictor Lamp (MIL) to be illuminated.
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Engine coolant temperature is 151°C (304°F) or more.
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A/C refrigerant pressure is high.
COOLING FAN RUN-ON
The PCM usually powers down 10 to 30 seconds after the ignition is turned OFF. Since the cooling fan is PCM controlled, the PCM may remain
powered up for up to 7 minutes after the ignition is turned OFF to provide a ground in order to energize the cooling fan relay.
This is called a fan Run-On and will occur if any of the following combinations of conditions exist when the ignition is turned OFF.
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Engine coolant temperature greater than 100°C (212°F) and intake air temperature greater than 80°C (176°F).
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Engine coolant temperature greater than 112°C (234°F) and intake air temperature greater than 70°C (158°F).
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Engine coolant temperature greater than 115°C (241°F).
The PCM and cooling fan will remain ON until these combinations of conditions no longer exist, up to a maximum of 7 minutes.
If the cooling fan is OFF when the PCM powers down, it will remain OFF regardless of any temperatures until the ignition is turned ON again.