radiator fan Question
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radiator fan Question
I have an 05 and need to know if the fan is supposed to come on in accessory mode. Just got done reinstalling a new fan and fan control module and don't want to fill it up with coolant til I know for sure it will only come on if car is started or if it's supposed to come on in accessory mode.
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Joined: Oct 1999
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It will not come on if the control system doesn't see a need for the fan.
The ECM commands the fans ON under the following conditions:
• The engine coolant temperature goes above a calibrated amount.
• The engine oil temperature goes above a calibrated amount.
• The A/C pressure reaches a calibrated temperature.
• After the engine is shut OFF, if the engine coolant temperature at key-off is greater than a calibrated amount, or the A/C pressure is greater than a calibrated amount, the cooling fan is set to low speed. The fan will shut OFF if the temperature or pressure drops below a calibrated amount. The fans will shut OFF after 2 minutes, regardless of coolant temperature.
Bill
The ECM commands the fans ON under the following conditions:
• The engine coolant temperature goes above a calibrated amount.
• The engine oil temperature goes above a calibrated amount.
• The A/C pressure reaches a calibrated temperature.
• After the engine is shut OFF, if the engine coolant temperature at key-off is greater than a calibrated amount, or the A/C pressure is greater than a calibrated amount, the cooling fan is set to low speed. The fan will shut OFF if the temperature or pressure drops below a calibrated amount. The fans will shut OFF after 2 minutes, regardless of coolant temperature.
Bill
