Quote:
Originally Posted by Chris_Top_Her
Going toi have to call CSC today. Pretty sure my radiator fan doesnt engage. Bike will be idling with the colander bars st 5 and flashing, fan never turns on. Then it jumped from 5 bars to 3 while riding and cooling down..
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First thing to do is check your coolant level, both in the overflow tank and in the radiator itself. All the fans in the world won't help if there isn't enough coolant in the system.
If the coolant level checks out, unplug the radiator fan's connection to the coolant switch in the radiator and jump the pins in the fan's connector to 12V and ground with jumper wires or a PowerProbe. If it kicks on, then you know that the fan is OK; if it doesn't, check the two pins in the connector with a multimeter set to ohms. This will check for any opens in the fan motor windings. It should not have any resistance, hence continuity or zero ohms should be shown on the multimeter.
Next check out the coolant switch in the radiator with a multimeter still set to measure ohms. It should be open with the coolant cold; when the coolant warms up it should close and zero out the resistance and turn on the fan. If the switch does not close when the coolant temp is at 4 bars, then it is definitely bad.