2004 Suzuki Eiger. My cooling fan is no longer coming on. Used to work fine and came on. For some reason it no longer does and the engine light will come on now when it's hot. Cannot locate my owners manual.

Some ignition part is old w resistence makn it hot. Umay need to test each component. Its probly the coil or module. Buya a clymer or haynes book for total repair

Hey Brad
With the info you have provided, it seems to point to the ignition switch as the problem. (the clicking you should hear comes from the solenoid contacts - not the starter button). There is probably one wire in the switch that has broken or come unsoldered or other wise not making the right connection.

I would start with a voltage drop test to find exactly where the voltage ends. Use a meter and start on the positive side. Hope this is helpful.

could be its not hot enough yet

There must be something wrong with the electronics monitoring/controlling the temp (and thus not sending the command to start the fan). You can try using a multimeter to check the wiring yourself for starters.

Fan motor bad or thermo switch bad.you can test the fan, hook it to a battery if it runs than its the thermo switch

Yup.It's getting hot.Check the fan relay is operable.Fans gotta run.Most likely a bad heat sensor tho.That's a water temperature sending unit that tells the relay when to turn the fan on.Ifya gonna own these toys,learn the basics on how to care for them.There is ALWAYS going to be something going wrong.Get a manual.

More than likely the temp sensor has gone short circuit. Locate and replace when engine cool. Once you locate it, if you disconnect it the fan should stop running.

relay for cooling fan triggered by sensor...low oil shut off switch..defect ignition switch or module

sounds like your thermal switch that controls the fan isnt working, that would be the first place to look, try connecting the two terminals to the thermistor and see if the fan comes on, good luck