engine managment light

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Hi everyone i am a new daihatsu owner and new to the site, I wonder if anyone can help with a couple of problems. The cooling fan does not seem to come on and while i was checking that i noticed that the engine managment light has come on.. Any idea why the fan wont come on and how do i check that.and are these two problems related.
Thank you.I have a 2002 hijet 1300 van