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Discussion Starter · #1 ·
My Daughters 2009 Corsa D has a coolant Fan problem.
It never turns on the coolant Fan even if motor overheats and warning lights are on..
I replaced the Thermostat and learned to do the readout of the temp sensor in the ODO meter display (it goes over 110C in a city trip.).
I cannot find any temp switch on the Radiator (there is no wiring on the right side of the radiator). It had only the resistor pack witch is measured to be Good. Obviously the 2 40Amp Coolant Fan fuses F8 and F9 are checked to be good.
So What’s switching the radiator Fan on/off and where to find the circuit diagram.
How to check the fan it selves..

It’s a 1.0 Litre 3 Cyl motor witch I guess does not heat up very fast…
Running stationary on the parking gives no more than 92C.
On the motorway only 85C..
Thermostat and radiator are working fine apparently.

Looking forward to any idea.
Benno
 

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Hi there you need to take the cooling fan relay out which on a Corsa C is in the corner of the fuse box and is green, bridge terminals 30 and 87 and the fan should run, that will test the main circuit.....if that works you have a problem with the control side of the relay, like temperature sender unit or ecu etc.....could do a code test....from Fred in Essex.
 

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Discussion Starter · #3 ·
Thanks...
Unfortunatly my fuse box looks quite different and contains no green Relays.

Does anyone know witch relay in my CorsaD fusebox is the Fan relay?
 
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