Cooling Fan/Switch Wiring

[C411BRA]

Anyone got a diagram for this.

What I need to know is if the main rad cooling fan is independant of all systems bar its sensor in the radiator.

Something like this:

12v +ve__________/1 _________FUSE_________/2 _______FAN_____GND
1 - Ign Switch
2 - Fan Switch

Its just that mine is still playing sillybuggers turning on/off at random. I just want to make sure that nothing else is going to switch it on/off other than the temp switch in the Radiator.

[nikp]

The haynes manual has wiring diagrams - do you have one of these? Although they can be a bit of a bugger to get your head round.

[ecosseM]

does it do it when car switched off? if thats what your on about, the v6 does this.. or it just doing it in general

[C411BRA]

It only does it when the ignition is on. Regardless of the indicated engine temp. Some times it on for a second or two then off then on again and off and so on, yet other times its on for ages or off for ages.

This all manifested itself after i flushed the engine, and refilled it. I'm pretty sure theres no air locks as the coolant bridge was not issuing bubbles after a bit of pipe squishing, running the engine a couple of times and re doing it.

Im assuming that the fan is soley controlled by the temp switch on the radiator, which would indicate the temp switch being knacked.

I dont have a haynes yet tho.

[hoglabs]

> Im assuming that the fan is soley controlled by the temp switch on the radiator

No, on the V6 there are two temp switches (three if you have aircon fitted).
These switches run the various cooling fans and secondary water pump through a series of relays.

More info here:
<a href="http://www.v6calibra.com/common/v6_calibra_coolant_system.htm" target="_blank">http://www.v6calibra.com/common/v6_calibra...lant_system.htm</a>

Have a look at the fault finding charts at the bottom of the link page.
From the intermittent nature of the fault you describe I would suspect dodgy connection/loose wire or a faulty relay somewhere.