Hello Simon,
Mandrake wrote:STOP and temperature light flicker on, cleaning these contacts may prevent that happening again ?
Yes, that’s what’s cured it for good on mine.
Contrary to what I wrote above, the cooling fan Bitron has 15 pins instead of 14.
It has one row of 8 pins, and a second, offset row of 7 pins.
Not all pins are used, there are, I think, 2 empty terminals in the loom socket.
the brown temperature sensor located ?
That’s very different to mine, which hasn’t got any sensor or wire at the top of the radiator.
Annoying to find that there are that many differences between versions of the same car.
Probably that the designers had bottles of plonk under their desks.
The brown sensor is normally screwed into the back of the thermostat housing, along with 2 other temperature sensors, and it’s impossible to see, or even to reach them, at least through the top.
Maybe that you can see and reach them from underneath, but I’ve never been there, as I’m not equipped to safely hold up the car.
unplugged the bitron, the cooling fans still operated with the air conditioner
Well, that would indicate that this Bitron is something else, that mine doesn’t have.
That may be the one that has to do with what I called the ‘extra frills’ of the VSX.
By 'frills' I meant equipment like motorised and automatic reversing mirrors and motorised seats, and wasn’t thinking of the suspension.
behind that little grill that sometimes has an alarm LED in the middle of it ?
Yes, it’s in there, a 2-pin temperature sensor, and the buzzing fan motor.
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Quick fiddle with the air conditioning pressure sensor plug today.
With engine running, and aircon switched on, pulled the plug out, and the aircon clutch released silently, but the fans kept spinning at the low speed.
Put it back in, and the clutch engaged again.
Tried several times, always the same.
This confirms that the sensor has ‘normal pressure’ sensing, besides high and low pressure sensing.
More experiments to come, will post.
Regards,
Terry.