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Falcon Flyer · 11th December 2019, 04:48

OK. I've taken the seats out and confirmed that 12v applied directly to the element circuits get the seats toasty warm.

I have located the heated seat grounding point at the bottom of the NS A pillar, and cleaned the crimped rings with a wire brush.

At the switch end, black is earth, and the yellow shows +12v, (I guess that's the permanent (ignition) live feeding through the seat thermistors?

When I measure resistance across the switch in operation, it shows 0.8 ohms between black and yellow. I have tried different switches, they all do the same. (oh, and I've even shorted the black to yellow, bypassing the switch........NOTHING!)

I have applied a new earth for the switch, no change.

There must be a common fault here, as both seats do not work, but I cannot fathom out why!

11th December 2019, 04:48	#7
Falcon Flyer Gets stuck in R75 CDTi Auto Conn SE Mk1 Saloon Join Date: Feb 2010 Location: Crowthorne, Berkshire Posts: 665 Thanks: 190 Thanked 64 Times in 54 Posts	OK. I've taken the seats out and confirmed that 12v applied directly to the element circuits get the seats toasty warm. I have located the heated seat grounding point at the bottom of the NS A pillar, and cleaned the crimped rings with a wire brush. At the switch end, black is earth, and the yellow shows +12v, (I guess that's the permanent (ignition) live feeding through the seat thermistors? When I measure resistance across the switch in operation, it shows 0.8 ohms between black and yellow. I have tried different switches, they all do the same. (oh, and I've even shorted the black to yellow, bypassing the switch........NOTHING!) I have applied a new earth for the switch, no change. There must be a common fault here, as both seats do not work, but I cannot fathom out why! __________________ The only 75 with a non-factory fitted, factory fitted sunroof!!!!