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Old 02-18-2020, 07:04 AM
Kati2020 Kati2020 is offline
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Cooling system

My x3 Fan wont come on when i plug CTS sensor. I see 9v wire voltage at ecm ground wire....other wire reads ok . Strangely i have 10v at thermostat signal white wire.....if i cut the wire i get 5v from ecm end.. And 10v from thermostat end ??? Any clues??
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Old 02-18-2020, 07:15 AM
Doug Huffman's Avatar
Doug Huffman Doug Huffman is offline
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Engine cooling schematic wiring diagram

newTIS.infobeta
Home / BMW F97 X3 M SAV / Wiring Diagrams and Functional Description / Power train / Engine electronics / Engine cooling /

https://www.newtis.info/tisv2/a/en/f...ing/1Vndg8Yr9a
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Scepticism and Animal Faith (1923)
Scepticism is the chastity of the intellect, and it is shameful to surrender it too soon or to the first comer: there is nobility in preserving it coolly and proudly through long youth, until at last, in the ripeness of instinct and discretion, it can be safely exchanged for fidelity and happiness.
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Old 02-18-2020, 01:24 PM
Kati2020 Kati2020 is offline
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[QUOTE=Doug Huffman;13254649]newTIS.infobeta
Home / BMW F97 X3 M SAV / Wiring Diagrams and Functional Description / Power train / Engine electronics / Engine cooling /

https://www.newtis.info/tisv2/a/en/f...ing/1Vndg8Yr9a[/QUOTE

] Hi Doug , Im kinda new here so Thx 4 all the help... Just Curious do you know this fan acually works. I mean i know theyre DMe energized and vary by Rpm, temp etc.. But when are they supposed to kick in normally and or what speed. . besides full??
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Old 02-18-2020, 02:11 PM
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Doug Huffman Doug Huffman is offline
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__________________
Scepticism and Animal Faith (1923)
Scepticism is the chastity of the intellect, and it is shameful to surrender it too soon or to the first comer: there is nobility in preserving it coolly and proudly through long youth, until at last, in the ripeness of instinct and discretion, it can be safely exchanged for fidelity and happiness.
(The Works of George Santayana p. 65)

Eschew eristical argumentation. I am responsible for what I write, not for your understanding of it.
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