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Re: E30 Outside Temp sensor location (archive)
[ Follow Ups ] [ 3-series (E30) Message Board ] [ Msg. Board FAQ ]
Posted by Tom Knowles on July 10, 2000 at 16:42:04:

In Reply to: Re: E30 Outside Temp sensor location posted by MTP325iC on July 09, 2000 at 20:08:38:

First try just unplugging the connector and re-plugging it after you've found it as advised by the other posts here. If that doesn't work, I know of no way to "test" the sensor as it is a solid-state (semiconductor device) that actually passes a small amount of current in direct proportion to the temperature. It depends on a constant voltage applied across it to do this.

You can, however test the system w/o the sensor: open ckt the temp should read -22*F. See my post late last week for resistors you can substitute across the plug to check the OBC. It was "ambient sensor trick"..

Tom

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