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FAQ / REFERENCE => M42 Reference => Topic started by: bimmer91 on November 15, 2013, 08:46:16 AM

Title: how work ect with 1 wire on a 318IS 91
Post by: bimmer91 on November 15, 2013, 08:46:16 AM

hi i'm a new member and i have a problem with my 318IS 91.I dont understand how the ground work on my ect sensor.In the bentley shop manuel i have2 wire on the etc sensor but on my car i have only 1 (brown and red).how the ecm take the return signal ???
Thanks a lot for reply.

Title: Re: how work ect with 1 wire on a 318IS 91
Post by: DesktopDave on November 15, 2013, 10:24:27 AM

Coolant temp sensor?  There are two - the single wire goes to the coolant temp gauge. Look for another one right next to it, that's the DME sensor.

Title: Re: how work ect with 1 wire on a 318IS 91
Post by: bimmer91 on November 15, 2013, 12:17:55 PM

tanks a lot
i will stop to loose my time on the single wire coolant temp. sensor

Title: Re: how work ect with 1 wire on a 318IS 91
Post by: DesktopDave on November 15, 2013, 03:04:09 PM

Sure thing.  There is no signal on that sensor - it's just resistance. It'll have high resistance when it's cold (> 6K Ohms), dropping down as it gets hotter.  Fully warmed up it should only have 100 ohms or so.