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 Post subject: Testing Hall Sensor Loom
PostPosted: Tue Aug 29, 2017 8:30 am 
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Joined: Thu Jul 03, 2014 6:07 pm
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Location: Cheadle Hulme
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Hi guys,

anyone know how I can test the wiring to my Hall sensor.

The plug and nearby wiring was shot and when I delved in there one of the wires was broken and the other just a single strand.

So I've replaced it with a new section of shielded cable and a new plug.

Car is now running better but Id like to actually test after a while to make sure my solder connections are still good without taking the joint apart.

Do the wires lead back to the DME connector so I could do a continuity test?

Thanks

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Ian K
1991 944 S2 Cab - Titanium Grey
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 Post subject: Re: Testing Hall Sensor Loom
PostPosted: Tue Aug 29, 2017 11:32 am 
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Joined: Tue Nov 19, 2013 10:48 am
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Yes the wires lead back to the ecu

So should be testable, I seem to remember it's green left, shield centre red right

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 Post subject: Re: Testing Hall Sensor Loom
PostPosted: Tue Aug 29, 2017 12:14 pm 
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Well,
my wires at the plug were Brown & White so thats a good start!

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1991 944 S2 Cab - Titanium Grey
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 Post subject: Re: Testing Hall Sensor Loom
PostPosted: Tue Aug 29, 2017 12:21 pm 
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Ah yes you have to excuse me I have 968 they are a bit different,

But the sensor is a closed circuit so no earth still the wires will go back to the ecu

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2013 A4 177 TDI Quattro Ibis White
2013 Volvo XC60 D5 brilliant car


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 Post subject: Re: Testing Hall Sensor Loom
PostPosted: Tue Aug 29, 2017 10:08 pm 
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Joined: Wed May 14, 2014 2:14 pm
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Location: South Manchester/ Cheshire
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Same problem on my 968 Ian...

The lower half of the plug disintegrated and is just about staying together.... I've bought some three pin plug kits to rebuild the connector and have some spare if it'll help with a more permanent fix.

I'm just down the road from you in High Lane near Disley....

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1998 Boxster 2.5 - Silver for everyday
1993 968 Coupe - Guards Red needing TLC
1989 944 S2 Cab - Guards Red for summer fun
1982 Rothmans 924 2.0 NA - the best livery ever
2004 Mazda MX5 - Silver for everyday
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 Post subject: Re: Testing Hall Sensor Loom
PostPosted: Wed Aug 30, 2017 4:50 pm 
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Thanks Blackadder,

I have successfully replaced mine with a new section of shielded cable added to the loom and a new plug- it seems OK, but Id like to figure out a way to test my solder joints in the loom are still intact at a later date without stripping off all the heat shrink I added.

Im thinking I can do a continuity test from the plug in the engine bay to somewhere on the DME plug if I can find the right pins.

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1991 944 S2 Cab - Titanium Grey
2018 RR Velar P300 R-Dynamic


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 Post subject: Re: Testing Hall Sensor Loom
PostPosted: Wed Aug 30, 2017 7:30 pm 
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Location: South Manchester/ Cheshire
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No problem Ian, I'm sure the wiring diagram will help point you towards the right pins although electrics aren't my forte so can't help any more on that bit. I do have a Durametric diagnostics kit if you ever need one....

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1998 Boxster 2.5 - Silver for everyday
1993 968 Coupe - Guards Red needing TLC
1989 944 S2 Cab - Guards Red for summer fun
1982 Rothmans 924 2.0 NA - the best livery ever
2004 Mazda MX5 - Silver for everyday
1979 Austin Healey Frogeye - Old English White


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 Post subject: Re: Testing Hall Sensor Loom
PostPosted: Thu Aug 31, 2017 4:40 pm 
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Joined: Thu Jul 03, 2014 6:07 pm
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Location: Cheadle Hulme
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Thanks Blackadder,

I might take you up on the Durametric offer - I have heard the ECU logs a "bad hall sensor" error if its not connected so that may read that?

Im off to France in it next week (new clutch fitted this week!) so I'd like to try and test it when I get back.

Many thanks for the offer by the way.

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1991 944 S2 Cab - Titanium Grey
2018 RR Velar P300 R-Dynamic


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