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Gearbox position sensor wiring on manual d3 - HELP!!!
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vanpeebles
 


Member Since: 20 Mar 2018
Location: North East
Posts: 150

United Kingdom 2005 Discovery 3 TDV6 SE Manual Cairns BlueDiscovery 3

Yes, it tells me to put the gearbox into neutral to select low range, even though it is. I'm wondering if it needs a XY calibration? Although everyone seems to do them in low range to make it easier.
  
Post #204815324th Apr 2019 8:38 am
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Briscoe05
 


Member Since: 25 Mar 2019
Location: Lincoln
Posts: 67

United Kingdom 2005 Discovery 3 TDV6 SE Auto Tonga GreenDiscovery 3

So is it still not working now the wires are sorted? Have you reset the ECU since sorting the wires?
  
Post #204821924th Apr 2019 12:02 pm
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vanpeebles
 


Member Since: 20 Mar 2018
Location: North East
Posts: 150

United Kingdom 2005 Discovery 3 TDV6 SE Manual Cairns BlueDiscovery 3

I've reset the faults with an IID, but not calibrated the XY yet. I'm wondering if the cable has come apart from the splice?
  
Post #204822024th Apr 2019 12:04 pm
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Briscoe05
 


Member Since: 25 Mar 2019
Location: Lincoln
Posts: 67

United Kingdom 2005 Discovery 3 TDV6 SE Auto Tonga GreenDiscovery 3

Possible I guess, but i wouldn't have thought a factory splice would come apart that easy.
  
Post #204822524th Apr 2019 12:13 pm
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vanpeebles
 


Member Since: 20 Mar 2018
Location: North East
Posts: 150

United Kingdom 2005 Discovery 3 TDV6 SE Manual Cairns BlueDiscovery 3

Briscoe05 wrote:
The other side of the image zoomed 👍



First splice by trash can symbol on my screenshot, is where landrover splice it before the transmission control module


Have u got one a bit more zoomed in more on the bottom part with pins and splice please? I'm going to print it all out and have a go on Saturday Smile
  
Post #204845625th Apr 2019 7:17 am
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vanpeebles
 


Member Since: 20 Mar 2018
Location: North East
Posts: 150

United Kingdom 2005 Discovery 3 TDV6 SE Manual Cairns BlueDiscovery 3

Ok, so we traced the wiring issue to the two blue and red wires (pins 6 and 2) on the gearbox sensor getting swapped over when we repaired the plug/wires. (You can get plugs online, but beware, the locating notch can be on the left or right side). Embarassed

We continuity tested successfully, all the pins on the gearbox sockets back to the plug that goes into the TCCM in the engine bay.

I now have low range again, and it drives fine, but I only get an N on the dash and N on the 4x4 display on the screen. I tried to calibrate it, went in reverse fine with a small r, and beep. But then never shows anything other than N.

Using my iid tool, both xy have a live value of 2.1 volts, but never changes from that. Ocassionally the little n on the speedo flickers.

Does anyone have any info on the xy sensor itself?

Any ideas? Smile
  
Post #20513057th May 2019 7:27 am
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rrhool
 


Member Since: 28 Aug 2014
Location: Norfolk
Posts: 4398

United Kingdom 2007 Discovery 3 TDV6 SE Manual Zermatt SilverDiscovery 3

Why dont you get a gearbox harness to replace yours complete?

One on bEay at the moment -

https://www.ebay.co.uk/itm/Land-Rover-Disc...ctupt=true

Must be easier than trying to rewire it? Thumbs Up
 Richard


D3 SE 2007. Triumph 2.5Pi 1973. Ferguson TEA20 1948.



Discovery 2 4.0 ES 2001- Gone
Discovery 1 300Tdi ES '95 - Gone
Range Rover Classic '79 - Gone 
 
Post #20513147th May 2019 8:29 am
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vanpeebles
 


Member Since: 20 Mar 2018
Location: North East
Posts: 150

United Kingdom 2005 Discovery 3 TDV6 SE Manual Cairns BlueDiscovery 3

It was just the single plug that got damaged on the top when we lowered the gearbox Smile (on that auction, the one at the top right of the picture). It's funny I know all those cables/plugs off by heart now Very Happy

I reckon it would be curse word getting that lot into position. Laughing

The thought did cross my mind though Smile
  
Post #20513157th May 2019 8:33 am
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vanpeebles
 


Member Since: 20 Mar 2018
Location: North East
Posts: 150

United Kingdom 2005 Discovery 3 TDV6 SE Manual Cairns BlueDiscovery 3

I have a feeling my xy sensor is kaput. The disco drives fine, but only displays n or occasionally flashes off. It does detect reverse, but no forward gears. (so calibration not possible) but I also tried calibration via iid.

Does anyone have any experience of faulty xy sensors?
  
Post #20582824th Jun 2019 9:26 am
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