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Baytown



Member Since: 30 Jan 2016
Location: Port Arthur Tasmania
Posts: 80

Australia 2012 Defender 110 V8 Petrol CSW Blenheim Silver
Loss of Speedometer and Odometer function 2012 110
Hi every one.

My 2012 110 has lost function to the Speedo and odometer.

Tachometer still works fine, all error lights still work fine, cluster illumination still works as does fuel and coolant needles.
The odometer led is still populated but not counting up.

Any ideas? It’s as if the two instruments have lost their signal, but not earth to the cluster. My Speedo transducer is working fine (checked yesterday).

It did stop working after the instrument cluster being removed to allow some access behind for other non related wiring, so perhaps connections at the loom are faulty, or something has come loose internally?

I don’t have access to another instrument cluster to swap out to check the wiring loom for faults vs the original cluster unfortunately.

Thanks for any advice.

Ken
Tasmania
Post #893344 23rd Mar 2021 2:39am
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andydef90



Member Since: 09 Feb 2015
Location: yorkshire
Posts: 617

United Kingdom 2014 Defender 90 Puma 2.2 HT Corris Grey
is the speedometer electrical or mechanical just wondered if it could be a cable issue
Post #893406 23rd Mar 2021 12:52pm
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Race.it



Member Since: 27 Aug 2019
Location: Algeciras
Posts: 739

Spain 2010 Defender 110 Puma 2.4 SW Alaska White
think they are electrical (steper motors in the dash to move the dial)

Maybe first thing is to check connectors are seated correctly, the other thing I can think of is diagnostic software to see if the speed signal is still being given (can the diagnostics give that detail out? that I don't know) Searching for my first Defender...and started just as Covid hit, so talk about timing.

5 months after starting the search I found it, and here is the details
Post #893426 23rd Mar 2021 1:43pm
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blackwolf



Member Since: 03 Nov 2009
Location: South West England
Posts: 16807

United Kingdom 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
Electronic. It sounds to me as though there is an open circuit somewhere between the transducer and the Ipac.
Post #893428 23rd Mar 2021 1:44pm
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Martin
Site Admin


Member Since: 02 Apr 2007
Location: Hook Norton
Posts: 6459

United Kingdom 2015 Defender 90 Puma 2.2 XS CSW Montalcino Red
How do you know the speedo transducer is OK?  1988 90 Td5 NAS soft top
2015 D90 XS SW
Post #893431 23rd Mar 2021 1:47pm
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Dinnu



Member Since: 24 Dec 2019
Location: Lija
Posts: 3140

Malta 2012 Defender 90 Puma 2.2 CSW Santorini Black
Did you notice any reduction in power or different throttle response? Had a case but on a 2.4, if the ecu is not getting the speed signal from the sensor. 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing
2012 90 CSW, 2.2TDCI, Santorini Black
Post #893441 23rd Mar 2021 2:27pm
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Baytown



Member Since: 30 Jan 2016
Location: Port Arthur Tasmania
Posts: 80

Australia 2012 Defender 110 V8 Petrol CSW Blenheim Silver
They’re electrical Andy.

andydef90 wrote:
is the speedometer electrical or mechanical just wondered if it could be a cable issue
Post #893522 23rd Mar 2021 7:14pm
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Baytown



Member Since: 30 Jan 2016
Location: Port Arthur Tasmania
Posts: 80

Australia 2012 Defender 110 V8 Petrol CSW Blenheim Silver

Click image to enlarge



Click image to enlarge

Ha, no, no loss of power.
I’ve an LS3 6.2 litre V8 engine instal with a 6 speed auto transmission!
The fault only started after the instrument cluster was removed and replaced and the connection has been checked and rechecked.



Dinnu wrote:
Did you notice any reduction in power or different throttle response? Had a case but on a 2.4, if the ecu is not getting the speed signal from the sensor.
Post #893525 23rd Mar 2021 7:23pm
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Baytown



Member Since: 30 Jan 2016
Location: Port Arthur Tasmania
Posts: 80

Australia 2012 Defender 110 V8 Petrol CSW Blenheim Silver

Click image to enlarge



Click image to enlarge

Martin wrote:
How do you know the speedo transducer is OK?


Connected my ICarsoft Reader and it gives a speed when driving so the transducer is working and cabling intact up and until the in cabin fuse box. The fault must be in the cluster or the loom after the OBD2 port.

I’m betting the connector and will go back and quadruple check the connector for faulty pins. I think as identified in the following photos. Pin 2 and 13 are to the Transducer.
Post #900308 28th Apr 2021 4:30am
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manuel



Member Since: 24 Oct 2022
Location: barcelona
Posts: 3

Spain 2007 Defender 110 Puma 2.4 SW Chawton White
Dinnu wrote:
Did you notice any reduction in power or different throttle response? Had a case but on a 2.4, if the ecu is not getting the speed signal from the sensor.


Hi Dinnu.

I have this same problem exactly, I lost function my speedometer functionality and together with it the throttle response got significantly reduced. Specially on the 6th gear.

Did recovering the speedometer recover your throttle response? I am becoming a bit mad already with this issue.

Thank you very much in advance.
Post #968765 24th Oct 2022 12:57am
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Dinnu



Member Since: 24 Dec 2019
Location: Lija
Posts: 3140

Malta 2012 Defender 90 Puma 2.2 CSW Santorini Black
Yes it did. 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing
2012 90 CSW, 2.2TDCI, Santorini Black
Post #968766 24th Oct 2022 3:58am
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Baytown



Member Since: 30 Jan 2016
Location: Port Arthur Tasmania
Posts: 80

Australia 2012 Defender 110 V8 Petrol CSW Blenheim Silver
Hi fellas;

Manuel, sorry mate when you say “Recovered” the Speedo, do you mean ‘replaced’ with another unit (cluster), or are you talking of an OBD data entry to ‘reactivate’ the Speedo/odometer?

If so perhaps I’ve had that data entry fall off my ECU. That May Be the original problem!

I’ve still not replaced my faulty Speedo/odometer unit having made due with a decent HUD unit with GPS speed.

Now my fuel level gauge is next to useless (no needle deflection from empty) and the temp gauge is on its way out. Both the temp gauge and the fuel gauge needles WILL work properly if I tap (multiple and firmly) on the dash top, so it’s not the cabling into the unit.

I’ve another suitable cluster that I swapped out to test the connections due to the speedometer/odometer issues and both fuel and temp deflected correctly immediately, so it’s at least the cluster for the two latter failures.

My issue re an easy-acceptable fix is that my custom engine/transmission fit involve a digital gear indication and animation in the centre of the cluster. I have to have it transferred or another fitted to my new cluster, then re security coded and the current (rough) odometer readout for the new engine/trans coded into the display.

There’s no one in Tasmania, Australia that I can find to do the work, so I have to arrange and transport the vehicle across Bass Strait to Victoria.

A huge logistic exercise and cost.🥺
Post #968773 24th Oct 2022 7:13am
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manuel



Member Since: 24 Oct 2022
Location: barcelona
Posts: 3

Spain 2007 Defender 110 Puma 2.4 SW Chawton White
Hi Baytown.

In my case it was just a fuse, when replaced the speedo worked again and consequently my ECU received the data correctly and put the turbocharger to work again.

Thanks Dinnu. I was going mad with the possibility of a turbocharger replacement. Smile

Thank you all
Post #968849 25th Oct 2022 8:58am
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jim4244



Member Since: 13 Apr 2014
Location: Bedfordshire
Posts: 612

England 1998 Defender 90 300 Tdi CSW Epsom Green
Following.

Any update?

Jim
Post #969820 3rd Nov 2022 10:00am
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manuel



Member Since: 24 Oct 2022
Location: barcelona
Posts: 3

Spain 2007 Defender 110 Puma 2.4 SW Chawton White
as said when the speedometer issue was solved the turbo came back to life on its own.
There must be a link between the speed sensor and the turbocharger function through the ECU.
Post #969828 3rd Nov 2022 10:40am
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