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2015 D4 won't start - Earth strap?
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Nasher
 


Member Since: 07 Mar 2009
Location: Clanfield, North of Pompey - UK
Posts: 2668

England 2016 Discovery 4 3.0 TDV6 HSE Lux Auto Loire BlueDiscovery 4
2015 D4 won't start - Earth strap?

Morning all.

Parked my 2016 D4 HSE lux up yesterday, left it on charge all day and now it won't start.
Which is a real pain as I wanted to move it out of the way for a skip lorry to collect the skip it's blocking in!

fault codes are the same as ethanicus! has in this thread:
https://www.disco3.co.uk/forum/disco-4-201...ight=start

Although I'm also getting an actuator stuck fault code.

So obviously a good place to start looking is the engine to body earth strap.
Can anyone tell me exactly where it is?

To test the theory I'd like to try running a jump lead between the engine and -ve battery terminal, but having whipped the engine cover off I couldn't see anywhere to attach the clamp to the engine!
Does anyone have any ideas where to put it?

Also, what actuator could it be?
I forgot to take a note of the code, but will have another look shortly.
At least I'm working from home today.

Thanks

Nasher.
 Heaven doesn't want me, and hell is afraid I'll take over. 

Last edited by Nasher on 21st May 2020 8:01 am. Edited 1 time in total 
Post #214771921st May 2020 7:24 am
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Nasher
 


Member Since: 07 Mar 2009
Location: Clanfield, North of Pompey - UK
Posts: 2668

England 2016 Discovery 4 3.0 TDV6 HSE Lux Auto Loire BlueDiscovery 4

Fault code list:


 Heaven doesn't want me, and hell is afraid I'll take over.  
Post #214772321st May 2020 7:50 am
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eightfoot
 


Member Since: 12 Apr 2015
Location: sunny essex
Posts: 760

United Kingdom 2005 Discovery 3 TDV6 S Auto Bonatti GreyDiscovery 3

Is the rotary gear dial raised?
 please excuse any grammer/punctuation mistakes,i'm thick,thankyou
current vehicles 2005 d3 2013 d4 
 
Post #214774321st May 2020 8:49 am
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Nasher
 


Member Since: 07 Mar 2009
Location: Clanfield, North of Pompey - UK
Posts: 2668

England 2016 Discovery 4 3.0 TDV6 HSE Lux Auto Loire BlueDiscovery 4

Basically I jump in, put my foot on the brake, press the start button, the dash lights up as usual then nothing happens. If I take my foot off the brake I get a message saying press brake to start engine.

My gear selector doesn't usually raise until after the engine has started, so doesn't raise up.

I am a little concerned that having it plugged into my CETEK all day yesterday has done something to an ECU!

Nasher.
 Heaven doesn't want me, and hell is afraid I'll take over.  
Post #214774521st May 2020 8:54 am
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NJSS
 


Member Since: 06 May 2009
Location: Catherington, Hampshire.
Posts: 10464

United Kingdom 2016 Discovery 4 3.0 SDV6 Landmark LE Auto Waitomo GreyDiscovery 4

Could the brake light switch be an issue?

I have one somewhere if you need one Simon.

Nigel
 Am I Gammon or Woke ? - I neither know nor care.

2016 Discovery 4 Landmark
2011 Mercedes Benz SL350 (R230)
1973 MG B GT V8 - 3.9L John Eales engine, 5 speed R380 gearbox, since 1975.
1959 MGA roadster - 1.9L Peter Burgess Engine - 5 speed gearbox
Past LRs - Multiple FFRs, Discos & a Series I - some petrol, some diesel,
none Electric or H2 fuel cell - yet.
There are 10 types of people in this world: Those who understand binary, and those who don’t. 
 
Post #214774621st May 2020 8:55 am
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Disco_Mikey
 


Member Since: 29 May 2007
Location: Dundee, Scotland
Posts: 20713

Scotland 2005 Discovery 3 TDV6 HSE Auto Cairns BlueDiscovery 3

Provide a temporary earth with a jump cable, see if it starts then Thumbs Up
 My D3 Build Thread

TDV8 Retrofit Build Thread 
 
Post #214774821st May 2020 8:58 am
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Nasher
 


Member Since: 07 Mar 2009
Location: Clanfield, North of Pompey - UK
Posts: 2668

England 2016 Discovery 4 3.0 TDV6 HSE Lux Auto Loire BlueDiscovery 4

DM

Hi

Been trying to do that, but can't find a point on the engine fron the top to connect a jump lead from the battery -ve.
Was expecting a lifting eye or something but can't see one.
Sure there was one on my D3

Nasher.
 Heaven doesn't want me, and hell is afraid I'll take over.  
Post #214775121st May 2020 9:00 am
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Nasher
 


Member Since: 07 Mar 2009
Location: Clanfield, North of Pompey - UK
Posts: 2668

England 2016 Discovery 4 3.0 TDV6 HSE Lux Auto Loire BlueDiscovery 4

NJSS wrote:
Could the brake light switch be an issue?

I have one somewhere if you need one Simon.

Nigel


Thanks Nigel.

i think the brake light switch is OK.
If I take my foot off the brake with my finger on the Start button I get a message to press the brake pedal to start engine, which suggests it's OK.

Nasher.
 Heaven doesn't want me, and hell is afraid I'll take over.  
Post #214775321st May 2020 9:02 am
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Disco_Mikey
 


Member Since: 29 May 2007
Location: Dundee, Scotland
Posts: 20713

Scotland 2005 Discovery 3 TDV6 HSE Auto Cairns BlueDiscovery 3

Lifting bracket next to the oil pressure sensor Thumbs Up
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TDV8 Retrofit Build Thread 
 
Post #214775721st May 2020 9:09 am
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Nasher
 


Member Since: 07 Mar 2009
Location: Clanfield, North of Pompey - UK
Posts: 2668

England 2016 Discovery 4 3.0 TDV6 HSE Lux Auto Loire BlueDiscovery 4

Thanks DM

I put a jump lead between the -ve terminal and what I assume you are talking about, a black metal bracket with a couple of M10 threaded holes in it.

The engine did turn over, but where my jump lead was only connecting through a small area of paint all I got was a puff of smoke from the bracket where the jump lead was attached.

I crawled under the car, and having taken off the small cover at the front of the wheelarch managed to trace the Earth wire up towards the engine.

It's very loose, and flapping around, so i assume it's broken.

Do you have a part number DM?

Thanks

Nasher.
 Heaven doesn't want me, and hell is afraid I'll take over.  
Post #214776421st May 2020 9:42 am
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Hot Tub
 


Member Since: 15 Aug 2017
Location: Milton Keynes
Posts: 1071

England 2009 Discovery 3 TDV6 HSE Auto Zermatt SilverDiscovery 3

I would have thought any earth strap with correct size hole and length from any motor factor would do. Someone will probsbly prove me wrong.
 Welsh Collie Chauffeur Service To Barney & Rooney.  
Post #214776821st May 2020 9:47 am
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Nasher
 


Member Since: 07 Mar 2009
Location: Clanfield, North of Pompey - UK
Posts: 2668

England 2016 Discovery 4 3.0 TDV6 HSE Lux Auto Loire BlueDiscovery 4

It's not just a simple earth strap by the look of it. it's got some pre-formed bends and insulation.

I'll see what the lead time is.

Nasher.
 Heaven doesn't want me, and hell is afraid I'll take over.  
Post #214777021st May 2020 9:53 am
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Ceekay
 


Member Since: 17 May 2009
Location: Bury
Posts: 2057

United Kingdom 2016 Discovery 4 3.0 SDV6 HSE Lux Auto Waitomo GreyDiscovery 4

the last gateway module I had reported by the IID tool was related to the stop/start battery being in-op and had it replaced but it didnt stop the vehicle starting so I would think that may be a result of the problem rather than a cause as such.

Hope you get it sorted soon, I believe the earth strap does fail on some of the later models from what ive read Thumbs Up

Whoops posted minutes after you had found the fault and updated Rolling Eyes
 D4 HSE Lux MY16 Club Waitomo
D3 HSE MY06 missing her still… 
 
Post #214777121st May 2020 9:54 am
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Disco_Mikey
 


Member Since: 29 May 2007
Location: Dundee, Scotland
Posts: 20713

Scotland 2005 Discovery 3 TDV6 HSE Auto Cairns BlueDiscovery 3

Nasher wrote:
It's not just a simple earth strap by the look of it. it's got some pre-formed bends and insulation.

I'll see what the lead time is.

Nasher.


Usually, the issue is between the chassis and body

The new earth cable is a Censored to fit, bolts onto the engine mount, then chassis, then body

I've cut up an old D3 one to go specifically between the chassis and body points, in a crisis Laughing

Id imagine any 4/500A strap would do the job just fine
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TDV8 Retrofit Build Thread 
 
Post #214781021st May 2020 12:14 pm
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Nasher
 


Member Since: 07 Mar 2009
Location: Clanfield, North of Pompey - UK
Posts: 2668

England 2016 Discovery 4 3.0 TDV6 HSE Lux Auto Loire BlueDiscovery 4

Yep, not a job I'm looking forward to, mainly because it looks like the whole wheel arch liner will have to come out.

It appears to have broken off right at the end where it connects to the engine.

Nasher.
 Heaven doesn't want me, and hell is afraid I'll take over.  
Post #214783521st May 2020 1:45 pm
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