yesterday my 2005 Disco 3 SE was working perfectly
This morning I put the ignition key on 1, everything lights up perfectly... but when I try to start, nothing, all the lights go out...
I immediately thought of a dead battery but that is not the case.
The battery is good (on the green light) and even with another battery from an other car, the starter barely turns.
I suspect a wiring trouble whith the starter motor...
But I don't know where to start...
( alternator was changed last year)
Thank you for your advice
4th Feb 2024 5:29 pm
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10678
You could use a jumplead to connect between the battery - and the engine metal work, and try and start it.
also check the thick earth cable between the battery and the inner wing (where it goes on the inner wing)
4th Feb 2024 7:59 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 5043
And if that earth proves OK check the starter cable hasn't shorted onto the front diff!yµ (idµ - eAµ) ψ=mψ
4th Feb 2024 8:35 pm
Nick13
Member Since: 02 Jan 2023
Location: Marseille
Posts: 1
thank you both for this advice
I'm going to try as soon as I can this week.
Wath surprises me is that everything goes out on the dashboard when I try to start it, but it doesn't come back on when I release the key. While the battery still appears to be charged (green light on the battery)
PROFS have you ever had this short on the diff?
I also heard about a short problem in the left front Wong, but I can't find this post (now that I need it)
5th Feb 2024 6:42 am
NTG
Member Since: 22 Oct 2022
Location: GAP
Posts: 34
Click image to enlarge
This morning is worse
Yesterday I charged the battery and put it back this morning with 13 volts.
Well now nothing lights up on the dashboard!!!
I added another battery with cables, but nothing lights up...
By moving the negative battery cable (I think) I triggered something and I heard a noise, a light was flashing on the dashboard (see photo), I don't know what it's for, and that stopped as soon as I turned the ignition key.
In summary, a charged battery but no power
Gap odb II is not powered therefore useless
I honestly don't know where to look...
How to Access the Ground Cable Connection in the Inner wing ?
Thank you for your help
Last edited by NTG on 5th Feb 2024 9:26 am. Edited 1 time in total
5th Feb 2024 9:20 am
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 14129
Does this also help ref the earth connection point, personally to make life easier I removed the plastic wheel arch liner , think u can access it by just peeling the front of the inner arch back
There’s also some earth points behind the headlight
Have u also checked the fuses in case something blew
Click image to enlarge
Click image to enlarge
5th Feb 2024 9:24 am
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10678
What year is your car. Early one don’t have the cable in the wing.
I’d say is the earth cable between the battery and the inner wing as mentioned in my post.
Cable isn’t very long. You can see both ends
5th Feb 2024 9:50 am
NTG
Member Since: 22 Oct 2022
Location: GAP
Posts: 34
Thank's
It's a Disco3 SE from 2005
5th Feb 2024 9:56 am
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 14129
Hi Pete
Is this the one ur talking about behind the fuse box plse
To test it just get a jump lead from the battery to a good earth on the engine, this will tell you if its the earth cable problem. I would also check the red cable to and around the bottom of the engine as its know to chafe in this area. Also check for water ingress in the main PCM and 4x4 unit behind the battery.
Flack
5th Feb 2024 10:15 am
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10678
That looks the one Gary.
5th Feb 2024 10:25 am
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 14129
Many thks Pete 😀
5th Feb 2024 11:20 am
NTG
Member Since: 22 Oct 2022
Location: GAP
Posts: 34
Thanks to everyone and especially to Pete !
I used a jumper cable to connect the battery and motor, and it started !
I noticed that some equipment was no longer working :
exterior temperature sensor and odb socket.
Now I have to fix this ground wire...
Should I change it or work on the connections to the frame?
6th Feb 2024 7:54 am
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10678
gstuart wrote:
Hi Pete
Is this the one ur talking about behind the fuse box plse
Click image to enlarge
I would work on this connector by the battery.
Remove, clean, refit
6th Feb 2024 12:31 pm
NTG
Member Since: 22 Oct 2022
Location: GAP
Posts: 34
Thanks again Pete!
I cleaned the connection (which seemed clean ...) and the engine started immediately !
On the other hand, I still have no ODB and no external temperature information on the dashboard
I’m going to test the ODB fuse but I don't know which one protects the exterior temperature sensor.
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