Member Since: 13 Aug 2009
Location: Not London Anymore (or the US for that matter)
Posts: 1923
Disco 3 cruise control advice please
Hi all,
I have a V8 and the cruise control no longer functions at all. It has been intermittent for a while but now no longer works at all. My question is, do I start by ordering a new clock aping at several hundred dollars, or is there a cheaper place to start?
Very grateful for any advice. PAGODA
29th Jul 2018 1:23 am
Narpy
Member Since: 18 Jul 2011
Location: Stockport
Posts: 7830
Remove the steering wheel airbag and carefully examine the little loom with the white terminal block.
The cables are a known problem and break right at the crimps. Be aware, the coloured insulation often remains intact so cables may visually look ok but careful examination will find the problem.
In this pic you can see Ive extended the white and brown cables after suffering the very same cruise control problems you're currently having.
Click image to enlarge
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29th Jul 2018 1:32 am
lynalldiscovery
Member Since: 22 Dec 2009
Location: Maidstone
Posts: 7274
On the D2 the brake light switch has 2 functions, 1 to apply the brake lights and 2 to switch off the cruise as you press the brake pedal, might be the D3 is the same?
Certainly a cheap place to start
29th Jul 2018 2:11 am
M3DPO
Member Since: 22 Sep 2010
Location: Notts.
Posts: 8097
Best way to check the cables is with a bulb meter not a MMeter, as this puts a load on the cable, they are like screwdriver with a bulb in the handle and a cable that clamps onto a battery, the prob end (-neg) is touched onto one end of the cable and the other end of the cable touched onto the +pos of the battery, if good the bulb lights or just use a 12v bulb in an holder It can when others can't,
It will when others won't,
It goes where others don't.
29th Jul 2018 8:13 am
pagoda
Member Since: 13 Aug 2009
Location: Not London Anymore (or the US for that matter)
Posts: 1923
Thanks all.
@Narpy - great! Will pull it apart and take a look at the cables.
PAGODA
29th Jul 2018 2:45 pm
Narpy
Member Since: 18 Jul 2011
Location: Stockport
Posts: 7830
If I remember correctly, the brown wire ( lengthened with a red section in the pic above ) was the cruise control master and on my car it was broken right at the crimp on the white block.
The white was ( if I recall correctly ) a later problem with the same issue but this time it effected the steering wheel illumination of the buttons.
Good luck. Mods:
Front Fogs + Halos
FBH Remote Control
The 1st Ever RRS Modded Grill
Garmin Nuvi + D4 Surround + Reversing Camera.
D4 Steering Wheel.
Rear Boot Spoiler.
Twin Brake Lights.
Wing Mirror Indicator Repeaters.
Long Roof Rails
Make your own Narpy grill thread
I'm not scared, I'm outta here.
29th Jul 2018 3:28 pm
titters
Member Since: 27 Apr 2013
Location: london
Posts: 419
I fannied on with changing steering wheel switches and clock springs only changing the cheapest part - the brake light switch - last. Guess what my issue was....2006 TDV6 HSE Wrapped Matt Black STOLEN NOT RECOVERED
29th Jul 2018 7:10 pm
trailhound
Member Since: 27 Aug 2015
Location: Colchester
Posts: 697
Narpy wrote:
If I remember correctly, the brown wire ( lengthened with a red section in the pic above ) was the cruise control master and on my car it was broken right at the crimp on the white block.
The white was ( if I recall correctly ) a later problem with the same issue but this time it effected the steering wheel illumination of the buttons.
Good luck.
Quick question - if it breaks at the crimp/block, how or what tool do you need to re-insert/crimp a new piece into the block?
29th Jul 2018 7:24 pm
Narpy
Member Since: 18 Jul 2011
Location: Stockport
Posts: 7830
They are the same size as those wires and connectors used inside old PC's so suggest you pull an old computer apart and splice a few in.
You can buy the crimp ends too but no idea what they are called and you'll need to buy the crimp tool too.
Suspect somebody will know FBH uses the same size and cables are available for those from the forum shop.Mods:
Front Fogs + Halos
FBH Remote Control
The 1st Ever RRS Modded Grill
Garmin Nuvi + D4 Surround + Reversing Camera.
D4 Steering Wheel.
Rear Boot Spoiler.
Twin Brake Lights.
Wing Mirror Indicator Repeaters.
Long Roof Rails
Make your own Narpy grill thread
I'm not scared, I'm outta here.
29th Jul 2018 7:50 pm
trailhound
Member Since: 27 Aug 2015
Location: Colchester
Posts: 697
I’ve got loads of old pc’s will give that a go.
Guess that means I’ll need a tool/key to remove the crimp from the pc connector.
Cheers
29th Jul 2018 9:47 pm
pagoda
Member Since: 13 Aug 2009
Location: Not London Anymore (or the US for that matter)
Posts: 1923
Narpy wrote:
Remove the steering wheel airbag and carefully examine the little loom with the white terminal block.
The cables are a known problem and break right at the crimps. Be aware, the coloured insulation often remains intact so cables may visually look ok but careful examination will find the problem.
In this pic you can see Ive extended the white and brown cables after suffering the very same cruise control problems you're currently having.
Click image to enlarge
Quick update and thank you to Narpy - pulled the airbag out and looked at the cables; couldn't see any breaks. However, I did pull all the plugs out and re-seat and now cruise works, so clearly something wrong with the wiring. I imagine it's a temp solution but for now it works. So thanks.PAGODA
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