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Electrical problems after rear arm replacement
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doz
 


Member Since: 15 Jun 2014
Location: Southampton
Posts: 436

United Kingdom 2013 Discovery 3 TDV6 SE Manual Cairns BlueDiscovery 3
Electrical problems after rear arm replacement

ok where to start.

replaced both upper and rear arms on both sides. had a hell of a todo with the upper rear bush on both sides. Car back together now but I'm getting the following fault codes.

FAULT 1 OF 4
ECU: Transfer Case
CODE:U0122
Lost communication with vehicle dynamics control module
(PERMANENT)
BUS SIGNAL/MESSAGE FAILURE -
MISSING A MESSAGE.

FAULT 2 OF 4
ECU: Ride Level
CODE:U0416
Invalid data received from vehicle dynamics control module
(PENDING)
BUS SIGNAL/MESSAGE FAILURE -
SIGNAL IS INVALID.

FAULT 3 OF 4
ECU: All Terrain Control
CODE:U0416
Invalid data received from vehicle dynamics control module
(PENDING)
COMPONENT FAILURE -
UNEXPECTED OPERATION.

FAULT 4 OF 4
ECU: All Terrain Control
CODE:U0421
Invalid data received from ride level control module
(PENDING)
COMPONENT FAILURE -
UNEXPECTED OPERATION.

This has caused problems with the ABS, suspension, terrain and a load of other Censored electrical systems i've never use Rolling Eyes

When I was doing the job I was struggling with the rear air shocks so using my Nanocom I depressurised all the air bags. To help with access I had to unplug the nearside rear ABS sensor and, nearside rear ride height sensor and I moved a module which is very close to the rear upper nearside mount.

So far I've tried clearing the faults and they come straight back, disconnected the battery and as I had to bleed the rear brakes and had the brake peddle close to the floor while the wife was pumping away (oooerr) I've replaced the brake like switch. I've gone back and check the wiring I've also checked all the under bonnet fuses using a multi-meter.

Anybody got any ideas on what I've ballsed up???
  
Post #20576521st Jun 2019 8:20 pm
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Dazz360
 


Member Since: 03 Sep 2016
Location: West Mids Walsall
Posts: 871

United Kingdom 2005 Discovery 3 TDV6 HSE Auto Bonatti GreyDiscovery 3

Silly but did you hook the level sensor back on
 Metal auto sump & fluid change (3 hrs)
LR door puddle projectors (10 mins)
Tinted Bonnet wind deflector (10 mins)
All Intercooler pipes and Tbolts (2hrs)
3 injectors replaced so far (30mins)
Sunroof drain pipes both sides 2.5 hrs)
Rear discs, shoes,pads,callipers,flexi hoses, rigid brake line, n/s upper hub carrier bush and rear n/s upper arm (13hrs over 2 days) 
 
Post #20576531st Jun 2019 8:39 pm
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doz
 


Member Since: 15 Jun 2014
Location: Southampton
Posts: 436

United Kingdom 2013 Discovery 3 TDV6 SE Manual Cairns BlueDiscovery 3

Unfortunately yes. Crying or Very sad
  
Post #20576571st Jun 2019 8:55 pm
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Dazz360
 


Member Since: 03 Sep 2016
Location: West Mids Walsall
Posts: 871

United Kingdom 2005 Discovery 3 TDV6 HSE Auto Bonatti GreyDiscovery 3

Are you able to check live values of the suspension, have you checked you haven’t squashed and wires near the upper mounts
 Metal auto sump & fluid change (3 hrs)
LR door puddle projectors (10 mins)
Tinted Bonnet wind deflector (10 mins)
All Intercooler pipes and Tbolts (2hrs)
3 injectors replaced so far (30mins)
Sunroof drain pipes both sides 2.5 hrs)
Rear discs, shoes,pads,callipers,flexi hoses, rigid brake line, n/s upper hub carrier bush and rear n/s upper arm (13hrs over 2 days) 


Last edited by Dazz360 on 1st Jun 2019 9:19 pm. Edited 1 time in total 
Post #20576641st Jun 2019 9:18 pm
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Narpy
 


Member Since: 18 Jul 2011
Location: Stockport
Posts: 7830

2005 Discovery 3 TDV6 S Manual Cairns BlueDiscovery 3

You know you need a 4 wheel alignment?
 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. 
 
Post #20576651st Jun 2019 9:19 pm
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Dazz360
 


Member Since: 03 Sep 2016
Location: West Mids Walsall
Posts: 871

United Kingdom 2005 Discovery 3 TDV6 HSE Auto Bonatti GreyDiscovery 3

I never had faults throw up though when I did mine understand alignment though
 Metal auto sump & fluid change (3 hrs)
LR door puddle projectors (10 mins)
Tinted Bonnet wind deflector (10 mins)
All Intercooler pipes and Tbolts (2hrs)
3 injectors replaced so far (30mins)
Sunroof drain pipes both sides 2.5 hrs)
Rear discs, shoes,pads,callipers,flexi hoses, rigid brake line, n/s upper hub carrier bush and rear n/s upper arm (13hrs over 2 days) 
 
Post #20576661st Jun 2019 9:20 pm
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doz
 


Member Since: 15 Jun 2014
Location: Southampton
Posts: 436

United Kingdom 2013 Discovery 3 TDV6 SE Manual Cairns BlueDiscovery 3

I can't see how the alignment would cause this issue. It is on the list to be done but until I can get it's bum off the ground it ain't going no where.

Did look at live values for the suspension. I do have a discrepancy of 10 on the rear and obviously all readings are negative due to it being in the weeds at the moment
  
Post #20576701st Jun 2019 9:35 pm
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gstuart
 


Member Since: 21 Oct 2016
Location: kent
Posts: 13576

United Kingdom 2005 Discovery 3 TDV6 Base 7 Seat Auto Java BlackDiscovery 3

Hi

Plus 1 what narpy has said, it will cause mayhem without getting the alignment done , needs doing when the rear upper and front lower wishbones are done

Also if u unplugged a height sensor with the battery still connected I believe u have to recalibrate the height sensors

But assume u disconnected ur battery before starting

Steering wheel angle also needs to be reset but that can be done when the 4 x wheel alignment is done

Know the feeling of trying to get the old bolts out, been there done that Laughing
   
Post #20576841st Jun 2019 11:44 pm
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doz
 


Member Since: 15 Jun 2014
Location: Southampton
Posts: 436

United Kingdom 2013 Discovery 3 TDV6 SE Manual Cairns BlueDiscovery 3

Using the Nanocom if I try to calibrate the air system it fails every time. So I can't do that. How does the rear wheel alignment cause issues?I'm getting confused between the electrikery and good old fashion nuts and bolts. Anyway there's no way the cars m9ving as is. She's on the pump stops on all 4 corners I tried moving it on the drive. It's not very pleasant to say the least Shocked
  
Post #20576852nd Jun 2019 12:48 am
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PROFSR G
 


Member Since: 06 Mar 2017
Location: Lost
Posts: 4580

Ukraine 2009 Discovery 3 TDV6 Commercial XS Auto Stornoway GreyDiscovery 3

If you disconnected a height sensor you will likely need some level of recalibration. That said, it does seem odd you're stuck on the blocks!

I'm not familiar with Namcom, but if you used it to depressurise the suspension, is there also an option in Namcom to "re enable" the system again?

Also, is it possible you damaged the very thin loom wires to one of the sensors?
They are very light and will not take easily to being pushed around!

One thing is probably certain, if it was OK before you began the work and is not OK now. Then it is likely something you did whilst doing the repair that has gone wrong.

Go back over your work again and find the problem, if a wire is damaged it might test your patience but you will get there. Start with the simple things and work upwards from there.
 yµ (idµ - eAµ) ψ=mψ

 
 
Post #20576872nd Jun 2019 1:38 am
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lynalldiscovery
 


Member Since: 22 Dec 2009
Location: Maidstone
Posts: 7274

United Kingdom 2006 Discovery 3 TDV6 Metropolis LE Auto Bonatti GreyDiscovery 3

Can you by accident refit the level arm but have the sensor arm 180 degrees out? seen it on trucks many a time.
  
Post #20576882nd Jun 2019 3:03 am
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gstuart
 


Member Since: 21 Oct 2016
Location: kent
Posts: 13576

United Kingdom 2005 Discovery 3 TDV6 Base 7 Seat Auto Java BlackDiscovery 3

doz wrote:
I can't see how the alignment would cause this issue. It is on the list to be done but until I can get it's bum off the ground it ain't going no where.

Did look at live values for the suspension. I do have a discrepancy of 10 on the rear and obviously all readings are negative due to it being in the weeds at the moment


Hi

May i ask, did u disconnect the battery before doing any work plse

Have u tried , disconnecting the battery again, then pulling the height sensor connectors apart and ensuring the pins are ok

On the passenger side there is a large connector block, have u touched that by accident when u done the upper arm

Have u checked ur fuses under the bonnet to ensure the basics have been checked

Alas we’ve all been there in feeling like ur pulling ur hair out

At least there’s plenty very knowledgable members here to help walk u through it step by step
   
Post #20576982nd Jun 2019 5:53 am
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gstuart
 


Member Since: 21 Oct 2016
Location: kent
Posts: 13576

United Kingdom 2005 Discovery 3 TDV6 Base 7 Seat Auto Java BlackDiscovery 3

PROFSR G wrote:
If you disconnected a height sensor you will likely need some level of recalibration. That said, it does seem odd you're stuck on the blocks!

I'm not familiar with Namcom, but if you used it to depressurise the suspension, is there also an option in Namcom to "re enable" the system again?

Also, is it possible you damaged the very thin loom wires to one of the sensors?
They are very light and will not take easily to being pushed around!

One thing is probably certain, if it was OK before you began the work and is not OK now. Then it is likely something you did whilst doing the repair that has gone wrong.

Go back over your work again and find the problem, if a wire is damaged it might test your patience but you will get there. Start with the simple things and work upwards from there.


Hi buddy

Hope life is treating u well

Wonder if there’s a broken wire in the large passenger side connector block that sits near the rear upper wishbone ??

As u also say, start with the simple bits first and go from there Thumbs Up
   
Post #20576992nd Jun 2019 5:56 am
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gstuart
 


Member Since: 21 Oct 2016
Location: kent
Posts: 13576

United Kingdom 2005 Discovery 3 TDV6 Base 7 Seat Auto Java BlackDiscovery 3

Just a thought

After de pressuring the suspension did u re activate it

Have u got lights on the height lever on the centre console plse

Thks
   
Post #20577002nd Jun 2019 5:59 am
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gstuart
 


Member Since: 21 Oct 2016
Location: kent
Posts: 13576

United Kingdom 2005 Discovery 3 TDV6 Base 7 Seat Auto Java BlackDiscovery 3

Nanocom users manual

https://www.nanocom-diagnostics.com/downlo...age-manual


Extract

Start EAS Enable and End EAS Enable: The EAS enable is a calibration mode that allows the ECU to fully accept changes in calibration and settings. It is advisable, although not necessary, that before performing any changes to the EAS, that the “Start EAS enable mode” is activated and then subsequently ended after any calibrations or changes in EAS settings. Ending the EAS enable will return the vehicle to “normal” mode. The second advisable use for the “End EAS enable mode” is after flashing or editing the EAS, or any other related ECU that works in direct conjunction with the air suspension, such as the Transfer Case Control Module, that this function is used to return the air suspension back to “normal” mode.


“”””””” The second advisable use for the “End EAS enable mode” is after flashing or editing the EAS, or any other related ECU that works in direct conjunction with the air suspension, such as the Transfer Case Control Module, that this function is used to return the air suspension back to “normal” mode.”””””




   
Post #20577022nd Jun 2019 6:02 am
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