Is anyone local to this guy that knows how to use an oscilloscope ?, this would be the best way of testing voltage drop to the head lights using a low amps clamp connected to the scope, this way it can be recorded and sent to LR, also check the alternator output with it.
Thanks, you will see I live in Rotherham, but I work in Wakefield very near to M1 J39 if anybody is local to there as an alternative. Regards, DavidDiscovery 4 XS
MY 12
Nara Bronze
Towing Elddis Odyssey 656
4th Mar 2015 9:01 pm
Dudleydisco
Member Since: 20 Jun 2014
Location: York
Posts: 853
Just out of interest, is the IID Tool capable of logging voltage as well as RPM? That way you could get a graph showing alternator output vs RPM.D4 MY14 XXV - RLD/IID BT
D4 MY13 HSE Lux - RLD/IID BT
P38 RR - Sad parting
110 - Even sadder parting
S3 88" - Still going strong after 23 years of ownership
4th Mar 2015 9:17 pm
Robbie
Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
Posts: 17932
Yes it can graph and log any live value together with any other(s).
Land Rover - Turning Drivers into Mechanics Since 1948
Member Since: 20 Jun 2014
Location: York
Posts: 853
Cheers Robbie, thought so. Could be a good way to investigate Dave's problem.D4 MY14 XXV - RLD/IID BT
D4 MY13 HSE Lux - RLD/IID BT
P38 RR - Sad parting
110 - Even sadder parting
S3 88" - Still going strong after 23 years of ownership
4th Mar 2015 9:26 pm
Robbie
Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
Posts: 17932
Voltage, amperage, temp, RPM and ECU control signals are all relevant here.
Land Rover - Turning Drivers into Mechanics Since 1948
I thought I would just update everybody on this post. Monday after waiting 3 weeks, the new alternator was fitted. The engineer took the vehicle home to test after dark. And I know you are all wondering if it solved the issue...... well, no it did not so they are back consulting with LR. So in total its been with the garage on 4 different occasions and for a total of 15 days. I can't understand why with there knowledge, LR backup and the computers why they can't diagnose the reason for the fault.
I will update again once I know more.Discovery 4 XS
MY 12
Nara Bronze
Towing Elddis Odyssey 656
31st Mar 2015 8:11 pm
highlands
Member Since: 10 Jan 2010
Location: NW Highlands
Posts: 5107
Sounds like it could be an earthing fault.
The X350 XJ jags had an earthing issue (connection to the bumper beam IIRC) that had the xenon lights flickering.Black 05 TDV6 HSE Auto
Grey 05 TDV6 HSE Auto (Gone)
54 TDV6 SE Man (killed by me )
LR dealer phoned me today. 2 Senior technicians from LR been to garage today to inspect. Whilst they saw the fault, they said that for this year of car and build its just what it does.They tried a RR Sport from the forecourt of similar age and say it does the same to demonstrate the point.
Is this plausible or are they b**l Sh****g?
They have asked that a battery monitor be fitted to the car so garage having it overnight to get that fitted.
Should I take it further and if so who with?
Has anybody else had a similar issue. Car is D4 MY12 , XS with a few extras.
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