Low voltage problem

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woodstock1964

Member
Posts
10
Hi guys,
Land Rover, Range Rover vogue 2005 3.0
having been chasing faults all over the vehicle
windscreen wipers
radio
dashboard indicator repeaters
brake lights stuck on
constant "P" light
I ran diagnostics and the only consistent fault is a auxiliary fuse error on the body control module, I checked all the fuses and they are all good I even took the entire fuse box out and checked for corrosion (yes I had the sunroof drain issue, now all cured)
all relays check out, so I started measuring voltages....
the dreaded fuse 41 is only measuring 4.1v !
I jumped a 12v to the switched power in on the radio and sure enough that sprung to life,
has anybody else come across this?
I am loathsome to just chuck another input to fuse 41 until I can find out why this (and a few other fuses) have this low voltage issue
any body got any ideas
on further investigation fuse 53 which is on the head of this line is showing 12v but everything south of the ignition switch is showing 4v
is this a swap out ignition switch?
 
Last edited:
Hi guys,
Land Rover, Range Rover vogue 2005 3.0
having been chasing faults all over the vehicle
windscreen wipers
radio
dashboard indicator repeaters
brake lights stuck on
constant "P" light
I ran diagnostics and the only consistent fault is a auxiliary fuse error on the body control module, I checked all the fuses and they are all good I even took the entire fuse box out and checked for corrosion (yes I had the sunroof drain issue, now all cured)
all relays check out, so I started measuring voltages....
the dreaded fuse 41 is only measuring 4.1v !
I jumped a 12v to the switched power in on the radio and sure enough that sprung to life,
has anybody else come across this?
I am loathsome to just chuck another input to fuse 41 until I can find out why this (and a few other fuses) have this low voltage issue
any body got any ideas
on further investigation fuse 53 which is on the head of this line is showing 12v but everything south of the ignition switch is showing 4v
is this a swap out ignition switch?
Duff ignition switch is common.
 
ignition barrel removed split and tested, pins 2 and 6 show perfect connection on both position 1 and position 2.....the search continues.
 
not sure if this covers your year but may help
 

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SUCCESS!!!
many thanks for your input, whilst the ignition switch was performing correctly my attention turned to the connector (many thanks to Mark Piercy) with the help of a torch I checked the connectors and they were quite corroded, small brass brush and managed to return them to copper colour and then finished with contact spray. checked and sure enough voltage to the offending set of fuses was restored. there was a few niggles with the contacts pushing themselves out of the connector block on reconnection but a small blunt object to the rear of the connector ensured they were all snapped in place..
ran diagnostics (icarsoft LR V2) and I now have a Range Rover in full working order with no faults
Many thanks to you all
 
I wish mine was just the sunroof drain leak, just received replacement passenger door electric window switch which I am going to fit tomorrow, if that doesn't solve my problem I will then put in a replacement regulator, if that doesn't work I am going to lock myself in a dark room!
 
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