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Discussion Starter #1
Hi guys as the title suggusts the subtank,Handbrake,Battery lights are all lit up as the car is driving along.(2003 3L GU ST). The main battery died and has since been replaced but the lights still remain. My other issue is it seems to be in limp home mode as it's got not power at all.
My questions are.
Is the alternator on the way out?
Is it an earthing problem?
Should i disconnect the batterries and reset the ECU?
Or is it in need of black magic?
Any solutions would be greatly welcomed
Cheers
 

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The Bear
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2,407 Posts
reset the ECU, then if persists consider replace alternator, or at least get it checked for charge rate and load output.

Thats what my crook alternator was flashing up, so I changed it out, issues gone away, no ecu to reset on the old tech 4.2 though, just keep keep truckin.......till the battery gets too flat and the pump solenoid slams shut. - hate that
 

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Discussion Starter #4
Thanks guys for the feedback. I'm currentently reseting the ECU. I did test the voltage at the battery while the truck was running and it measured 13.21 volts. Should it be around 14volts while running.
Cheers
 

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Thanks guys for the feedback. I'm currentently reseting the ECU. I did test the voltage at the battery while the truck was running and it measured 13.21 volts. Should it be around 14volts while running.
Cheers
Was that idling or fast running??
13.21 OK at idle
14-14.7 fast running is nice.
 

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Discussion Starter #7
It was running at idle. I guess a trip for new alternator is in store tomorrow morning :(.
Cheers for the help.
 

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mine has the exact problem.
my gauges in the dash go stupid while it is running too.
might check the alternator myself.
can anyone give me a quick run down on how to test please
much appreciated
 

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BORDERTREK 4X4 & FABRICATION
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mine has the exact problem.
my gauges in the dash go stupid while it is running too.
might check the alternator myself.
can anyone give me a quick run down on how to test please
much appreciated
Once the engines warmed up a bit rev it right up and the multimeter should read over 14 volts.
 

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nissan
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What Sudso said... and... if at idle the voltage is below about 13.8 then either there is a significant current load somewhere OR the Alternator/Regulator is dodgy.

Assuming a serviceable Battery with a reasonable state of charge the Alt should comfortably output high 13's at idle and low to mid 14's with a few revs.
 

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nissan patrol 2005
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Have the same problem here as well. Have a 2005 GU wagon diesel manual. Have had it at Nissan Dealerships they tell me all ok. Had it just recently at a auto elec found fault in alternator regulator/rectifier and a couple of bearings replaced and $500.00 later. problem went away for about 2 weeks and now has started agin. Lights only begin to blink when the engine is hot after about 10mins driving. Also have IBS Dual Battery system have been told their may be a problem there.????
 

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nissan patrol 2005
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I have been into a Battery Specialist, both batteries running fine and doing there job correctly and also replaced clamps on one of the batteries. Have also had an extra earth cable attached to the vehicle body. Lights had stopped for about 2 weeks but have again started. Help please.......
 

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Hi, I'm all pretty new to this and not much of an expert but I'll relay what happened to me over the last couple of months. I've got a 99 GU TI
First, dash lit up all over the place, car surged when indicators were on etc limped home (well, 100 metres from home) and got towed to my 4wd mechanic.
Diagnosed stuffed alternator, which was replaced. Deep cycle battery replaced as well (4 years old).
Didn't need to drive the patrol for a few weeks but decided to take it for a run down the Peninsula. Coming back, got almost home, everything flashed, then everything turned off, then the Patrol stopped. 2 1/2 hr wait for RACV showed flat battery. They got us started and it was right back to my mechanic.
With a bit of headscratching it was determined the bottom lead on the alternator was a loose fit. In consultation with the auto electrician who said good luck in getting a plug to fit the replacement alternator, the plug was sealed into place with silastic. Doesn't move
Haven't had a problem since.
Hope that helps
Cheers
Dave
 

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nissan patrol 2005
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Looks like problem is all fixed. After heaps of head scratching and jiggling wires and just checking each wire one at a time we have found a wire which was broken in one of the plugs which connects into the alternator . So far so good.
 

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Which Wire

Hi guys,

After 10 years of good times with the Patrol I decided to buy another car. I did this over the phone and no word of a lie as i got into the Patrol at the end of the day I noticed the Subtank, Handbrake ligth and Battery light all on .......... Never had an issue like this before. I am assuming the Alternator is at fault as the batteries are not charging (battery monitor in the cab). Which wire did you find loose? I know this was several years ago but i don't want to drop a lot of money on a car I am about to sell.

Cheers
 

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nissan
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:):) dig dig dig :):)

Looks like I'm having the same problem.... which was your dodgy wire ???
 

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nissan guiv patrol
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Had the same issue last year, alternator was the problem. Tried everything with it was still under warranty. The garage refused to replace it saying their insurance wouldn't cover it, 3 trips to them on a flat bed finally convinced them to replace it.
 
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