battery not charging light on
#1
battery not charging light on
i got a 2002 jaguar xkr... i just change the alternator on it.. because the battery not charging light was on...i took the old alternator to get it tested and it tested good..the mechanic said if that not the problem.. check for a fusable link on it... the link good b stopping the alternator from charging the battery... have anyone had this problem.. if so help me come up with the solution.. n the location of this fusable link
#2
Alternator output is fed to the battery through a fuse (500A) in the "high power protection module" located in the trunk adjacent to the battery. Check Alt. output at this point.
The charging indicator is driven by a separate line from the alternator to the major instrument pack, so this is a possibility.
ie: false indication
If you want a wiring diag. for your car, send me a PM with your Email Address. I will send you one. It is a PDF
The charging indicator is driven by a separate line from the alternator to the major instrument pack, so this is a possibility.
ie: false indication
If you want a wiring diag. for your car, send me a PM with your Email Address. I will send you one. It is a PDF
#3
Join Date: May 2008
Location: Great Mills, MD
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Icyoung, open up the hood and trunk of your car. Connect a multimeter across the battery posts (engine turned off). Are you getting 12.6 VDC? If no, place the battery on a charger and get it up to 12.6 VDC. If yes, leaving the multimeter connected, start the car. Does the multimeter jump up to a voltage above 13.0 VDC? If yes, then it appears your problem is with your "battery" light on the dash, write me and I will give you some more checks to do. If no, move around to under the hood of your car and locate the alternator. Coming out of the alternator will be a small wire that is a white wire with a purple stripe on it. Place the red lead from the multimeter on this wire and the black multimeter lead to chassis ground. Are you getting above 12.0 VDC on this wire? If no, then check fuse #15 in the passenger side fuse box. If this fuse is good, then you have a wiring problem between the fuse box and the alternator. If you are getting 12 VDC on the white/purple wire, then verify that you are getting great than 13.0 VDC on the main terminal leaving the alternator. If you are getting more than 13.0 VDC on the main terminal, then you have a bad wire between the alternator and the starter. If you are not getting more than 13.0 VDC, you have a bad alternator.
It is possible that the wiring at the plug for the alternator is bad and can be giving you grief. So, before you replace the alternator, make sure to inspect the plug and verify no corrosion.
It is possible that the wiring at the plug for the alternator is bad and can be giving you grief. So, before you replace the alternator, make sure to inspect the plug and verify no corrosion.
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#4
#7
Join Date: Mar 2008
Location: Powell, Ohio U.S.A. 43065
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I'll tack this bit on for future reference to anyone tuning in:
PPR is a rebuilder who supplies quality rebuilt starters and alternators, and the distributor I buy from gives a lifetime warranty. I have not installed any rebuilts on a Jaguar model later than 1994: all the later original units are highly reliable, and I have been installing good used components as a result without concern or added expense.
Installing rebuilt starters and alternators for all 1994 and earlier models is not a rarety, and the PPR units have proven to be almost completely reliable...and replaced free on the rare occasions they were not. I presume that they cover later model Jaguar applications at this point, and that's the first source I'll check when the need arises.
PPR is a rebuilder who supplies quality rebuilt starters and alternators, and the distributor I buy from gives a lifetime warranty. I have not installed any rebuilts on a Jaguar model later than 1994: all the later original units are highly reliable, and I have been installing good used components as a result without concern or added expense.
Installing rebuilt starters and alternators for all 1994 and earlier models is not a rarety, and the PPR units have proven to be almost completely reliable...and replaced free on the rare occasions they were not. I presume that they cover later model Jaguar applications at this point, and that's the first source I'll check when the need arises.
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Johnken (05-26-2016)
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Once I had issues with the car not starting and having no power at all when hot, dead battery..... Long story short. After I described the instances and situations when the problem would occur, the senior tech at the dealer knew exactly what the problem was and traced it down to corrosion in the positive and negative battery wires.
Not saying this is your problem but new cables might be the cheapest thing to replace first.
Not saying this is your problem but new cables might be the cheapest thing to replace first.
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Thanks,
Mick
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Take it Jaguar, pay the hour diagnostic fee,they have special scanners that can pinpoint faults that we cannot with our eyes.Don't tell them what you have been doing and all that stuff, because that will confuse the technician and may cause him to start his diagnosis elsewhere, instead of from the beginning. Our years Jaguars have advanced charging systems that are controlled by modules that communicate from one to the other,compared to your average car.
I have seen this happen with bad seat heaters, the ground strap at the tranny being bad,the cables and fusible link in trunk being bad, (if your cable is hot -its shot and you need a new one),the gold nut in the driver side door area fuse box loosening itself up, and last but rare a failed connection due to corrosion or bad module.
I have seen this happen with bad seat heaters, the ground strap at the tranny being bad,the cables and fusible link in trunk being bad, (if your cable is hot -its shot and you need a new one),the gold nut in the driver side door area fuse box loosening itself up, and last but rare a failed connection due to corrosion or bad module.
Last edited by aode06; 03-19-2014 at 09:21 AM.
#19
o'reillys alternator NFG?
I got stranded on the weekend with a charging system failure in the MiddleOfNowhere, OH where nobody has ever seen a Jaguar. Given how I had to get home ASAP and there are no dealers in the area, I got an alternator from O'Reillys installed by the one and only shop in the area. Now the new alternator does charge the battery, but the Battery Light and the "Battery Not Charging" message are both ON.
Does anybody have any experience with O'Reilly's alternators? What are the chances of it not being compatible with Jaguar voltage sensing? Are they really as crap as lcyoung stated?
Thanks,
XKR 2002 Coupe
Does anybody have any experience with O'Reilly's alternators? What are the chances of it not being compatible with Jaguar voltage sensing? Are they really as crap as lcyoung stated?
Thanks,
XKR 2002 Coupe
#20
Can i have the wiring digram for XK8
My email Hairoman@izouco.com
My email Hairoman@izouco.com
Alternator output is fed to the battery through a fuse (500A) in the "high power protection module" located in the trunk adjacent to the battery. Check Alt. output at this point.
The charging indicator is driven by a separate line from the alternator to the major instrument pack, so this is a possibility.
ie: false indication
If you want a wiring diag. for your car, send me a PM with your Email Address. I will send you one. It is a PDF
The charging indicator is driven by a separate line from the alternator to the major instrument pack, so this is a possibility.
ie: false indication
If you want a wiring diag. for your car, send me a PM with your Email Address. I will send you one. It is a PDF