Battery drain
#1
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Hello my friends!, I own a 1994 XJ40, I've got a battery drain which is connected with the Fuse # B5 on the RH kick panel and is tagged "PI Memory". I've read that it is the memory for the Injectors. I've only used a ck. light to detect that removing this allows the # 194 bulb to dim down to almost nothing. I've driven it around the block with a noticeable hesitation. I've not determined how many amps it takes away. Today's Sunday and the Bible leaves me to believe that " my Ox isn't the ditch ". So I'll watch this Forum for some HELP! What in this B5 circuit could be bad enough to cause this drain. My wife claims I talk too much...???
#2
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1951sms (01-14-2013)
#3
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I just came in from another test. This time it was done at the fuse B5 again. With fuse pulled my Digital Meter read 9.64 Volts after allowing the interior lights to time out. The actual reading on battery was 12.42 V.
1951sms
1951sms
Last edited by 1951sms; 01-15-2013 at 10:21 AM. Reason: Confussion on my part
#4
#5
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Ok, I've pulled every fuse with a Ck. light connected to the disconnected neg- battery cable and post.
After all fuses had been removed one at a time, the only fuse removed and still the light stayed on was the B5.
I've had so many trying to help asking just what amp drain showed on my VOM it's crazy.
One fussed that my return was that it was 73 mili amp draw saying I'm confusing him and everyone else with the #'s ???
The facts are that whatever numerical drain shows it drains my battery down with or without the fuse pulled.
I asked mainly to find out what was on the circuit that could be pinpointed to check.
Sometimes there are more than 1 thing on that circuit.
I did get the answer that it was the Petroleum Injector memory and that is where the info stopped.
Everything else was wanting to know a #.
Great for someone that's taking notes but how does it travel, through what direction and such.
I have 3 meters, they each have certain things that each are best suited for, but the only one that would read mili amps died Tuesday. or that it goes above 500 Mili ??!!
Anyway I'm going to Lowes to use my Christmas gift card to get a better meter for amps.
I have used the method of a 194 bulb in a 70's side marker light with a 15 foot section of #16 gauge wire for 35 or so years and not needed anything else to read a problem like this.
Too much coffee this morning. :-}
After all fuses had been removed one at a time, the only fuse removed and still the light stayed on was the B5.
I've had so many trying to help asking just what amp drain showed on my VOM it's crazy.
One fussed that my return was that it was 73 mili amp draw saying I'm confusing him and everyone else with the #'s ???
The facts are that whatever numerical drain shows it drains my battery down with or without the fuse pulled.
I asked mainly to find out what was on the circuit that could be pinpointed to check.
Sometimes there are more than 1 thing on that circuit.
I did get the answer that it was the Petroleum Injector memory and that is where the info stopped.
Everything else was wanting to know a #.
Great for someone that's taking notes but how does it travel, through what direction and such.
I have 3 meters, they each have certain things that each are best suited for, but the only one that would read mili amps died Tuesday. or that it goes above 500 Mili ??!!
Anyway I'm going to Lowes to use my Christmas gift card to get a better meter for amps.
I have used the method of a 194 bulb in a 70's side marker light with a 15 foot section of #16 gauge wire for 35 or so years and not needed anything else to read a problem like this.
Too much coffee this morning. :-}
Last edited by steveinfrance; 01-17-2013 at 08:38 AM. Reason: Line breaks
#6
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I've put some line breaks in your post - definitely too much coffee.
We do need the current draw - you will need a meter with a 10 or 20 Amp range - note you usually have to put the leads into a different socket on the meter to get the Amps range.
If you haven't already download the electrical diagram from the How-Tos
https://www.jaguarforums.com/forum/x...ams-faq-34886/
We do need the current draw - you will need a meter with a 10 or 20 Amp range - note you usually have to put the leads into a different socket on the meter to get the Amps range.
If you haven't already download the electrical diagram from the How-Tos
https://www.jaguarforums.com/forum/x...ams-faq-34886/
Last edited by steveinfrance; 01-17-2013 at 08:40 AM.
#7
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#8
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Now that you have a correct meter, follow these instructions.
Disconnect the negative lead on the battery. Clamp the red lead from the meter to the negative battery lead. Clamp the negative meter lead to the negative terminal on the battery. Be sure your meter is in amp mode and the doors are shut and no interior lights are on. What does your meter say now? If it's 2. something and above you need to now disconnect the meter, go open the doors, leave them open until the lights go out. Reconnect the meter as posted above, hopefully your leads are long enough to put the meter on the windshield while you pull every fuse one by one until that amp draw shows .5 or under. Is that how you got your 2.32 reading?
Disconnect the negative lead on the battery. Clamp the red lead from the meter to the negative battery lead. Clamp the negative meter lead to the negative terminal on the battery. Be sure your meter is in amp mode and the doors are shut and no interior lights are on. What does your meter say now? If it's 2. something and above you need to now disconnect the meter, go open the doors, leave them open until the lights go out. Reconnect the meter as posted above, hopefully your leads are long enough to put the meter on the windshield while you pull every fuse one by one until that amp draw shows .5 or under. Is that how you got your 2.32 reading?
#9
#12
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Thanks my friend. I've had a good bit of help with this on-line. My B5 on my 1994 XJ6 is on the RH kick panel. It's is taged "PI Memory". I was told that it was Petrol injection memory. I've traced it thru my Hanes book. A 1991 schematic shows it to be the rr window. But anything is possible. I'll ck. it too.
#13
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1951sms (01-20-2013)
#14
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Thanks my friend. I've had a good bit of help with this on-line. My B5 on my 1994 XJ6 is on the RH kick panel. It's is taged "PI Memory". I was told that it was Petrol injection memory. I've traced it thru my Hanes book. A 1991 schematic shows it to be the rr window. But anything is possible. I'll ck. it too.
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1951sms (01-20-2013)
#15
#16
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1951sms,
Make sure your pic doesn't exceed the limits, that's usually the problem when uploading. The file size limits are visible in the upload window that opens when you try to upload a pic. Keep it a low pixel picture, convert it in MS Paint if needed, then try it. I think you need to keep the pic 620x280. If you have your camera set on high resolution (high pixel count), it will need to be reduced.
Make sure your pic doesn't exceed the limits, that's usually the problem when uploading. The file size limits are visible in the upload window that opens when you try to upload a pic. Keep it a low pixel picture, convert it in MS Paint if needed, then try it. I think you need to keep the pic 620x280. If you have your camera set on high resolution (high pixel count), it will need to be reduced.
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1951sms (01-20-2013)
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