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j.obfuscation
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| Posted: Jan 15 2012 at 11:24pm | IP Logged
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Oh yeah, NalleyJ83: if your clusters good and your charge
lights on (meaning you have continuity from your cluster
to your voltage regulator) break out a wiring diagram and
check the continuity of the circuit from your alternator
to your battery.
You can get a diagram in any off the shelf manual. There's
only a few wires and a couple fuses.
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frontierguy
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| Posted: Jan 16 2012 at 7:11pm | IP Logged
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j.obfuscation, Exactly my point about "ISOLATION" and
sticking to the basics of trouble shooting. We don't have
time to perform test out of the circle, stick to the basic
test, make a conclusion and move on. By the way, your'e
welcome!!!!
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Traded 08 Frontier for 16 Frontier SV CC Long box, quite an upgrade. I do miss the 6 speed and Dynomax ex.
Nissan Technician 25 + years
2011 John Deere X720SE
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kcidmil
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HI! My name is Ben and I have Car ADD.
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| Posted: Jan 17 2012 at 8:39pm | IP Logged
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j.obfuscation wrote:
if you put a meter across the
positive (charging) lead of the Alternator and the
ground, you would see at least 14V DC regardless of a
short in the vehicles wiring.
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Actually most alternators will only put out voltage if
the field wiring is energized. So no power to the field
terminal, no power output. So the .5v you're seeing is
probably residual in the air, probably from the ignition
system.
And while you're getting continuity through the rest of
the wiring, doesn't mean any voltage is coming down it to
energize the field winding. If you had checked for
voltage at the plug in you should have had battery
voltage at one of the terminals with the ignition on.
BTW, usually it's best to listen to the "master mechanic"
While I don't put much stock in Mechanic A, Mechanic B
ASE certs, (which I hold both ASE Heavy Truck Master
Tech, and some car+truck certs) 25+ years floor
experience lets you see a lot of stuff.
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mrwhizard
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| Posted: Jan 29 2012 at 8:03am | IP Logged
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Hello;
I repair the instrument clusters on the 98-01 Frontiers. Besides the charge indicator light on the cluster there is a 100 ohm resistor that is in parallel with the light. This should provide the necessary voltage to the alternator to activate it. I tried to paste a picture of the charging circuit here but couldn't do it. I will try and explain the circuit.
The charge circuit starts at fuse 11 (10A) which is hot in on or start. This goes to pin 29 of the cluster on a white/black wire. This is actually the ignition wire as well so if the cluster lights up and works power should be OK here. The ignition power goes through the parallel combination of the charge bulb and the 100 ohm resistor and out pin 27 of the cluster on a yellow/black wire and it shows this going to pin 3 of the alternator (yellow/black wire). During on or start conditions there should be an active voltage on the yellow/black wire. (I'm not sure how high the voltage should be).
check the cluster:
With the cluster removed check the back of it (pin 27 is on the left connector bottom right side. right below it is the abs bulb(ABS is imprinted on the circuit board). Just to the left of the ABS is the 100 ohm resistor. Check this resistor that it is 100 ohms. Just to the right of the ABS is the "charge" bulb.
Sometimes the foil where the connectors get plugged into gets messed up so check this as well.
Alternator will not charge battery with cluster out . Since I repair the clusters some folks try and drive their vehicle with the cluster out and the battery dies in an hour. This is how I know the situation you are having.
For more info on instrument cluster repair of the 1998-2001 Frontiers visit Mr. Whizard Technical Services
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ibanezgus
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| Posted: May 07 2012 at 12:43pm | IP Logged
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my battery light comes on
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lakota
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| Posted: May 07 2012 at 3:42pm | IP Logged
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ibanezgus wrote:
| my battery light comes on |
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Welcome to the group!
First remove, clean and replace all Battery and ground connections.
A local auto parts store will probably check the battery for you. If this doesn't fix it start a new thread about the problem and state what truck it is...
Have a cool one.. Don S..
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gowirelessmwebb
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| Posted: Dec 16 2013 at 7:55pm | IP Logged
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hello i'm a new member i seem to also have a charging issue on a 2000 frontier i have replaced the battery and 2 alt's now but after reading post here i just checked the battery lite with the egnition on and there is no battery lite to be seen . i do get up to 13.6 volts but soon as i put it under load the voltage begins droping . down down down . I don't have the time to pull the dash apart rite now and hope to get two days by charging it over nite on a 2amp slow charge i only go 6 miles each way .
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lakota
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| Posted: Dec 16 2013 at 10:21pm | IP Logged
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..
Welcome to the group!
If the slow charge does not work post a new topic with all
the info about it.
It might be one of several ground wires not conducting.
Good luck..
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PLEASE >>> A SIG similar to mine can be VERY HELPFUL to all the members!
'99 4x4 3.3 Frontier Se KC Auto, 48,000 miles
'76 4x4 401 Wagoneer QT
'04 FWD 1.8 Sentra '08 FWD 2.4 Camry LE
Fort Worth
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Nissan Frontier Forums : Problems / Technical
Topic: Good Alternator not charging ’98
