sr20det alternator not charging - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

vertsilvia93 · 11-18-2019, 02:33 PM

So I am stumped!!
Before creating this thread I have done 4 days of non stop researching. 2 days of checking every fuse and wire and I still cant figure it out.
The battery light in the dash doesn't turn on when u turn the key to on. I know that battery light is what triggers the alternator to start charging. Every fuse is good. Battery is relocated to the trunk. Battery is new, Alternator is new. I cant figure out how to fix it. Can I bypass that light on the dash?? How can I figure out what to check next???

jedi03 · 11-19-2019, 01:27 PM

um you have it backwards...light comes on when theres an issue with the charging system...do you have an owners manual?

vertsilvia93 · 11-19-2019, 02:08 PM

Quote:

Originally Posted by jedi03

um you have it backwards...light comes on when theres an issue with the charging system...do you have an owners manual?

it was my understanding the light should turn on when the key it turned to on and that is what triggers the battery to turn on.

the light should turn off after you turn the car on.

that light goes from the ignition on one end and the alternator on the other end. im stumped idk what or where to find the issue.

S14rebuild · 11-19-2019, 06:55 PM

7.5amp fuse feeds the cluster battery light, then goes to the alternator (white red) wire

Then a diffrent 7.5amp fuse feeds yellow wire to alternator. Both should have 12volts when running

Is the bulb any good?

Pull up the fsm and time for pin test

vertsilvia93 · 11-19-2019, 08:43 PM

Where is the 7.5 fuse located?
And or what number slot?

vertsilvia93 · 11-20-2019, 02:52 PM

anyone that can help please

K_never_broke_again · 11-25-2019, 07:28 AM

as s14rebuild said, get the fsm and check the wiring, it sounds like the gauge fuse. another thing you could do it check the voltage on the alternator plug, this is what the battery light eventually leads to. if it’s not getting voltage, your problem is somewhere along that line. here’s the fsm https://forums.nicoclub.com/240sx-fs...e-t311075.html

11-18-2019, 02:33 PM	#1
vertsilvia93 Join Date: Jan 2015 Location: Georgia Posts: 32 Trader Rating: (0) Feedback Score: 0 reviews	sr20det alternator not charging So I am stumped!! Before creating this thread I have done 4 days of non stop researching. 2 days of checking every fuse and wire and I still cant figure it out. The battery light in the dash doesn't turn on when u turn the key to on. I know that battery light is what triggers the alternator to start charging. Every fuse is good. Battery is relocated to the trunk. Battery is new, Alternator is new. I cant figure out how to fix it. Can I bypass that light on the dash?? How can I figure out what to check next???

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11-19-2019, 01:27 PM	#2
jedi03 Nissanaholic! Join Date: Jul 2008 Location: albuquerque Posts: 1,786 Trader Rating: (8) Feedback Score: 8 reviews	um you have it backwards...light comes on when theres an issue with the charging system...do you have an owners manual?

11-19-2019, 06:55 PM	#4
S14rebuild BANNED Join Date: May 2019 Location: Florida-FAIL Posts: 2,497 Trader Rating: (8) Feedback Score: 8 reviews	7.5amp fuse feeds the cluster battery light, then goes to the alternator (white red) wire Then a diffrent 7.5amp fuse feeds yellow wire to alternator. Both should have 12volts when running Is the bulb any good? Pull up the fsm and time for pin test

11-19-2019, 08:43 PM	#5
vertsilvia93 Join Date: Jan 2015 Location: Georgia Posts: 32 Trader Rating: (0) Feedback Score: 0 reviews	Where is the 7.5 fuse located? And or what number slot?

11-20-2019, 02:52 PM	#6
vertsilvia93 Join Date: Jan 2015 Location: Georgia Posts: 32 Trader Rating: (0) Feedback Score: 0 reviews	anyone that can help please

11-25-2019, 07:28 AM	#7
K_never_broke_again Leaky Injector Join Date: Nov 2018 Location: Maryland Posts: 50 Trader Rating: (0) Feedback Score: 0 reviews	as s14rebuild said, get the fsm and check the wiring, it sounds like the gauge fuse. another thing you could do it check the voltage on the alternator plug, this is what the battery light eventually leads to. if it’s not getting voltage, your problem is somewhere along that line. here’s the fsm https://forums.nicoclub.com/240sx-fs...e-t311075.html