supra has no electrical power

cre · 06-26-2012, 04:02 PM

Zero electrical power? Not even to the dome lights? And the battery is charged? As covered in this thread, bad battery wires, primary grounds or fusible link.

TSchulz · 06-26-2012, 04:32 PM

Correct Cre, no power at all. Even with jumpers on it I have nothing.
the battery wires, and the grounds look great so I guess I'll check the link.

TSchulz · 06-28-2012, 01:31 AM

Replaced the fusible link today, still no power anywhere....anyone know what I should check next?

cre · 06-28-2012, 05:47 AM

I know how to proceed but first you need to get a multimeter and look up a couple tutorials on how to use them to test certain things. The first things we'll be testing are voltage and voltage drop.

TSchulz · 06-28-2012, 03:10 PM

I know how to use a multimeter, I just need to know where to look next. The problem like I said before is that I dont even get power when the car is hooked up to jumper cables. So Im not quite sure what voltage drop would have to do with it. I do know that on the battery I have 12v. That is as far as I have looked though. Cre you saying I need to go through and check every fuse as the next step?

cre · 06-28-2012, 04:03 PM

Sorry, I see a lot of posts like this and guess I got confused. I thought it was you who said they had no multimeter (which often accompanies a lack of familiarity with its usage).

Anyway, no, you don't need to start testing every fuse. Read through this and find the point where you are losing power. If you've really lost power on every circuit it's either the battery, battery cable, fusible link or ground.

http://www.cygnusx1.net/Supra/Librar...px?S=Main&P=36

EDIT: Note that there is also a fusible link inline in the battery cable. If you have no power at the ALT FL in the engine bay fuse box this is a likely reason. I honestly don't think I've ever heard of it going on anyone though and I've never looked at it to see just how robust it is.

TSchulz · 07-06-2012, 01:34 AM

Found that I'm not getting power at the fuse link in the relay/fuse box under the hood. I am getting power at the starter but I had some questions about that. I for sure am getting power to the starter, but I cant find the power out of it.(although part of that could be that I am having a hard time getting to the starter since I dont have a jack yet.) I also am concerned about the wires that I see coming out of it. Any feed back would be good.

Ranma · 07-12-2012, 07:28 PM

Quote:

Originally Posted by TSchulz

I know how to use a multimeter, I just need to know where to look next. The problem like I said before is that I dont even get power when the car is hooked up to jumper cables. So Im not quite sure what voltage drop would have to do with it. I do know that on the battery I have 12v. That is as far as I have looked though. Cre you saying I need to go through and check every fuse as the next step?

Taps fingers lightly, where do you have the jump cables attached? If you say the battery WRONG! Attach the positive to the positive on battery and the negative jumper wire to the frame of the car. something should turn on! if not start from the battery and go toward the cars circuits.

Actually I recommend you bring it down to a qualified mechanic. This thread has gotten pathetic. This is not brain surgery!Take a class in basic electrical troubleshooting.

06-26-2012, 04:02 PM	#1
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	Zero electrical power? Not even to the dome lights? And the battery is charged? As covered in this thread, bad battery wires, primary grounds or fusible link. __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar --->

06-28-2012, 05:47 AM	#4
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	I know how to proceed but first you need to get a multimeter and look up a couple tutorials on how to use them to test certain things. The first things we'll be testing are voltage and voltage drop. __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar --->

06-28-2012, 04:03 PM	#6
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	Sorry, I see a lot of posts like this and guess I got confused. I thought it was you who said they had no multimeter (which often accompanies a lack of familiarity with its usage). Anyway, no, you don't need to start testing every fuse. Read through this and find the point where you are losing power. If you've really lost power on every circuit it's either the battery, battery cable, fusible link or ground. http://www.cygnusx1.net/Supra/Librar...px?S=Main&P=36 EDIT: Note that there is also a fusible link inline in the battery cable. If you have no power at the ALT FL in the engine bay fuse box this is a likely reason. I honestly don't think I've ever heard of it going on anyone though and I've never looked at it to see just how robust it is. __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar ---> Last edited by cre; 06-28-2012 at 04:18 PM.

07-06-2012, 01:34 AM	#7
TSchulz Stock Join Date: Jan 2012 Location: Tacoma,WA Posts: 17	Found that I'm not getting power at the fuse link in the relay/fuse box under the hood. I am getting power at the starter but I had some questions about that. I for sure am getting power to the starter, but I cant find the power out of it.(although part of that could be that I am having a hard time getting to the starter since I dont have a jack yet.) I also am concerned about the wires that I see coming out of it. Any feed back would be good. Attached Thumbnails

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06-26-2012, 04:32 PM	#2
TSchulz Stock Join Date: Jan 2012 Location: Tacoma,WA Posts: 17	Correct Cre, no power at all. Even with jumpers on it I have nothing. the battery wires, and the grounds look great so I guess I'll check the link.

06-28-2012, 01:31 AM	#3
TSchulz Stock Join Date: Jan 2012 Location: Tacoma,WA Posts: 17	Replaced the fusible link today, still no power anywhere....anyone know what I should check next?

06-28-2012, 03:10 PM	#5
TSchulz Stock Join Date: Jan 2012 Location: Tacoma,WA Posts: 17	I know how to use a multimeter, I just need to know where to look next. The problem like I said before is that I dont even get power when the car is hooked up to jumper cables. So Im not quite sure what voltage drop would have to do with it. I do know that on the battery I have 12v. That is as far as I have looked though. Cre you saying I need to go through and check every fuse as the next step?