Fuse Question - Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > TJ Jeep Wrangler Forum > TJ General Discussion Forum

Join Wrangler Forum Today



Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 11-26-2011, 12:55 PM   #1
Jeeper
 
daynestj's Avatar
 
Join Date: Jul 2011
Location: Mooresville, NC
Posts: 55
daynestj is on a distinguished road
Fuse Question

2001 TJ - 4.0
#7 fuse in block behind glove compartment. It is for backup lights and ABS. 10 amp fuse is whats called for and every one you put in will blow when you turn the ignition on. Any ideas????
daynestj is offline   Quote
Old 11-26-2011, 01:10 PM   #2
Jeeper

WF Supporting Member
 
jeepjones's Avatar
 
Join Date: Jul 2010
Location: Canada, Eh?
Posts: 1,892
jeepjones is on a distinguished road
According to the FSM for your TJ the following is a list of circuits energized by the #7 fuse circuit:
1. Antilock Brake Controller,Antilock Brake Relay (in the PDC)
2. Rear window defogger relay (in the PDC)
3. Park/neutral position switch
4. Back up lamp switch

I'd start checking the related circuits that way you will be more than likely be able to narrow down the search for the cause of the short circuit.

*WHATEVER YOU DO DON"T PUT A HIGHER RATED FUSE IN THE BLOCK, THIS COULD START A VEHICLE FIRE*

__________________
jeepjones is offline   Quote
Old 11-26-2011, 01:35 PM   #3
Knows a couple things...

WF Supporting Member
 
Jerry Bransford's Avatar
 
Join Date: Nov 2005
Location: Escondido, Calif.
Posts: 42,275
Jerry Bransford is on a distinguished road
The way I troubleshoot circuits like that is is to disconnect all the circuits I can get to and seeing if the fuse still blows. That means pulling the plug to the circuits I can get to or removing the bulbs in other circuits controlled by the fuse that is blowing. Then reconnect the circuits or replace removed bulbs until the fuse starts blowing again. That is a quick way to isolate the problem down to the one that is blowing the fuse. I had one like that recently that was blowing a fuse in my Toyota and it turned out to be a bad bulb socket.
__________________
Gone wheeling Friday through Sunday.

When you have a choice, buy American.
Jerry Bransford is offline   Quote
 
Old 11-26-2011, 03:09 PM   #4
Jeeper
 
daynestj's Avatar
 
Join Date: Jul 2011
Location: Mooresville, NC
Posts: 55
daynestj is on a distinguished road
Fuse Question

OK, according to the diagram on the PDC lid the ABS Relay is not there and I can't find one labeled for the rear window defogger. I guess I'll move on to the switches and see if I can locate them.
daynestj is offline   Quote
Old 11-26-2011, 05:25 PM   #5
Knows a couple things...

WF Supporting Member
 
Jerry Bransford's Avatar
 
Join Date: Nov 2005
Location: Escondido, Calif.
Posts: 42,275
Jerry Bransford is on a distinguished road
Does your TJ have ABS and/or a rear window defogger?
__________________
Gone wheeling Friday through Sunday.

When you have a choice, buy American.
Jerry Bransford is offline   Quote
Old 11-26-2011, 05:52 PM   #6
Jeeper
 
daynestj's Avatar
 
Join Date: Jul 2011
Location: Mooresville, NC
Posts: 55
daynestj is on a distinguished road
Fuse Question

Well I knew it didn't currently have a rear defroster (always a soft top) but I erroneously ass-umed it would have abs systems. After checking my build sheet I see I ass-umed wrong.

Will I most likely have trouble getting to and disconnecting the switches to test them? Sorry for all the trouble but I am learning.
daynestj is offline   Quote
Old 11-26-2011, 06:07 PM   #7
Knows a couple things...

WF Supporting Member
 
Jerry Bransford's Avatar
 
Join Date: Nov 2005
Location: Escondido, Calif.
Posts: 42,275
Jerry Bransford is on a distinguished road
At this point, since you just confirmed you don't have ABS or a rear window defogger, I'd be looking at the backup lights and backup light bulb sockets themselves. Pull the backup lights out and see if the fuse still blows. That may help isolate the problem to the backup lights themselves or elsewhere.
__________________
Gone wheeling Friday through Sunday.

When you have a choice, buy American.
Jerry Bransford is offline   Quote
Old 11-26-2011, 07:10 PM   #8
Jeeper
 
daynestj's Avatar
 
Join Date: Jul 2011
Location: Mooresville, NC
Posts: 55
daynestj is on a distinguished road
It's amazing what a little lack of noise and darkness can do for testing. I took both backup bulbs out and the fuse still blew. This time though it's pitch dark outside and I actually shut all the doors on the jeep. You can now hear a slight pop and see a quick flash as soon as you put it in reverse. I tried it with bulbs out and bulbs in to make sure. Same pop and same flash as soon as it hits reverse.

daynestj is offline   Quote
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Starting troubles mother one YJ Tech Forum 11 10-22-2015 05:46 AM
TJ Fuse Blowing! Jeep_VT TJ General Discussion Forum 1 04-05-2011 05:35 PM
Fuse Block to Blower Motor in Question 1roadking YJ Tech Forum 0 08-31-2010 12:08 AM
A Quick Fuse Box Question BLACKTOOTHGRIN TJ Tech Forum 7 02-12-2010 12:55 AM
Fuse question.....please help 97wrangler TJ Tech Forum 9 12-09-2007 10:58 PM



Download our Mobile App

» Featured Product

All times are GMT -5. The time now is 10:01 PM.


User Alert System provided by Advanced User Tagging v3.1.0 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.

Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC
« Back

Enter your email address:

Delivered by FeedBurner