User Tag List

Reply
 
Thread Tools Rate Thread Display Modes
Old 08-07-2020, 07:53 PM #1
WRfarmer WRfarmer is offline
Junior Member
 
Join Date: Oct 2014
Location: Wheat Ridge, CO
Posts: 20
Real Name: Mike
WRfarmer is on a distinguished road
WRfarmer WRfarmer is offline
Junior Member
 
Join Date: Oct 2014
Location: Wheat Ridge, CO
Posts: 20
Real Name: Mike
WRfarmer is on a distinguished road
Blown fuse when shifting into reverse

2000 SR5 manual transmision - The fuse for the dash (speedo, radio, AC, etc.) blows every time I put my Yota in reverse. I had the switch for the back up lights replaced a while back but the shop that did it has since closed.
Any ideas?
WRfarmer is offline   Reply With QuoteReply With Quote
Old 08-07-2020, 07:55 PM #2
brillo_76's Avatar
brillo_76 brillo_76 is offline
Elite Member
 
Join Date: May 2017
Location: Western PA
Posts: 6,012
Real Name: Jon
brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute
brillo_76 brillo_76 is offline
Elite Member
brillo_76's Avatar
 
Join Date: May 2017
Location: Western PA
Posts: 6,012
Real Name: Jon
brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute
Shorted wire or bulb in your reverse circuit.

Sent from my SM-J337V using Tapatalk
__________________
7 3rd gens listed in the build thread (2 are parts mobiles)
Build Thread: https://www.toyota-4runner.org/3rd-g...os-builds.html
Brillo's Bucket Fluid Ex changer: https://www.toyota-4runner.org/3rd-g...ml#post3358086
Sparks Plugs Wire and Coil Information: https://www.toyota-4runner.org/3rd-g...on-5vz-fe.html
brillo_76 is offline   Reply With QuoteReply With Quote
Old 08-08-2020, 10:42 PM #3
WRfarmer WRfarmer is offline
Junior Member
 
Join Date: Oct 2014
Location: Wheat Ridge, CO
Posts: 20
Real Name: Mike
WRfarmer is on a distinguished road
WRfarmer WRfarmer is offline
Junior Member
 
Join Date: Oct 2014
Location: Wheat Ridge, CO
Posts: 20
Real Name: Mike
WRfarmer is on a distinguished road
Quote:
Originally Posted by brillo_76 View Post
Shorted wire or bulb in your reverse circuit.

Sent from my SM-J337V using Tapatalk
I'm not experienced at wiring. How do I trace/isolate the problem? Could it be the switch for the back up lights? It Blows the fuse every time I put it in reverse.
WRfarmer is offline   Reply With QuoteReply With Quote
Old 08-08-2020, 10:50 PM #4
nissanh nissanh is offline
Senior Member
 
Join Date: Jul 2012
Location: Odessa/Midland TX
Posts: 3,711
nissanh has a spectacular aura about nissanh has a spectacular aura about nissanh has a spectacular aura about
nissanh nissanh is offline
Senior Member
 
Join Date: Jul 2012
Location: Odessa/Midland TX
Posts: 3,711
nissanh has a spectacular aura about nissanh has a spectacular aura about nissanh has a spectacular aura about
It will be most likely the towing wire harness. If you don't use it, disconnect it and see what it does.

The switch does not cause anything except connect the input to output to make the circuit complete.

If you have OEM koito light bulbs then it is not the issue either.
nissanh is offline   Reply With QuoteReply With Quote
Old 08-09-2020, 01:09 PM #5
WRfarmer WRfarmer is offline
Junior Member
 
Join Date: Oct 2014
Location: Wheat Ridge, CO
Posts: 20
Real Name: Mike
WRfarmer is on a distinguished road
WRfarmer WRfarmer is offline
Junior Member
 
Join Date: Oct 2014
Location: Wheat Ridge, CO
Posts: 20
Real Name: Mike
WRfarmer is on a distinguished road
Disconnected the towing harness and still pops the fuse when I put it in reverse.
WRfarmer is offline   Reply With QuoteReply With Quote
Old 08-09-2020, 07:09 PM #6
HiluxSurf SSR-G's Avatar
HiluxSurf SSR-G HiluxSurf SSR-G is offline
Member
 
Join Date: May 2004
Location: Mideast
Posts: 977
HiluxSurf SSR-G will become famous soon enough HiluxSurf SSR-G will become famous soon enough
HiluxSurf SSR-G HiluxSurf SSR-G is offline
Member
HiluxSurf SSR-G's Avatar
 
Join Date: May 2004
Location: Mideast
Posts: 977
HiluxSurf SSR-G will become famous soon enough HiluxSurf SSR-G will become famous soon enough
was the back-up switch done recently? the issue could be there. try crawling under the steering column and try to take a look at it
HiluxSurf SSR-G is offline   Reply With QuoteReply With Quote
Old 08-09-2020, 09:40 PM #7
TheDurk's Avatar
TheDurk TheDurk is offline
Elite Member
 
Join Date: Nov 2006
Location: Pocono Mountains
Posts: 7,494
TheDurk is a glorious beacon of light TheDurk is a glorious beacon of light TheDurk is a glorious beacon of light TheDurk is a glorious beacon of light TheDurk is a glorious beacon of light TheDurk is a glorious beacon of light
TheDurk TheDurk is offline
Elite Member
TheDurk's Avatar
 
Join Date: Nov 2006
Location: Pocono Mountains
Posts: 7,494
TheDurk is a glorious beacon of light TheDurk is a glorious beacon of light TheDurk is a glorious beacon of light TheDurk is a glorious beacon of light TheDurk is a glorious beacon of light TheDurk is a glorious beacon of light
Quote:
Originally Posted by HiluxSurf SSR-G View Post
was the back-up switch done recently? the issue could be there. try crawling under the steering column and try to take a look at it
He will look a long time under there. He has a manual. Switch is on the side of the transmission about at the halfway height. I think it's left side but not sure. Easily seen and reached from underneath, unlike the T-case switches. Confirm that wires are red-yellow and black-yellow. Try unplugging the switch, and then bridging the two wires in the plug. If the lights then come on, you have a bad switch. If the fuse blows that way, try disconnecting at each of the rear lights in turn and remove bulbs. If no joy, you are going to have to trace that whole red-yellow wire. I can help with that if necessary.

They do sell cheapo Chinese switches for the manual back-up light so one of those could be the issue. NAPA sells a good Echlin one for a decent price.

Here is the circuit diagram for 2000.
Attached Images
File Type: pdf 118 Back-Up Light.pdf (41.7 KB, 298 views)
__________________
'99 4Runner SR5 5spd 3.4L V6 4WD(U.S), original '99 Talls in front, OME 906s in back, Hella fogs, Trekmaster shocks in front, Billy in back, no running boards, FIAMM horns, Alpine sound, Michelin LTX M/S2's, owned since new.
'97 HiLux SW4 5spd 4WD(Japan model bought in Brazil assembled in Argentina, very close to a 3.0 4Runner/Surf)
'71 FordWillys Jeep CJ5 (with straight six Ford Maverick 3.0 liter engine--lives in the mountains north of Sao Paulo Brazil)
My Backyard Frame Swap

Last edited by TheDurk; 08-10-2020 at 09:11 PM.
TheDurk is offline   Reply With QuoteReply With Quote
Old 08-10-2020, 04:40 AM #8
ElectroBoy ElectroBoy is offline
Banned
 
Join Date: Nov 2017
Location: Bay Area, CA
Posts: 2,247
Real Name: Mark
ElectroBoy has a brilliant future ElectroBoy has a brilliant future ElectroBoy has a brilliant future ElectroBoy has a brilliant future ElectroBoy has a brilliant future ElectroBoy has a brilliant future ElectroBoy has a brilliant future ElectroBoy has a brilliant future ElectroBoy has a brilliant future ElectroBoy has a brilliant future ElectroBoy has a brilliant future
ElectroBoy ElectroBoy is offline
Banned
 
Join Date: Nov 2017
Location: Bay Area, CA
Posts: 2,247
Real Name: Mark
ElectroBoy has a brilliant future ElectroBoy has a brilliant future ElectroBoy has a brilliant future ElectroBoy has a brilliant future ElectroBoy has a brilliant future ElectroBoy has a brilliant future ElectroBoy has a brilliant future ElectroBoy has a brilliant future ElectroBoy has a brilliant future ElectroBoy has a brilliant future ElectroBoy has a brilliant future
Looking at the wiring diagram, you have a short to GND either at one of the reverse bulbs or socket, or somewhere along the wiring path. I’d first suspect a problem at the bulb.

Have you replaced your reverse light bulbs recently? Maybe with LEDs? The pins in the socket may have gotten squished together and are shorting the +12 to GND when you go into reverse. Or a bulb actually is a dead short. Some LED bulbs have been known to be failed in a shorted condition.

Turn ignition off. Install a new fuse. Remove the reverse bulbs. Inspect the sockets for shorted pins. Measure the resistance between the bulb’s two pins. It should be low resistance of a few ohms. Reverse the leads and measure again. If you get a zero ohm reading you have a shorted bulb. There’s your culprit. Repeat with the other bulb.

If each bulb is OK measure the resistance of each pin of each socket to chassis GND. Only one pin in each socket should be GND. The other pin should be open. If both pins at one socket are shorted to GND you have a shorted wire to chassis somewhere between the bulb socket and the switch, or the switch itself, that you’ll have to trace. If only one pin is GND, set brake, chock wheels, turn on ignition, put it into reverse. Fuse blows? Suspect a bad reverse switch. Fuse OK? Set your meter to read DC volts and read across the pins at each socket for 12V. Take care not to short them together. If you read 12V, turn off the ignition. Install one bulb. A known good incandescent OEM bulb and turn on the ignition and repeat the reverse test. Bulb lights OK? Turn off ignition. Install other bulb and repeat reverse test. Bulb lights? You’re good to go.

Last edited by ElectroBoy; 08-10-2020 at 04:58 AM.
ElectroBoy is offline   Reply With QuoteReply With Quote
Old 11-07-2021, 01:29 PM #9
Pair of 3rd Gens Pair of 3rd Gens is offline
Junior Member
 
Join Date: Nov 2021
Location: USA
Posts: 1
Pair of 3rd Gens is on a distinguished road
Pair of 3rd Gens Pair of 3rd Gens is offline
Junior Member
 
Join Date: Nov 2021
Location: USA
Posts: 1
Pair of 3rd Gens is on a distinguished road
Talking 98' 4Runner 10A gauge fuse blows when put in reverse - SOLVED

1998 4Runner 4WD, Limited, AUTOMATIC, 5VZ-FE 3.4L V6, 244,400 miles

10A gauge fuse randomly blows when car put in reverse.

Items checked or repaired:
- inspected wiring inside fuse panel - no issues
- checked vehicle grounds for good connections - no issues
- trailer harness wiring checked - no breakage, good harness and connector and good ground
- replaced reverse tail light bulbs with LED - no bad factory bulbs
- checked tail light bulb sockets, harnesses and wiring for corrosion/breakage - no issues
- replaced neutral safety switch on transmission (automatic v6) with new NAPA part- original factory switch was still functional
- traced and inspected wiring bundle and harnesses from tail lights to neutral safety switch on transmission and inside cab - no damage or corrosion

SOLUTION:
Upon inspection of wiring section from transmission up to the junction box, found a section on the engine wiring harness that had no wiring loom protection underneath the intake plenum. Found small area of red/yellow wire had rubbed through the insulation on a valve cover bolt. Wiring section with issue starts at the "Y" junction of the engine wiring bundle right by the oil filler cap and proceeds towards the center of the engine and then turns and goes underneath the intake plenum. Verified 3 times via wiggle test the source of the short had been located. Sealed exposed wiring with liquid sealant and wrapped with new protective loom.

10 hour search for the issue and 15 minute $5 repair.

I searched all the forums and found multiple threads with the exact issue but not one of the threads shared their specific solution to the issue on a 3rd gen v6 AUTOMATIC so I hope this information helps someone else of how my blown 10A gauge fuse issue was solved on 3rd gen automatic.



Cheers,
Pair of 3rd Gens
Attached Images
File Type: pdf 98' 4Runner Wire Fail.pdf (71.2 KB, 123 views)

Last edited by Pair of 3rd Gens; 11-07-2021 at 05:19 PM.
Pair of 3rd Gens is offline   Reply With QuoteReply With Quote
Reply

Tags
back , fuse , lights , reverse , switch

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

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 On

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Gauges and AC not working. Blown fuse, replaced fuse, blown again. What do? blairracd 3rd gen T4Rs 12 04-03-2021 05:55 PM
Delayed Shifting Into Reverse gebomartin 3rd gen T4Rs 7 05-07-2020 08:33 AM
Blown Fuse or Blown ECU? pcr777 3rd gen T4Rs 3 04-23-2013 01:40 AM
Not shifting into reverse or park ovid300 Problems & Warranty Issues 4 11-16-2011 12:22 PM
shifting from reverse to drive - v8 4wd V8Limited4wd Problems & Warranty Issues 1 03-13-2008 08:44 PM

Powered by vBadvanced CMPS v3.2.2

All times are GMT -4. The time now is 06:46 PM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.
Feedback Buttons provided by Advanced Post Thanks / Like (Lite) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.
User Alert System provided by Advanced User Tagging (Lite) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.
***This site is an unofficial Toyota site, and is not officially endorsed, supported, authorized by or affiliated with Toyota. All company, product, or service names references in this web site are used for identification purposes only and may be trademarks of their respective owners. The Toyota name, marks, designs and logos, as well as Toyota model names, are registered trademarks of Toyota Motor Corporation***Ad Management plugin by RedTyger
 
Copyright © 2020