Notices
86-95 Trucks & 4Runners 2nd/3rd gen pickups, and 1st/2nd gen 4Runners with IFS
Sponsored by:
Sponsored by: DashLynx

30A AM2 Fuse Keeps Blowing

Thread Tools
 
Search this Thread
 
Old 03-29-2022, 10:01 PM
  #1  
Registered User
Thread Starter
 
JordanTaylor's Avatar
 
Join Date: Mar 2022
Posts: 23
Likes: 0
Received 0 Likes on 0 Posts
Unhappy 30A AM2 Fuse Keeps Blowing

Hey guys,

I have scoured the internet trying to find a proper answer to my question and I can't seem to get a definite answer.

I have an 87 Toyota Pickup with the 22R engine. I keep blowing the AM2 30Amp fuse - Which as far as I can read is the Ignition switch fuse?

Anyways, I am trying to find a clear answer on exactly what this amp powers and hopefully see if someone has a wiring diagram for the 87 with a 22r and any tips on how to find shorts as easily as possible

Thanks in advance
Old 03-30-2022, 05:33 AM
  #2  
Registered User
 
RAD4Runner's Avatar
 
Join Date: Mar 2012
Posts: 7,084
Received 663 Likes on 455 Posts
Welcome to the forum.
A problem well-stated is a problem solved. Exactly when does it blow? As soon as you put it in? As soon as you turn IGN on?
Does anything else blow? EFI fuse? (behind left side kick panel).
Also inspect Black wire with red stripe from fuse to fuel injector resistor module - the aluminum box with heat sink on inner fender near starter relay.

...any tips on how to find shorts as easily as possible
Got a multi-meter? If not, Beijing Freight is your friend Then, we'll go from there.




Old 03-30-2022, 07:02 AM
  #3  
Registered User
 
JoeS's Avatar
 
Join Date: Aug 2014
Location: SouthEastVirginia
Posts: 554
Received 151 Likes on 126 Posts
Just curious. What is the unit with the cooling fins located right next to the starter relay? Thanks
Old 03-30-2022, 08:43 AM
  #4  
Registered User
 
RAD4Runner's Avatar
 
Join Date: Mar 2012
Posts: 7,084
Received 663 Likes on 455 Posts
Originally Posted by JoeS
Just curious. What is the unit with the cooling fins located right next to the starter relay? Thanks
Pls read post above.
Old 03-30-2022, 09:21 AM
  #5  
Registered User
Thread Starter
 
JordanTaylor's Avatar
 
Join Date: Mar 2022
Posts: 23
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by RAD4Runner
Welcome to the forum.
A problem well-stated is a problem solved. Exactly when does it blow? As soon as you put it in? As soon as you turn IGN on?
Does anything else blow? EFI fuse? (behind left side kick panel).
Also inspect Black wire with red stripe from fuse to fuel injector resistor module - the aluminum box with heat sink on inner fender near starter relay.


Got a multi-meter? If not, Beijing Freight is your friend Then, we'll go from there.




Hi, Thank you very much for the reply and you're right. So as far as I can tell it blows when I actually turn the ignition over and crank the engine which obviously leads me to believe that there's a short between the ignition switch and the AM2 fuse.

This is the 22r engine, not the 22r-e.

I can't seem to find schematics for the 22r, only the r-e. All of the links that I have tracked down all seem to be years old and broken.

I am just trying to find out exactly which wires ill need to check if possible. I've never had to deal with any electrical issues thus far with the vehicles I have owned and put off learning it for awhile but now I have no choice.

Thank you in advance. Much appreciated.
Old 03-30-2022, 09:22 AM
  #6  
Registered User
Thread Starter
 
JordanTaylor's Avatar
 
Join Date: Mar 2022
Posts: 23
Likes: 0
Received 0 Likes on 0 Posts
Also, no, nothing else blows, just the AM2 fuse as far as I can tell - the 15A ignition fuse is still intact inside the cab and the rest of the fuses in the engine compartment are intact and I have checked them with my multimeter.
Old 03-30-2022, 10:10 AM
  #7  
Registered User
 
JoeS's Avatar
 
Join Date: Aug 2014
Location: SouthEastVirginia
Posts: 554
Received 151 Likes on 126 Posts
Didn't see any mention of that unit in anything above. I did find out it's the resistor solenoid relay next to the starter relay. Thanks for the help

Last edited by JoeS; 03-30-2022 at 10:11 AM.
Old 03-30-2022, 10:59 AM
  #8  
Registered User
 
RAD4Runner's Avatar
 
Join Date: Mar 2012
Posts: 7,084
Received 663 Likes on 455 Posts
Originally Posted by JoeS
Didn't see any mention of that unit in anything above. I did find out it's the resistor solenoid relay next to the starter relay. Thanks for the help
There is no resistor solenoid relay


Last edited by RAD4Runner; 03-30-2022 at 11:01 AM.
The following users liked this post:
JoeS (03-30-2022)
Old 03-30-2022, 11:32 AM
  #9  
Registered User
 
JoeS's Avatar
 
Join Date: Aug 2014
Location: SouthEastVirginia
Posts: 554
Received 151 Likes on 126 Posts
Thanks again. Missed that twice.
The following users liked this post:
RAD4Runner (03-30-2022)
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
deepthinker22
84-85 Trucks & 4Runners
5
04-11-2019 04:38 PM
clf4i
General Electrical & Lighting Related Topics
2
01-01-2012 07:35 AM
ozziesironmanoffroad
86-95 Trucks & 4Runners
7
09-30-2008 09:06 PM
blue87
General Electrical & Lighting Related Topics
2
07-25-2007 04:33 AM
Henryv
95.5-2004 Tacomas & 96-2002 4Runners
2
03-20-2003 02:24 PM



Quick Reply: 30A AM2 Fuse Keeps Blowing



All times are GMT -8. The time now is 05:48 AM.