ECU fuse blown
#1
12-19-2012 | 08:39 AM
Thread Starter
|
Newest Of Newbies
Joined: May 2012
Posts: 13
ECU fuse blown
96 accord ex. ECU #33 15a fuse has blown twice on me. I was driving when my car dies, i get it off the main road. ECU fuse is blown. I replace it with the only spare fuse I have, a 30amp. I manage to get home and it pops right when I get into my driveway. I take off work yesterday to try and figure it out.
I checked:
PGM-FI main relay, fuel injectors, fuel inj wires, fuel pump (comes on and goes of like it should/has voltage going to it.), O2 wires, several ground wires (mostly in engine bay),
I got to this point FROM factory service manual checking fuel supply system:
is now available, replace the original
But regardless, after checking a bunch of things, I replace the fuse again and start the car, ran fine for 30 min so i shut it off and this morning I drove to work with no problem. I am at a loss. Any help or suggestions would be really appreciated here.
I checked:
PGM-FI main relay, fuel injectors, fuel inj wires, fuel pump (comes on and goes of like it should/has voltage going to it.), O2 wires, several ground wires (mostly in engine bay),
I got to this point FROM factory service manual checking fuel supply system:
Measure the voltage between
A7
(
+ ) terminal and A23 ( - ) terminal
when the ignition switch is
first turned ON for two seconds.
when the ignition switch is
first turned ON for two seconds.
Is there 1.0 V or less?
-Mine jumps up to 12v automatically and stays there. Says i need to do this...
Substitute
-Mine jumps up to 12v automatically and stays there. Says i need to do this...
Substitute
a known-good ECM
and recheck. If pescribed voltage
and recheck. If pescribed voltage
is now available, replace the original
But regardless, after checking a bunch of things, I replace the fuse again and start the car, ran fine for 30 min so i shut it off and this morning I drove to work with no problem. I am at a loss. Any help or suggestions would be really appreciated here.
#2
12-19-2012 | 11:38 AM
Been Around A Long Time Member
Joined: Jul 2011
Posts: 1,008
From: Denver
From the Power Distribution Circuit (2 of 4) diagram, back-up/radio fuse 33 powers:
- ECU
- Stereo Radio/Cassette Player
- Clock
- TCM (V6)
- Security Indicator (SE)
#5
01-01-2013 | 07:41 AM
Thread Starter
|
Newest Of Newbies
Joined: May 2012
Posts: 13
Just an update. My car spent a week at the dealer and they couldn't find or reproduce anything with the ECU fuse blowing. I am at a loss for now. Good or bad the fuse has not blown again in the past couple weeks after it happened two times in one day.
Just FYI, this car is bone stock all the way through. Well, there is a new ignition wire harness and lock assembly. The only other problem I was having at the time was a random missfire due to bad spark plug wires.
Thanks for the help. Lets hope it just goes away and I will keep a box of 15a fuses in my glove box just incase.
Just FYI, this car is bone stock all the way through. Well, there is a new ignition wire harness and lock assembly. The only other problem I was having at the time was a random missfire due to bad spark plug wires.
Thanks for the help. Lets hope it just goes away and I will keep a box of 15a fuses in my glove box just incase.
Thread
Thread Starter
Forum
Replies
Last Post
linden
General Tech Help
3
12-09-2012 12:09 PM
Klimentiy
General Tech Help
6
09-14-2011 11:46 PM
