ICM, no power in
#2
Junior Member
Thread Starter
Join Date: Jul 2011
Location: Central Florida
Posts: 6
Likes: 0
Received 0 Likes
on
0 Posts
I should add I looked at all the fuses I could find that referred to the ignition, PCM and anything that seemed relevant - all good. I'm hoping to something before the PCM. Have an old Haynes manual Buick, Olds, Pontiac full-size front wheel drive. The electrical diagrams don't seem to cover it all. I'll hit a library later that has many manuals for a more complete set of electrical diagrams. I replaced the ICM in October '14 at about 102k. On finding the crank no start, I did the spark test on the towers- no spark. So then checked power to the ICM, no volts. All else works.
The following users liked this post:
WilliamE (04-10-2015)
#4
Junior Member
Thread Starter
Join Date: Jul 2011
Location: Central Florida
Posts: 6
Likes: 0
Received 0 Likes
on
0 Posts
Thanks Tech II. I have found the C31 fuse is blowing. Hard to see on the 1st one, but swapping fuses 3x definitely shows blown. I'll be holding off for a day or 2 on further checking. I do have 12v on the hot side of C31.
Regards, Charles
Regards, Charles
#5
Junior Member
Thread Starter
Join Date: Jul 2011
Location: Central Florida
Posts: 6
Likes: 0
Received 0 Likes
on
0 Posts
Thanks Tech II. I have found the C31 fuse is blowing. Hard to see on the 1st one, but swapping fuses 3x definitely shows blown. I'll be holding off for a day or 2 on further checking. I do have 12v on the hot side of C31. I have used easyauto diagnostics before to do the crank sensor and ICM about 7 months ago. Yesterday I found a crispy plastic duct for the ICM wiring down next to cyl 1 exhaust. That will be next.
Regards, Charles
Regards, Charles
Thread
Thread Starter
Forum
Replies
Last Post
options13
Everything Electrical & Electronic
11
08-13-2006 01:42 PM