Electrical problems. PCM and tail lights - Ford Powerstroke Diesel Forum
Powerstroke.org is the premier Diesel Truck Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 06-03-2012, 10:11 PM
Member
 

Join Date: May 2012
Posts: 37
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
No power to pcm?

I had to pull the fuse box under the hood out and when i put it back my truck wouldnt start. Turn the key on and no wait to start, no power to my dp tuner, no fuel pump. I replaced the pcm with another one and same thing. Checked all fuses and cant find the issue. Does anyone know what fuses power the pcm? I don't have a book and am not home to use the laptop and have a hard time finding info on my phone. This is our only vehicle right now so any advice would be great.

EDIT: I forgot to mention whdn I hooked the battery back up the key was on. I'm thinking that might have burned something up but idk what

Last edited by FatKid; 06-04-2012 at 07:01 AM.
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 06-03-2012, 10:12 PM
Member
 

Join Date: May 2012
Posts: 37
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Almost forgot the truck is a 2000 7.3 automatic 4x4 cc.

So I just checked and I have power going through the IDM and PCM relays. Didn't check the FP relay though.
EDIT: just checked pin 71 and looks like no power to pcm. Fuse 24 is good and cig lighter is on. Maybe I checked relaya wrong? I didn't hear a click but volt meter said it was sending power.
I did not check power for memory saver. If that was not getting power would it still turn on?


So I used a jumper wire on the relay output for the pcm and I hear clicks but still no fuel pump or wait to start light. I also checked for power on pin 71 when I did this but still nothing from the pcm... maybe IDM?

Last edited by FatKid; 06-04-2012 at 07:08 AM.
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Display Modes

Posting Rules
You may post new threads
You may 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 On
Pingbacks are On
Refbacks are On



All times are GMT -8. The time now is 06:41 AM.


Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.1
Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.

vB.Sponsors