24 Valve Engine and Drivetrain Discuss the 24 Valve engine and drivetrain here. No non-drivetrain discussions please. NO HIGH PERFORMANCE DISCUSSION!

PDC to PCM electrical issues

Thread Tools
 
Search this Thread
 
Old Jul 2, 2018 | 10:52 AM
  #1  
NSTAG8R1963's Avatar
Thread Starter
Registered User
 
Joined: Mar 2018
Posts: 1
Likes: 0
From: Mobile Alabama
PDC to PCM electrical issues

I recently sent my ECM off to be reiared. Once it was installed, there were still issues with getting it started and staying running. the ECM repair technition told me I have issues with fuel delivery. I have narrowed the problen to PDC fuse #3 (circuit A14 RD/WHT) thru the wiring harness to PDM 1 on the firewall.With everything plugged in my test light lights up when I touch #3 fuse "blade". I can unplug connecter 1 at the PCM and the light goes off. The same circuit will also branch off to the connecter and connect to the ECM wireing harnedss which powers the lift pump. I have been able to get it started but will no stay started.

I think there may be an issue inside the PCM????
Right now the ECM is unplugged along with connecters C125 and C126 only 1 battery is in it with ground hookd up. there are no fuses or relays in the PDC (I jumped fuel system relay to complete the circuit to be tested) O
Once that issue is corrected I can continue to check "downstream" of C125 and C126
Any thoughts or suggestion need to correct/fix this issue will be greatly appreciated.

New lift pump and new injector pump. Injector hot wire test will get it to run.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Big Perm
1st Gen. Ram - All Topics
9
Dec 18, 2007 08:44 PM
alwaysfaded
3rd Generation Ram - Non Drivetrain - All Years
4
Apr 4, 2007 08:37 PM
mamm7215
2nd Gen. Dodge Ram - No Drivetrain
6
Aug 23, 2004 06:48 PM
MSimmons
3rd Generation Ram - Non Drivetrain - All Years
7
Feb 2, 2003 02:09 PM




All times are GMT -5. The time now is 10:23 AM.