2005 caravan will turn over but won't start - DodgeTalk : Dodge Car Forums, Dodge Truck Forums and Ram Forums
 
Thread Tools
#1 Old 02-26-2012, 03:20 PM
Campingman
Registered User
 
Join Date: Feb 2012
Posts: 2
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
(Thread Starter)
2005 caravan will turn over but won't start

Hello,
My 05 Caravan suddenly will not start. I noticed that there was no spark so I checked the coil voltage and all there was, was .5 vdc. I have diagnosed it to the ASD relay not getting a ground signal from the Power train control modual. All fuses are good and Ive swapped around the relays to ensure it was not faulty. I know the crank position sensor works as I see RMP (approx 170 while starting) with OBDII code reader on live analisis. If I supply a ground to the relay it'll energize and I can start my van and it'll run normally. What could be my issue? Is it the PCM or the Intergrated Power control modual? There no apparent corrosion and all wire appears intact when I do continuity checks. Not sure if or what triggers the PCM to supply the ground.
Please advise. Thank-you

Campingman
Campingman is offline  
Sponsored Links
Advertisement
 
#2 Old 02-26-2012, 04:10 PM
no_common_sense
Registered User
 
Join Date: Jul 2010
Posts: 512
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
When you supplied ground to the relay, did you ground the control side or the switch side? Did you look for a cam sensor signal? The PCM needs to see both the crank AND cam sensor inputs or it won't energize the ASD relay. IIRC, the only time the PCM even uses the cam signal is at startup.
no_common_sense is offline  
#3 Old 02-29-2012, 05:45 PM
Campingman
Registered User
 
Join Date: Feb 2012
Posts: 2
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
(Thread Starter)
Hello,
All signals are present. the van runs perfect and I have been driving it since. If it were the cam sensor injectors would not work would it? The cam sensor is working as the OBD II code reader was seeing it and the tach on dash displays it. I have come to the conclusion that either a diode, transistor or a portion of a chip has failed but the latter is not likely.
I inquired with the dealer with respect to computer cost and concluded that at a min price of $600 to a max of $1200 before labour and shop fees for the computer was a little on the rediculous side. My I-pod has more computing power than the one in the van which in all honesty costs no more than $60 in materials
Currently I have built my own circuit using a relay, a few resistors and a transisitor. I'm using the fuel injector relay as a trigger for the transistor, which energizes the relay I've installed which inturn suplies a ground to the ASD relay.
All in all a $20 solution to fix my problem. I realize that the computer may fail at any point or may last until I retire the van but if I managed to get a month or so out of it, it's more than paid for itself. I plan to install a surge filter on the DC line as I have noticed power surges (lights dimming and returning to normal) since I have owned this van. It could have been the cause, who knows?
Anyway thank you for the response. If anyone would like to know deals of my repair let me know.

Cheers!

Last edited by Campingman; 03-01-2012 at 05:32 PM.
Campingman is offline  
#4 Old 02-29-2012, 06:11 PM
Ratchet75
Registered User
 
Join Date: Nov 2011
Posts: 497
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
There's many less expensive sources for PCMs. Believe it or not even Autozone sells them. For your 05 they're charging around $300. They come reprogrammed and ready for install.

I'd bet your Ipod has more computing power then the lunar lander had.

Circuit details? Sure thing. Let us know when you get a chance. Pics?

Haven't heard anyone bring up a surge filter for lighting flickers over the years. Great idea. It's a problem plaguing many.

Last edited by Ratchet75; 02-29-2012 at 06:19 PM.
Ratchet75 is offline  
Closed Thread

Quick Reply
Message:
Options

Register Now

In order to be able to use most of our features, 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
The registration process requires you to activate your membership by following a link in an E-Mail that will be sent to you immediately upon completing this form. You must enter a valid email address or you will not receive this activation code and you will NOT be registered. Your E-Mail address is NOT publicly available to anyone as policy.

AOL E-MAIL USERS: Please click HERE for important info pertaining to your e-mail address.
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.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
User Tag List

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page


Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
2005 Caravan Turn signals work sometimes mycaravan2 Dodge Caravan General Talk 2 01-26-2011 03:12 PM
2005 Caravan Won't start, no spark Kihlman Dodge Caravan General Talk 41 01-02-2011 09:59 PM
2008 Dodge Grand Caravan Will Not Start When You Turn the Key. Stullenator Dodge Caravan General Talk 3 08-20-2010 10:09 PM
2005 SXT Grand Caravan 3.8, Left Turn Noise cutman0122 Dodge Caravan General Talk 5 07-17-2006 09:20 PM
2005 Caravan / General Remote Start Questions Rah Dodge Caravan General Talk 2 08-05-2004 11:04 PM

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

 
For the best viewing experience please update your browser to Google Chrome