Bad ECM? alternator won't charge battery - Page 2 - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep Wrangler Forums > TJ Wrangler Technical Forum > Bad ECM? alternator won't charge battery

Black Friday- Cyber Monday Deals at jeepHutBlack Friday Deals !JcrOffroad Black Friday Sale!

Reply
Unread 08-03-2013, 09:53 PM   #16
Timmay82
Registered User
2006 TJ Wrangler 
 
Join Date: Apr 2010
Location: Oceanside, California
Posts: 285
Doesn't the PCM regulate the alternator on our Jeeps? I don't think their are internal regulators on our alternators and if that is the case it is usually either the PCM, or more commonly a wire that is intermittently shorting. I would carefully check the wring very thoroughly. If that comes up short I think the dealer can test the PCM but I have no idea of the costs. If the wiring comes up good it is more than likely a PCM issue.

__________________
Disclaimer: All opinions expressed, (or even assumed) under the JeepForum user name: Timmay82, are strictly that of somebody else. If you don't agree, feel that you have been attacked and as such your feelings are hurt by the above said user, than you may present any issues that you may or may not have with somebody else!
Timmay82 is offline   Reply With Quote Quick reply to this message
Unread 08-03-2013, 11:30 PM   #17
Knuckelhead
AFSOC Retired
 
Knuckelhead's Avatar
2000 TJ Wrangler 
 
Join Date: Aug 2005
Location: Colorado
Posts: 15,570
Quote:
Originally Posted by Timmay82 View Post
Doesn't the PCM regulate the alternator on our Jeeps?
Yes it does...
Knuckelhead is offline   Reply With Quote Quick reply to this message
Reply

Tags
alternator , charging , ecm , pcm , voltage regulator

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.
Note: All free e-mails have been banned due to mis-use. (Yahoo, Gmail, Hotmail, etc.)
Don't have a non-free e-mail address? Click here for a solution: Manual Account Creation
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


Suggested Threads





Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.