Diagnosis challenge: why does ABS light lead to battery charging problem? - Ford Powerstroke Diesel Forum
Please Visit our Site Sponsors
Powerstroke.org is the premier Diesel Truck Forum on the internet. Registered Users do not see the above ads.
LinkBack Thread Tools Display Modes
Old 06-25-2010, 10:39 AM
Powerstroke.org Rookie

Join Date: Oct 2006
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Question Diagnosis challenge: why does ABS light lead to battery charging problem?


Looking to see if this is a common/easy issue before I call in the cavalry...

Yesterday: noticed that the ABS light was on. "That's odd" I thought. So I shut it down when I got home. Then restarted it – still get the light. "Hmmmm, wonder what that's all about?" Go in, have dinner, forget all about it.

Today: "click" – battery dead, no stratum.

Then: charge the battery for a few hours. Start it up – let idle if 20 min. Perform safety check before I leave to get stranded somewhere – turn it off to try a restart. "Click"

So – I've got no charge light and no CEL. But I DO have an ABS light and apparently no charging. Batteries are about 18mos old.

Any guesses?

Datum: 2004 Excursion 6.0, 2wd, replaced both engine harnesses 2 years ago and has been 100% trouble-free ever since.

Reply With Quote Quick reply to this message
Sponsored Links
Old 06-25-2010, 11:11 AM
Powerstroke Techie


Join Date: Jun 2008
Location: Brampton, Ontario, Canada
Posts: 2,584
Thanks: 0
Thanked 3 Times in 3 Posts
Feedback Score: 0 reviews
Straight from the Ford Workshop Manual, Section 206-09, Pinpoint Test 'Q' for DTC B1676 Voltage Out Of Range. This pinpoint test instructs you to check the voltage reading across pin 16 (tan w/red tracer) and pin 8 (light green w/yellow tracer) of the main ABS connector (with the connector disconnected from the module and the engine running). It then asks if voltage is greater than 16.6 volts or less than 9.2 volts. If YES, the next step is to CHECK CHARGING SYSTEM. If it does fall between the above readings, it instructs you to replace the ABS module. If I were to guess, I would say it has to be less than the latter of the two voltages specified, by what you are describing.

Last edited by m-chan68; 06-25-2010 at 11:21 AM.
Reply With Quote Quick reply to this message
Sponsored Links

Quick Reply

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:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
What state or province do you live in?
Security Question
*Required, this field is not shown to others. Enter the last two characters of the word "Powerstroke"
Security Question #2
*Required, this field is not shown to others. "While balancing on a piece of wood, two inches by four inches known as a 2x4, john and his friend sally both spotted a dalmatian inside a truck with sirens, headed to put out a fire. State the animal mentioned in the sentence above."
Please select your insurance company (Optional)


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 05:46 PM.

Powered by vBulletin® Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.1
Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.