Go Back   F150online Forums > F-Series Trucks > SuperCrew
Sign in using an external account
Register Forgot Password?
Register Photos Vin Decoder FAQ Members Search Today's Posts Mark Forums Read Vendor DirectoryGarage

SuperCrew

Welcome to F150Online Forums!
Welcome to F150Online.com.

You are currently viewing our forums as a guest, which gives you limited access to view most discussions and access our other features. By joining our community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join the F150Online Forums community today!





Reply
 
 
 
 
Thread Tools Search this Thread Display Modes
  #1  
Old 11-09-2002, 02:51 AM
Junior Member
Garage is empty, add now
 
Join Date: Jan 2001
Location: Pearland, TX USA
Posts: 5
Unhappy Keep Alive Power voltage too low??

I have a '01 Screw w/ 55K miles. Recently the Service Engine Soon light came on and stayed on for a week. Autozone read this code P1633 which means "Keep alive power voltage too low."
No one there knew what this code meant nor did they have a service manual for my vehicle. Would someone translate this and tell me the best solution for this problem??
Thanks...
Reply With Quote
  #2  
Old 11-09-2002, 11:20 PM
Technical Article Contributor
2006 Ford F-150
 
Join Date: Jun 2002
Location: Under the flightpath of ORD 22R
Vehicle: 2006 FORD F150
Posts: 10,252
From the Ford 2001 Service Manual

DTC : P1633 - Keep Alive Power Voltage Too Low
Description :
Indicates that the Keep Alive Power (KAPWR) circuit has experienced a power interrupt.

Possible Causes :
Open KAPWR circuit
Damaged PCM
Intermittent KAPWR Circuit

Diagnostic Aides :
None

This is from the Service manual, I have not seen this myself, nor do I know how well the poss causes are.

The only part I see in the electrical diagram for the KAPWR ckt is on pg 25-9, the PCM. It is pin 55 ckt 729 red / white stripe.
If you don't know the PCM is located under the hood, pass. side, between the firewall, and the battery ( page 151-21, C174 )..
Sounds like something serious to me, the electrical manual gives no additional wiring locations for this, so it might be internal to the PCM.

Sorry it might not be much help.

Good luck

Good luck.

Last edited by SSCULLY; 11-09-2002 at 11:33 PM.
Reply With Quote
  #3  
Old 09-30-2008, 11:03 PM
Junior Member
Garage is empty, add now
 
Join Date: Sep 2008
Posts: 1
i have a 2001 ford f-150 with engine light on. p1633. i tried a couple mechanics but know one has a clue how to fix it. its a vehicle with flood damage and has over 100k miles. does any one maybe have a solution to this problem. i checked the battery and some other minor things. help would be appreciated! thanks
Reply With Quote
Old 09-30-2008, 11:03 PM


 
 
 
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not 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 Off
Pingbacks are On
Refbacks are Off


All times are GMT -4. The time now is 01:34 PM.


 
This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. FordŽ is a registered trademark of the Ford Motor Company
Contact Us Advertising Privacy Statement Terms of Service Jobs Forum Text Archives
Emails & Contact Details