Troubleshooting electric brakes - Fiberglass RV


Reply
 
Thread Tools Search this Thread Display Modes
 
Old 08-04-2009, 09:06 PM   #1
Senior Member
 
Roy in TO's Avatar
 
Name: Roy
Trailer: 1972 boler American and 1979 Trillium 4500
Ontario
Posts: 4,954
Last year I installed my P3 controller to go with the new axle and new electric brakes. This year they have stopped working. When I connect the trailer to the TV, all the signals etc. work, but the controller says the trailer is not connected.

I'm not sure where to start looking for the problem. The TV has a 7 pin male connector, the cable has a 7 pin female on both ends and the the trailer has a 7 pin male to plug the cable into.

How would you troubleshoot this?
What sequence would you follow?

__________________

__________________
Roy in TO is offline   Reply With Quote
Old 08-04-2009, 09:32 PM   #2
Senior Member
 
Donna D.'s Avatar
 
Name: Donna D
Trailer: Escape 5.0 TA, 2014
Oregon
Posts: 24,433
"Trailer connector disconnected or corroded." From:Tekonsha Website That's where I'd start... only because it's easy. Triple-check the connection to make sure it's tight. Test. Pull it out and scrub (green scratchy) the male pins, reconnect. Test. Dielectic grease (if the connection has ANY chance of having moisture inside) on the male pins, reconnect. Test.

That's my 2-1/2 cents beyond check the ground of course ;-)
__________________

__________________
Donna D.
Ten Forward - 2014 Escape 5.0 TA
Double Yolk - 1988 16' Scamp Deluxe
Donna D. is offline   Reply With Quote
Old 08-04-2009, 09:32 PM   #3
Senior Member
 
Bill F.'s Avatar
 
Trailer: 92 Bigfoot 13.5 ft / 05 Freestar
Posts: 177
Quote:
Last year I installed my P3 controller to go with the new axle and new electric brakes. This year they have stopped working. When I connect the trailer to the TV, all the signals etc. work, but the controller says the trailer is not connected.

I'm not sure where to start looking for the problem. The TV has a 7 pin male connector, the cable has a 7 pin female on both ends and the the trailer has a 7 pin male to plug the cable into.

How would you troubleshoot this?
What sequence would you follow?
Hi Roy,
I often find the contact surfaces on the seven pin plugs oxidize between uses and lights or brakes or both will not funtion until the plug has been inserted and removed a couple of times. Is there a fuse in the line supplying power to the controller? I have a flat 4 test plug with L.E.D's to indicate proper function of TV(bought at Princess Auto $4). I understand there is something similar for 7 pin but havn't seen one yet. If you have a means of testing the TV it eliminates 50% of your possibilities and you can then concentrate on the trailer. I have also found the 7 pin plug corroded from salt spray coming off the tires in winter. Dielectric grease inside the 7 pin can extend the life.
Bill
__________________
Bill F. is offline   Reply With Quote
Old 08-04-2009, 11:58 PM   #4
Moderator
 
Frederick L. Simson's Avatar
 
Name: Frederick
Trailer: Fiber Stream
California
Posts: 8,151
Registry
Send a message via AIM to Frederick L. Simson
Talking

I had this problem during a trip home from Bandon a couple of years ago. It started out to be intermittent, a flashing of "n.c."

First I unplugged the Brake Controller from under the dash and brought it into Camping World who bench tested it for free, and found the unit to be working correctly. Then I got out my multimeter to run continuity tests along the cords and plugs that ran along the Blue Wire path from the Controller to the Brake Drums. I found a spot inside a cabinet under a bench inside the trailer where the Blue Wire had chaffed as the wiring bundle went thru a bushing, causing it to short to ground at that spot. I spliced in a new piece to replace the chaffed section, and re-routed the Blue Wire thru it's own bushing (not bundled with other wires) and the problem was solved.
__________________
Frederick - The Scaleman
1978 Fiber Stream 16 named "Eggstasy" & 1971 Compact Jr. named "Boomerang"
Frederick L. Simson is offline   Reply With Quote
Old 08-05-2009, 07:34 AM   #5
Senior Member
 
Tim Wood's Avatar
 
Name: Tim
Trailer: Class B for now
NY
Posts: 747
I would take a circuit tester and test the blue wire to your Tug's plug and have someone push the brake pedal. If you have power there , then you know its in your trailer plug or wire back to the wheels.
__________________
Tim Wood is offline   Reply With Quote
Reply

Tags
brakes


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
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 Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Electric Brakes w/ '09 Highlander?? Jaclyn W Towing, Hitching, Axles and Running Gear 5 04-26-2009 05:10 PM
Electric Brakes Steve Smith Towing, Hitching, Axles and Running Gear 10 08-23-2008 06:36 PM
Electric brakes Greg Janke Towing, Hitching, Axles and Running Gear 11 04-01-2008 12:45 AM
electric brakes Hub Bru Care and Feeding of Molded Fiberglass Trailers 1 01-30-2007 12:19 PM
Electric brakes Greg Janke Problem Solving | Owners Helping Owners 0 12-31-1969 07:00 PM

» Upcoming Events
No events scheduled in
the next 465 days.
» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 04:37 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.