Tekonsha P3 problem

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Nov 10, 2015 | 11:18 AM

rogers017

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Trailering

Joined: May 2015

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Tekonsha P3 problem

I just picked up my new toy hauler over last weekend and it took several minutes for the P3 to see my trailer. On the way home everything went smoothly. Taking her over to storage and the P3 kept saying no trailer attached. The output voltahe is 13.6 but the output current says at 0.0 with my foot on the pedal. Is there anyting I need to check before I chalk this one up as a defective unit and get a new one?
I also used their wiring specific harness so I could plug into the factory connection if that helps out.

Nov 10, 2015 | 01:28 PM

RV_Tech

Hotshot

Joined: Jan 2010

Posts: 10,060

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From: Bristol, TN.

Yes, I would encourage caution in blaming the controller, it almost never is. The controller is most likely alerting you to a poor connection at your seven pin. You just plugged in a new trailer, go there first. The controller is the most reliable component in that entire circuit.

Just my two cents worth,

Steve

Nov 10, 2015 | 01:29 PM

Chuck's First Ford

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Joined: Jul 2015

Posts: 4,392

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From: very South Texas

check the truck connector... at the rear of the truck.. dirt/corrosion at the pins... or the pins are not pressing on the trailer pins.

Nov 10, 2015 | 02:59 PM

BPofMD

FTE Legend

Joined: Jul 2005

Posts: 65,938

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From: Millersville, MD

If all seems OK, call Tekonsha - they are most helpful manufacturer I have ever dealt with.

Nov 10, 2015 | 03:07 PM

rogers017

Thread Starter

Trailering

Joined: May 2015

Posts: 23

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Thanks for the quick info. Yeah I was a little hesitant to say a faulty trailer brake thats why I asked. The truck is a 2002 F250 and didn't seem to ever see a trailer so I will start a the 7 pin. If its just corrosion is there anything you guys reccomend (on my tractor trailer we would just use a little sandpaper but those are pins and not blades so I dont know how well that will work)?

Nov 10, 2015 | 03:57 PM

Chuck's First Ford

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Joined: Jul 2015

Posts: 4,392

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From: very South Texas

I use wet/dry (dry) 1000 grit sandpaper.. a small piece folded in half .. to do both sides at once... like a small fingernail file...

otherwise a new 7 pin connector.

Nov 19, 2015 | 09:11 AM

A Rodder

Posting Guru

Joined: Feb 2015

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I generally find if the problem is at the rear (which it usually is), it's on the BACKSIDE if the 7 way where the harness hooks to plug.

Not the actual blades of the plug.

Replacement oem style plug in plugs are available at any reputable hitvh shop or online for 12/20 dollars or so.