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Reversing sensors not working (water in trailer plug)

Reversing sensors not working (got water in the rear trailer plug) checked the 2 fuses (under glove compartment/dash and the one in the engine just in front of the firewall and both are OK.... ideas??? ford said I had to bring it in and might take 3-8 hours! it has also stopped my rear beeper thing working when I am reversing, am worried it has knocked out my 4x4 as well - so somewhere there is a computer that is not working. Happy to have any ideas as to where to begin

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1 Answer

Location of fuse to control side mirrors on 2009 97x


Fuse panel in end of fascia
No. Amp. Function
1 15 Steering wheel lock
2 5 Steering column unit; ignition switch
3 10 Hands-free; cabin CD changer; SID
4 10 Main instrument unit; manual climate control;
automatic climate control (ACC)
5 7.5 Control module in front doors; Park Brake Shift Lock
(automatic transmission)
6 7.5 Brake light switch
7 20 Fascia fuse panel; fuel filler door
8 30 Control module in passenger front door
9 10 Fascia fuse panel
10 30 Trailer socket; electrical socket in storage compartment
between seats
11 15 Data link connection (diagnostics)
12 15 Interior lighting incl. glove compartment
13 30 Accessories
14 20 Radio, sound system I; control panel,
Infotainment System
15 30 Control module in driver's door
16 - -
17 - -
18 7.5 Manual climate control; fan
19 - -
20 7.5 Headlight levelling switch
21 7.5 Hands-free; brake light switch; manual climate
control; clutch pedal switch
22 30 Cigarette lighter
23 40 Cabin fan
24 7.5 Airbag control module
25 - -
26 5 Yaw sensor (cars with ESP)
27 - -


Trunk fuse panel, left-hand side
No. Amp. Function
1-5 MAXI -
6 30 Control module in left rear door
7 30 Control module in right rear door
8 20 Trailer
9 - -
10 30 Left-hand brake light; rear right turn signal; right tail
light; right reversing light; high-mounted brake light;
trailer lights
11 - -
12 - -
13 - -
14 - -
15 15 Seat heating, left seat
16 15 Seat heating, right seat
17 7.5 Autodimming rearview mirror; rain sensor; tire
pressure monitoring
18 15 Sunroof
19 7.5 Telematics (OnStar)
20 7.5 DVD player (navigation system)
21 7.5 Saab Parking Assistance (SPA); control module in
rear doors
22 30 Amplifier, sound system III
23 - -
24 10 Movement sensor; CD changer in trunk (accessory)
25 30 Electrically adjustable driver's seat with memory
26 30 Right-hand stop light; rear left turn signal; left tail
light; rear fog light; left reversing light; license plate
lighting; trunk lighting; trailer lights
27 - -
28 - -
29 - -

Fuse panel in front of battery
No. Amp. Function
1 60
MAXI
Secondary air injection pump (certain models)
2 20 Fuel pump; preheated oxygen sensors (lambda
probe)
3 10 A/C compressor
4 30 Main relay
Relays
1 Secondary air injection pump
2 A/C-compressor
3 Preheated oxygen sensors (lambda probe)
4 Main relay, engine (ECM/EVAP/injectors)

Sep 13, 2012 | 2006 Saab 9-7X

1 Answer

No power to trailer plug on toyota fj fuses are good


if you mean a 4 pronged plug at the rear of your vehicle that allows you to plug in and tow a trailer safely and legally , then get yourself a testlight and check each prong for power. 1 leftturn, 2-rightturn, 3-parking lights 4-ground .if you have no power at plug check condition of wiring connections at plug and follow harness to source. if you have power at plug the problem is in the trailer. check groundwire, wiring,and bulbs.

Apr 16, 2012 | Cars & Trucks

1 Answer

Can't get the back up light to burn, the fuse & bulbs aare good so it must be the switch, Where is it located???


Might want to verify the switch operation by checking the 7 pin trailer tow adapter for the reverse circuit. This is a standard 7 pin RV type plug
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The "reverse switch" is called the DTR ( Digital Transmission Range ) Sensor, and it is mounted on the side of the transmission. This also contains the contact for only starting the truck in park or neutral, so if that works correctly, I would take a SWAG that the reverse section of it is OK ( but that is a SWAG ).

You can check the 7 pin, if that reverse works, the DTR is fine and the issue could be at the rear of the truck with the splice ( which the trailer tow adapter also goes through ).
You need to drop the spare tire to get to the connector, it is a large multi pin connector, reverse is the Black w/ pink stripe wire.

Feb 17, 2011 | 2004 Ford F150

1 Answer

I blew #5 and #6 fuse under my hood. now my running lights stay on plus my overdrive light blinks and my transmission runs bad.


BJB ( aka Battery Junction Box , engine compartment fuse panel ) fuse #5 is for the trailer tow reversing lamp relay & the trailer tow running lamp relay. This is to the normally open contacts on those relays, which is the circuit to the 7 pin trailer tow adapter.
- Have you checked your 7 pin trailer tow adapter for metal left in there from a trailer plug ?
If you pull those 2 relays and replace fuse #5, does the fuse blow ? If so under what conditions ( i.e. when the headlamps are turned on, or when the truck is placed in reverse ) ?

BJB Fuse # 6 feeds the park lamp relay & the headlamp relay for the autolamp function. This could be where the lights staying on it coming from, but I would have guessed just the autolamp would have stopped working.
When the parking lamps are staying on, is this with the main headlamp switch in the auto position, or with the switch turned off.

The blinking OD light is the transmission reporting an error ( trans sensor issue or the actuator circuits have failed ).

The 1st place to check for this ( which is somewhat connected to the BJB Fuse #5 ) is the DTR ( Digital Transmission Range ) Sensor on the side of the transmission.

Could be the DTR connector is gummed up with road dirt, causing an issue. Part of the DTR is for starting ( Neutral or Park acts as a switch ) and part is the reverse ( again acting like a normal switch ) the other parts of the DTR feed information to the PCM for shift control and for 44 ( if the truck is a 4x4 ) for shift operation.

Start with the DTR on the side of the trans, unplug the connector and clean it with contact cleaner, and the check on the relays above.

Please report back your findings as a comment on this problem.

Thanks

Oct 27, 2010 | 2001 Ford F150 Styleside SuperCrew

2 Answers

2009 cargo van chevy 2500-- cant find fuse for left directionals


first never plug back in to that trailer, it may have bad wiring, the next thing to do is to check the front and rear bulbs, they may have blown,if it was a fuse the signal inside would not blink,so this tells me you may have blown the bulbs,and also this trailer is unhooked from the van and lights still dont work?. good luck.

Mar 21, 2010 | 2009 Chevrolet Traverse

1 Answer

I just rewired my 20'deckover trailer. I used good quality lcd's. I have the 7 and 4 pin plugs. everything works but the parking lights on both plugs. I have a 2006 f-150 extended cab. bought a test plug...


Did you check the fuse for the trailer tow adapter parking lamps ? This is a separate fuse from the truck's parking lamps.
Fuse #10 is the Trailer Tow parking lamps ( via the trailer tow parking lamp relay ) and this is the same fuse for the trailer tow reversing lamps ( via the trailer tow reversing lamp relay ).

If you did not get an owners manual with your truck ( purchased used ), you can download one from Ford :
https://www.fleet.ford.com/maintenance/owners_manuals/default.asp

Diagrams for the Trailer Tow adapter :

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Feb 21, 2010 | 2006 Ford F-150

3 Answers

No power to rear plug for lights on a trailer fuses look good


Do you mean nothing works or just the power lead? If nothing works I would check the ground. If just the power lead doesn't work on the I know on the older superdutys the large fuses had to be installed in the fuse box under the hood to make it work. They were usually in the bag with the trailer brake controller wiring and had directions on where they went. Hope it helps

Jan 15, 2010 | 2008 Ford F 450 Super Duty

2 Answers

My reverse lights don't work on my 04 F150 do you think the back-up switch is bad or just a fuse? javascript:;


I would check the bulbs, remove them and test with a DC power source ( DC power adapter to 2 wires Pos + Neg )

Fuse #14 has the reverse lamps on it, as well as the Day Time Running Lamps ( DRL ) relay coil, the shift interlock ( would not be able to take the truck out of park, while it was running ), and some other items I am missing at the moment.

If you cannot make the test harness to a DC power outlet, you can block the wheels ( at least 2 - front and rear ) on a level surface, turn the key to the run position ( do not start ) and place the truck in reverse, and check the bulb socket with a meter or test light to check for power.
If it is installed, you can also check the Trailer Tow adapter reverse circuit as well ( this is relay is triggered by the reverse circuit ).

If you do not have power at either ( don't forget to check for corrosion on the trailer tow 7 pin adapter ) this would be the DTR ( Digital Transmission Range ) sensor on the side of the automatic transmissions.

Have you used an aux backup lamp on the truck's reverse circuit ? ( not the trailer tow 7 pin adapter )
The DTR sensor and reverse circuit does not like 1 AMP additional load on it ( the lights will not burn at full brightness ) and if an additional load has been on them, the DTR sensor at the reverse contacts could be carbon'd up.

Nov 07, 2009 | 2004 Ford F150

3 Answers

Is there a hidden 'inline' fuse on a 04/6 cy


There are seperate "trailer" fuses in the fuse box in the engine compartment. Separate fuses for trailer left, right and running lights.

Check all fuses, I had the same issue before.

Good luck.

Aug 24, 2009 | 2004 Chevrolet TrailBlazer

2 Answers

Rear led brake light broke, replaced but new not working


YOU MIGHT WANT TO TRY TESTING THE TRAILER PLUG FUSE SOME OF THE THIRD BRAKE LIGHTS WORK OFF THAT FUNCTION. IF THAT DOES WORK TEST THE PLUG FOR POWER BEFORE THE PLUG, IF YOU HAVE POWER THAN IT IS IN THE PLUG, IF YOU DONT THAN CHANCES ARE IT IS IN THE FUSE BOX TEST ALL FUSES UNDER DASH AND UNDER THE HOOD.

May 20, 2009 | 2005 GMC Yukon Xl Denali

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