I need fuse help!
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Elder User
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From: Mountaintop, PA
I need fuse help!
There are two fuses in the fuse panel under the hood; they are both 7.5? or 75?, amp fuses. the one closest to the front of the truck was blown. What is the blown fuse for?
The fuse positions are #19 (which was blown) and #18 (Which was not blown)
BTW- does anyone have a listing of fusee locations for both under the hood and inthe truck for future reference?
thanks -tim
The fuse positions are #19 (which was blown) and #18 (Which was not blown)
BTW- does anyone have a listing of fusee locations for both under the hood and inthe truck for future reference?
thanks -tim
Last edited by pullinair; Feb 25, 2007 at 03:57 PM. Reason: forgot somethng
Cargo Master
Joined: Jun 2003
Posts: 3,292
Likes: 6
From: Ardenvoir, Washington
Originally Posted by pullinair
There are two fuses in the fuse panel under the hood; they are both 7.5? or 75?, amp fuses. the one closest to the front of the truck was blown. What is the blown fuse for?
The fuse positions are #19 (which was blown) and #18 (Which was not blown)
BTW- does anyone have a listing of fusee locations for both under the hood and inthe truck for future reference?
thanks -tim
The fuse positions are #19 (which was blown) and #18 (Which was not blown)
BTW- does anyone have a listing of fusee locations for both under the hood and inthe truck for future reference?
thanks -tim
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Elder User
Joined: Aug 2006
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From: Mountaintop, PA
I figured out is was the #1 fuse -trailor tow pakage.
While I was rooting around the panel i found out my truck does not have an A/C diode.
It sits beside the PCM diode, in the under the hood fuse box. I do have air conditioning in the truck if thats what the A/C stands for. Leaves me to believe I am missing that diode. Even if it stood for alt current I should still have one.
Any thoughts?
While I was rooting around the panel i found out my truck does not have an A/C diode.
It sits beside the PCM diode, in the under the hood fuse box. I do have air conditioning in the truck if thats what the A/C stands for. Leaves me to believe I am missing that diode. Even if it stood for alt current I should still have one.
Any thoughts?
Cargo Master
Joined: Jun 2003
Posts: 3,292
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From: Ardenvoir, Washington
#36 is "not used".. #37 (bottom right corner) is your PCM relay diode.. Surprised you don't have A/C.. thought everyone had air on their trucks..In looking at all the fuses in both under the dash and under the hood, don't see any listed for Air Conditioning.
Last edited by clintbonnie; Feb 25, 2007 at 05:58 PM.
Post Fiend
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From: Central, Al
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Elder User
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From: Mountaintop, PA
Originally Posted by amiller93
Pullinair I have a PDF of both fuse panels if you want it PM me your email address.
Wondering why i did not have an A/C diode beside the PCM diode still.
I do have air conditioning on the truck. Am i missing it?
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Cargo Master
Joined: Jun 2003
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From: Ardenvoir, Washington
Originally Posted by pullinair
Wondering why i did not have an A/C diode beside the PCM diode still.
I do have air conditioning on the truck. Am i missing it?
Post Fiend
Joined: Jun 2006
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From: Central, Al
Found it. it is the AC Clutch diode. Its not jumped with a piece of wire is it?
It is on the ground side of the AC clutch solenoid. My guess would be someone wire the solenoid straight to ground bypassing the diode.
Want the diagram so you can trace it?
It is on the ground side of the AC clutch solenoid. My guess would be someone wire the solenoid straight to ground bypassing the diode.
Want the diagram so you can trace it?
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Elder User
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From: Mountaintop, PA
there was a wire coming out of the fuse box when i bought the truck, bt it was snipped and never led to anything. I cant remember if the wire was stuck in the A/C diodes place or not. Do I need to get a diode. Im kind of lost still wether i should have on or not.
Post Fiend
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From: Central, Al
From the diagram it appears to be there to prevent a back feed of voltage to ground in the event of solenoid failure. Cant really see any other reason for it. If your AC clutch is engaging the solenoid must be getting ground from somewhere
Cargo Master
Joined: Jun 2003
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From: Ardenvoir, Washington
Originally Posted by pullinair
Im kind of lost still wether i should have on or not.
Laughing Gas
Joined: Jul 2003
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From: Littleton, Colorado
The A/C clutch will work with or without the diode. The diodes in the batt junction box A/C & PCM are there to protect against any surge which could rarely backfeed through the A/C clutch solenoid and damage any sensitive electronics in the PCM. I would get a replacement for it when you get a chance, but I wouldn't make it a life driving priority. The computer contolled cars and trucks of today are goofy sensitive to any electrical anomolies. Lightning could strike our trucks and 999,999 out of 1,000,000 everything would be fine, but you could discharge a static charge from your fingertip and fry the PCM. Electricity is a strange force. I'm a master electrician, and I don't understand a lot of things I see in a day of service work. Rarely in a 12V direct current electrical system do reverse surges happen, but Ford must have had enough of them happen out of the millions of vehicles they have produced to see it as a cost effective "warranty insurance" policy.
The A/C Diode part number is F57B-14A604-A
Hope that helps ease your mind pullinair,
Austin
The A/C Diode part number is F57B-14A604-A
Hope that helps ease your mind pullinair,
Austin
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Mike C