2004 Ford F550 No Communication with PCM

This Video also includes
2004 FORD F550 brake pressure switch location
2004 FORD F550 mass air flow location
2004 FORD F550 electric fan clutch location
2004 FORD F550 glow plug control module location
2004 FORD F550 EGR valve actuator location
2004 FORD F550 injection pressure regulator IPR location
+++Our Facebook Page+++
/ dallasautodiag
**Our website**
dallasautodiag...
^^^Donations are received on the link bellow^^^
www.paypal.com...

[@1s.s.hotrodvair]

Thanks for being so thorough in your analysis!

[@DallasAutoDiag]

Thank you

[@nickayivor8432]

My Mentor Dallas Auto Diag
Thank you very much for sharing what you know with us Take care and have a great weekend with all your family around you
ACCOMPLISHED Dallas Auto Diag
From Nick Ayivor from London England UK 🇬🇧

[@DallasAutoDiag]

thanks

[@advancedleveldiagnostics]

Great Video! I don't under stand why a shorted driver in the pcm would blow the fuse, wouldn't it just cause the valve to remain open? unless the valve is shorted also?

[@DallasAutoDiag]

The valve is not shorted. Near the end ai disconnect both pcm harnesses and check for short to ground. It wasn't there.

[@advancedleveldiagnostics]

@@DallasAutoDiag So then what is blowing the fuse, how's the power getting to the shorted driver?

[@advancedleveldiagnostics]

oh just realized Its probably never a full ground must be PWM or something like that, and the amps of a full ground is to many.

[@DallasAutoDiag]

@@advancedleveldiagnostics fuse holder had one side power and other side ground. Ground side should not be ground.

[@advancedleveldiagnostics]

@@DallasAutoDiag with the pcm disconnected you still saw ground on the other side of fuse? Anyways ground has to be coming from pcm going thru the valve.

[@doncookbc]

Thank you very Much !!!

[@DallasAutoDiag]

Thanks

[@ebrahimsadeghi5883]

Awesome 👏

[@DallasAutoDiag]

Thanks

[@danman9017]

good one thanks

[@DallasAutoDiag]

Thanks Dan

[@k.mohammadmifthahulislamzi7330]

What Was the problem customer Facing with this Truck
before you diagnosing??? 💚💚

[@DallasAutoDiag]

it doesn't crank

[@ronkarns5368]

Did you not notice that each component has resistance just built into it the way you tested it is completely wrong

[@DallasAutoDiag]

Can you specify which part of the video and elaborate more?

[@prashanshan7125]

Hi because ECU was providing constant gnd to that value. wasn't that valve burnt..?

[@DallasAutoDiag]

I don't think so because the fuse was the protection of the circuit

[@prashanshan7125]

@@DallasAutoDiag oh forgot about the fuse..

[@philh9238]

Cut the wire at the pcm to see if it’s pcm or valve

[@DallasAutoDiag]

I should have done that. Just did not want to show bad practice on camera.

[@nickayivor8432]

Questions time what do you call SUBSTANTIAL AND PROFICIENT AND PRODIGY AND INTELLECTUAL AND ACCOMPLISHED ADD ONE MORE KNOWLEDGEABLE THE ANSWER IS
DALLAS AUTO DIAG
MY MENTOR DALLAS AUTO DIAG
👍
From Nick Ayivor from London England UK 🇬🇧

[@DallasAutoDiag]

I don't deserve all that. thanks mate

[@gazmendhajra1957]

old truck wiers hanging. One problem down few more to go once driven.

[@DallasAutoDiag]

Agree

[@doncookbc]

what kind of tester is that the one that screams lol

[@DallasAutoDiag]

Power probe