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I have a 2002 AUDI A6 i dont have any power at my fuel pump…

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Hi my name is *****...
Hi my name is ***** ***** have a 2002 AUDI A6 i dont have any power at my fuel pump fuse
Submitted: 2 years ago.Category: Audi
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Answered in 31 minutes by:
2/25/2016
Audi Mechanic: Wolfgang, Audi master tech replied 2 years ago
Wolfgang
Wolfgang, Audi master tech
Category: Audi
Satisfied Customers: 5,118
Experience: Senior Audi Master Tech 15 yrs
Verified

Hello there I'm Wolfgang.

I do need to know if you turn on the key does the check engine light come on in the instrument cluster?

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Customer reply replied 2 years ago
sorry for the delay no check eng. light
Audi Mechanic: Wolfgang, Audi master tech replied 2 years ago

Ok the Ecu is not getting power or the ground is not there. I do need a vin # ***** get the wiring diagram to assist.

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Customer reply replied 2 years ago
vin # *****
Audi Mechanic: Wolfgang, Audi master tech replied 2 years ago

WILLIE , was there any recent inspection of the fuses by you where you pulled them out and then reinstall them?

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Customer reply replied 2 years ago
sorry for the delay, yes and the relay to
Customer reply replied 2 years ago
I will go ahead and rate you GOOD i will get back with you monday if GOD willing have a blessed weekend
Audi Mechanic: Wolfgang, Audi master tech replied 2 years ago

you do the sme and let me know if you need any more help !! have a safe one

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Customer reply replied 2 years ago
Hi its willie last thing was did i inspect the fuse yes they all look ok and i change the relay and i check the big fues under the pcm
Audi Mechanic: Wolfgang, Audi master tech replied 2 years ago

Ok we need to check voltage and ground at the ecm

Let me get the pins to check that.

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Customer reply replied 2 years ago
get back with you tomorrow
Audi Mechanic: Wolfgang, Audi master tech replied 2 years ago

Ok

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Customer reply replied 2 years ago
Hi i was wondering if you were still going to get me the wiring dia. and the pins to check the voltage and ground i waiting allday yesterday
Audi Mechanic: Wolfgang, Audi master tech replied 2 years ago

sorry pin #21, 55,56,62 should be 12 volts

pin 1 and 2 brown wires should be ground

let me know what you have at the ecm

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Customer reply replied 2 years ago
56 no power
Audi Mechanic: Wolfgang, Audi master tech replied 2 years ago

56 is for the brake light signal so that does not matter. is your ground good? pin 1 and 2?

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Customer reply replied 2 years ago
both grounds check good
Audi Mechanic: Wolfgang, Audi master tech replied 2 years ago

did you check the ecu power supply relay?

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Customer reply replied 2 years ago
no i did not which one would that be
Customer reply replied 2 years ago
is this the one in with the pcm
Customer reply replied 2 years ago
hey i was just thinking of some things to check its not getting any fire i dont know if that means anything
Audi Mechanic: Wolfgang, Audi master tech replied 2 years ago

Yes. The Ecu controls the coils so with the check engine light not coming on like you have stated it will not fire

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Customer reply replied 2 years ago
OK so is this the relay next to the ECU or under the dash
Audi Mechanic: Wolfgang, Audi master tech replied 2 years ago

nex to the ecu

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Audi Mechanic: Wolfgang, Audi master tech replied 2 years ago

373

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Customer reply replied 2 years ago
that relay is not clicking when you turn the switch on is there another relay i can use to check it
Customer reply replied 2 years ago
if that relay does suppose to click when you turn on the switch and or crank it over what stops it from doing so, sorry for the headache but i really need to fix this car. THANKS
Audi Mechanic: Wolfgang, Audi master tech replied 2 years ago

should click and then stay energized when the key is on!!

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Customer reply replied 2 years ago
OK what will cause it not to stay energize
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Wolfgang
Wolfgang, Audi master tech
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