Fuel pump relay?

AUXIERGINGER

MEMBER
2012 VOLKSWAGEN PASSAT
6 CYL
2WD
AUTOMATIC
10,000 MILES

I have tracked a non starting issue to the fuel pump or fuel pump relay. I cannot however locate the relay in question.

Wednesday, April 19th, 2017 AT 6:51 PM

12 Replies

STEVE W.

MECHANIC
13,489 POSTS

It uses a fuel pump control module tucked up by the fuel tank. It does not turn the pump on/off like a relay. Instead it controls fuel pressure by rapidly pulsing the power to the pump in response to the ECMs commands. The ECM uses the sensors and fuel pressure sensor to determine the pressure needed. To test them you need a good scan tool to command the pump to certain pressures as you run the tests. You will also need to program the replacement module (if it tests faulty) so it matches the engine/vehicle.

Here is a guide to help you test the relay with diagrams below to show you the location

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.

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Wednesday, April 19th, 2017 AT 7:45 PM

AUXIERGINGER

MEMBER
2 POSTS
2012 VOLKSWAGEN PASSAT
2WD
AUTOMATIC
10,000 MILES

I cannot locate the fuel pump relay.

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Thursday, August 27th, 2020 AT 12:28 PM (Merged)

CARADIODOC

MECHANIC
33,879 POSTS

On "upper relay carrier on vehicle electrical system control module".

This is listed as "attached to the instrument panel central tube, and can not be removed without removing the instrument panel. The individual relay sockets can be removed without having to remove the relay panel".

Sorry that I cannot find a picture, and that the engineers found such an effective way to make troubleshooting a miserable experience. I knew there was a reason I do not work on VW's.

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Thursday, August 27th, 2020 AT 12:28 PM (Merged)

DEE GREEN

MEMBER
2 POSTS
2004 VOLKSWAGEN PASSAT
1.8L
V6
2WD
AUTOMATIC
150,000 MILES

Okay, now my fuel pump went out. I did all the steps as far as replacing the relay then the fuel pump start it up and ran for a day went to the store shut the car off now it will not start. What do I do now?

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Thursday, August 27th, 2020 AT 12:28 PM (Merged)

AL514

MECHANIC
4,699 POSTS

Hello, thanks for using 2CarPros.com. You are going to want to do a fuel pressure test to see what is really going on with that pump. If you have no fuel pressure, you are going to have to do some electrical testing to see if it is the relay or the pump itself.

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

https://www.2carpros.com/articles/how-to-check-wiring

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Thursday, August 27th, 2020 AT 12:28 PM (Merged)

AWKADIR

MEMBER
1 POST
2002 VOLKSWAGEN PASSAT
1.8L
4 CYL
TURBO
2WD
AUTOMATIC
175,000 MILES

I have a Bad fuel pump or relay, how do I easily check? I want to check relay, but don't know where it is. Where is relay on this car?
I have a Bad fuel pump or relay, how do I easily check? I want to check relay, but don't know where it is. Where is relay on this car?

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Thursday, August 27th, 2020 AT 12:28 PM (Merged)

EXOVCDS

MECHANIC
1,883 POSTS

Happy New Year!

Have a look at the attached image. Pull the relay and look at the circuit
diagram on the side of it. You will want to bridge slot 30 and 87 in the
relay socket to activate the pump.

Thomas

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Thursday, August 27th, 2020 AT 12:28 PM (Merged)

BAGSTER

MEMBER
2 POSTS
2002 VOLKSWAGEN PASSAT
4 CYL
FWD
AUTOMATIC
82,000 MILES

I have a wagon 2002 month 6 I turn the key to start it and the shift light wont stay on and the car will not start. It turns over fine. The fuel pump does not turn on no whining or noise.
I checked the fuel pump and is works when I apply current to it. I have been unable to locate the relay and the dealer is unable to supply a relay that matches any I have under the dash.
I have another car exactly like it only a 2003 when I turn the key on the shift light goes on and stays on. This is the foot llight on the shift console next to the handle. I turn the key on the 2002 and it blinks on then off I also hear a click from the relay inside the console. What is causing this?

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Thursday, August 27th, 2020 AT 12:28 PM (Merged)

DOCFIXIT

MECHANIC
18,828 POSTS

Hi
Fuel pump relay in panel under left side dash see diagram

See no relay in console is there a part number
Shift light off trans in emergency running with a malfunctioning control module.
Hope this helps
Thanks for donate

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Thursday, August 27th, 2020 AT 12:28 PM (Merged)

BAGSTER

MEMBER
2 POSTS

That is not the panel in my car
The fule pump relay is close but not the same
Part no 1J0 906 383B does not fiit there are 2 less connectors on mine and the power feeds are smaller connectors.
There is nothing in bank 4 on my car
The missing relay is pictured

Where is the malfuntioning control module located for the transmission light?

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Thursday, August 27th, 2020 AT 12:28 PM (Merged)

SILVIASLIDER

MEMBER
1 POST
1995 VOLKSWAGEN PASSAT

Engine Mechanical problem
1995 Volkswagen Passat 6 cyl Front Wheel Drive Automatic

my passat wasnt getting fuel, so I replaced the fuel pump. It did fix it, the pump wont pump at all. I was wondering if maybe there is a relay switch or somthing. If not what could the problem be.

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Thursday, August 27th, 2020 AT 12:28 PM (Merged)

RASMATAZ