00476 control module for fuel pump (J538) 49-00 no communications

My mate has a 2002 AUM 1.8T Bora and keeps getting

00476 control module for fuel pump (J538) 49-00 no communications

Any ideas where to start? I can't find an answer on google etc?

Cheers
Dan

 

Any help guys?

 

Does it have any starting/running issues other than giving this code?

 

he said his fuel consumpton is a little crappy.. and sometimes it lacks power... coughs and splatters and then comes back sometimes. I have put a replacement pump in, but when I clear codes it still comes back?

Ordered a fuel pump relay to see if that will clear the code.

 

Could be a wiring issue?

Weirdly the Ross-Tech wiki doesn't list that code amongst the hundreds it has!

 

yeah thats the trouble I found... thought I was going mad... there is a lack of info about this fault on all the VW forums I can find. - hoping the relay will sort it... but would like to know for sure if this could be a the fault.

 

It can really only be wiring from ECU to relay (relay itself) or wiring from relay to pump.

 

what/ where is the control module for the fuel pump?

 

As far as I'm aware that is the fuel pump itself. (I don't have any wiring diagrams to check on)

Found this on BBA reman, but was on a Skoda 1.9D

Error Code : 00476
com Control unit of fuel pump (J538)
du Steuergert fr Kraftstoffpumpe (J538)
and Controller for Fuel Pump (J538)
More info on the error codes. Intermittent
Possible symptoms:
Reduced functionality
Possible causes:
Communications to and from (J538) faulty
Wiring and / or malfunction of aansluituigen (J538)
Possible solutions:
Check the communication to and from (J538) (Check measured value blocks
Check wiring and connections to and from (J538)
Additional info:
If this error code intermittently is you can 't ignore it as long as long as no loss of
functionality noticeable.

 

On a mk5 it seems as though the J538 is a seperate module to the pump.

http://volkswagen.workshop-manuals.com/golf-mk5/index.php?id=6463

The mk4 sections for the fuel pump on there are dead links!

 

cheers for the help mate... I will fit this relay when it arrives and see what happens..... I will have a good look at the wiring too I think.

 

On the fuseboard on top of battery are there any fuses for fuel pump? Or is the fuse in the one on RHS of dash?

On mk4 platform stuff they sometimes get an ABS code which, even if you follow the VAS (vw dealer spec tool) test plan it advises to fit an ABS control unit/motor.

All it is is a faulty fuseboard on the battery, 20-30 or so for a new one - fixed!

 

I have a may 2002 - 1.8T golf/bora diagram in front of me on the desk and the fuel pump is a J17 relay good old fashioned switched to make power type!

looking at the like GVK has given, not coming across that control module often it rings a bell - it's the one that sits on top of the fuel pump casing with helps regulate the pump - possibly duty cycling it - strange thing is I have only ever seen this on a Mk5- FSI engines(and those few polo FSI's) so why it's showing up on that ECU is beyond me! anything different with his car? does he have a module fitted on above the tank??

 

Must clarify Chris, the link is from a mk5 to save any confusion.

J17 is the relay, what is J538 on the diagram?

 

the tank is standard.. nothing out the norm. I put a pump from a 1.8t AGU Golf in to it (same part numbers) but still didn't solve it. it primes when the drivers door opens etc and starts... just has the fault and a poor MPG than when he brought it (3 months ago)

 

I was going to mention if it primes with door opening, I had a fault on a mk4 R32 once that had bad cold starting if left for a few hours or overnight, was the door switch at fault in the end. His is fine if it primes with door opening.

 

Yer I spotted that, the J538 on a mk 5 from looking at that link reminded me what it is (should be) a small module that may be Can Bus'd that controls the fuel pump possibly via a duty cycle to help regulate the pressure/flow at source

Danallkins, I'm sorry I can't be much more help it's proper baffled me why the code stored, can you get via scanning the ECM the part number.

 

J17 Fuel pump relay controller for 1J Chassis AUM engine

All Mk4 Golf 1.8Ts, fitted with M3.8.3 or ME7 ECUs, have the same J17 controller for the fuel pump as do Audi/Skoda and Seats for the same era. This is not to be confused with the J17 units found in MK1/Mk2/Mk3 era vehicles or later 2004 (MK5 etc) vehicles which are fitted with a separate J538 controller module near the gas tank.

The logical inputs and outputs of the 1J J17 controller are explained below.



The diagnostic fault is generated when the fuel pump relay output stage (S3/6) has a current draw that exceeds a calibrated threshold in the ECU map.
The recommendation is to replace the relay.