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Seat Leon 2.0 TDi 2007 - Code 01668 Glow plug control module (J179) implausible signal #

Posted by Mohamed Vaheed on December 9, 2014, 9:58 pm

Year of Manufacture *: 2007
Engine Size and Code *: 2000 TDI ENGINE CODE BMN
( Optional ) Scanner Used: SNAP ON SOLUS
( Optional) Fault Codes: 01668 GLOW PLUG CONTROL MODULE (J179)

FAULT CODE
01668 GLOW PLUG CONTROL MODULE (J179) IMPLAUSIBLE SIGNAL P0684 SHORT WITH GROUND

THIS CAR CAME IN WITH ENGINE MANGEMENT LIGHT ON ORIGINALLY IT CODE FAULT CODES STORED FOR 2 FAULTY GLOW PLUGS AND THIS ABOVE CODE SO FITTED 4 NEW GLOW PLUGS BUT 2 WERE FAULTY, RESET CLEAR CODES BUT THIS CODE CAME BACK TRIED TO CROSS REF THE J179 BUT CAN'T GET ANY CORRECT TEST OR FAULT FOR IT.

PLEASE WONDERING IF ANY BODY ELSE HAS HAD SAME PROBLEM

THANKS

Re: SEAT LEON 2.0 TDI FR

Posted by Kevin Apps <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT2589' width='330' height='300' border=0 style='border:none;'> on December 10, 2014, 12:21 am, in reply to "SEAT LEON 2.0 TDI FR"
Kevin Apps

vaheed

From the posting guide.

DO NOT use Text Language or post in UPPER CASE.

Kev.

Re: SEAT LEON 2.0 TDI FR

Posted by Shane gray <iframe src='https://members.boardhost.com/ukautotalk8/info/user=ukat3442' width='330' height='300' border=0 style='border:none;'> on December 10, 2014, 8:13 pm, in reply to "Re: SEAT LEON 2.0 TDI FR"
Shane Gray

Vaheed surly this should be a simple diagnoses, find the glow plug module and test all wiring.
Shane

Re: SEAT LEON 2.0 TDI FR

Posted by Jon Morgan <iframe src='https://members.boardhost.com/ukautotalk8/info/user=ukat3190' width='330' height='300' border=0 style='border:none;'> on December 10, 2014, 10:12 pm, in reply to "Re: SEAT LEON 2.0 TDI FR"

"Vaheed surly this should be a simple diagnoses, find the glow plug module and test all wiring.
Shane"

EASIER SAID THAN DONE SHANE, THE GLOW PLUG RELAY ON THESE IS FITTED INSIDE THE E-BOX IN THE ENGINE BAY.

ACCESSING IT OFF MEMORY INVOLVES BATTERY REMOVAL, & SEPARATING THE 2 X HALVES OF THE UNDERBONNET RELAY PLATE, LEAVING WITH YOU WITH AN INTERESTING DILEMMA IN TESTING UNDER LOAD ETC....

Re: SEAT LEON 2.0 TDI FR

Posted by SHANE GRAY <iframe src='https://members.boardhost.com/ukautotalk8/info/user=ukat3442' width='330' height='300' border=0 style='border:none;'> on December 11, 2014, 9:51 am, in reply to "Re: SEAT LEON 2.0 TDI FR"
Shane Gray

Hi again,
Just looked up location on Autodata and it looks like it is integrated into the under bonnet fusebox. There is a good wiring diagram on AD so shouldn't be to bad to check wiring and fuses.
Give me your private e-mail and I will send diagram.
Shane

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