S40 V40: - V40 rear fog light not working

Martinw · Jan 22nd, 2011, 12:48

Help! My 1999 v40 has just failed it's mot on rear fog light not working! An easy fix I thought! Checked obvious, lamp, fuse etc. Unable to check contiuity as cannot trace wiring. Unable to find wiring diagram, and the switch doesn't make much sense. Has anyone got any clues. Thanks

RUTV70 · Jan 22nd, 2011, 13:32

Did you actually replace/change the bulb.??...and/or check the contacts of the one that's in..and the holder that it sits in.?
It can very often be a simple "corrosion" issue

Neil

Martinw · Jan 22nd, 2011, 15:08

Thanks Neil, no voltage to holder at all! Just found wiring diagram on line, trying continuity now if that's ok, I'm guessing its something in CEM! getting cold now, can't feel my fingers!!

Martinw · Jan 23rd, 2011, 14:40

Fault traced to CEM! Bypassed CEM with new wiring and switch, hey presto. cheaper than replacement CEM.

Jan 22nd, 2011, 12:48	#1
Martinw New Member Last Online: Jan 15th, 2012 11:03 Join Date: Jan 2011 Location: Hastings	V40 rear fog light not working Help! My 1999 v40 has just failed it's mot on rear fog light not working! An easy fix I thought! Checked obvious, lamp, fuse etc. Unable to check contiuity as cannot trace wiring. Unable to find wiring diagram, and the switch doesn't make much sense. Has anyone got any clues. Thanks

Jan 22nd, 2011, 13:32	#2
RUTV70 RUTRUNNER Last Online: Jan 25th, 2016 11:32 Join Date: Nov 2009 Location: Oakham View Photos By: RUTV70	Did you actually replace/change the bulb.??...and/or check the contacts of the one that's in..and the holder that it sits in.? It can very often be a simple "corrosion" issue Neil __________________ classic V70 1999MY 20 valve non turbo, auto (adaptive) B5254. ETM/Denso Previous Volvos...264 auto...loved it. 340 manual...not so loved. 760 auto...loved it. Last edited by RUTV70; Jan 22nd, 2011 at 13:37.

Jan 22nd, 2011, 15:08	#3
Martinw New Member Last Online: Jan 15th, 2012 11:03 Join Date: Jan 2011 Location: Hastings	Thanks Neil, no voltage to holder at all! Just found wiring diagram on line, trying continuity now if that's ok, I'm guessing its something in CEM! getting cold now, can't feel my fingers!!

Jan 23rd, 2011, 14:40	#4
Martinw New Member Last Online: Jan 15th, 2012 11:03 Join Date: Jan 2011 Location: Hastings	Fault traced to CEM! Bypassed CEM with new wiring and switch, hey presto. cheaper than replacement CEM.

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