Another Boot Lid won’t open question

benrpatterson · Apr 14th, 2019, 20:05

Hi all,

S40, 2007.

I changed the wiring loom in the boot about 5 years ago when the boot wouldn’t open...

Here I am again, I guess the same problem... but as it’s only 5 years old, I’m wondering if it could be the micro switch instead?

The removal and reconnecting of the connector in the micro switch and also the connection of the loom under he parcel shelf does not open the boot... does that suggest it’s not the loom or the microswitch?!

Both number plate lights are not working either.

Thanks all
Ben

hoks · Apr 14th, 2019, 22:46

Hey

Have not experienced problems with wiring loom, but had problems with boot switch.. A while before it died it had to be pressed quite hard to work, and after that for last week before compete failure it worked intermittantly.

Also have experienced nuber plate connection corrosion which stopped them from working.

Have you checked if you get voltage at all to the lights? Maybe it could be some fuse..

5 years for a wiring loom seems a bit short life span for me, if it indeed is the wiring, I would dig deeper to find out why it died...

benrpatterson · May 13th, 2019, 14:32

Hi all,

Yesterday I stripped the wiring loom out and indeed there are three snapped wires, and one almost gone.

Question is... how can I tell which wires should connect back together?

I cant see any numbers on the wires, and they are all black!

Is there any way to figure that out?

Thanks
Ben

SwissXC90 · May 13th, 2019, 16:59

A wiring diagram is the only way. And access to both ends of the loom, with a multimeter to measure

Otherwise, use a wiring diagram and a multimeter and switch on the various circuits one at a time to find which wire does what.

benrpatterson · May 13th, 2019, 17:01

Quote:

Originally Posted by SwissXC90

A wiring diagram is the only way. And access to both ends of the loom, with a multimeter to measure

Otherwise, use a wiring diagram and a multimeter and switch on the various circuits one at a time to find which wire does what.

Thanks Swiss, I did have a google for a wiring diagram, but couldn't find anything concrete!

benrpatterson · May 14th, 2019, 08:11

https://www.manualslib.com/manual/53...age=154#manual

Will have a go

Apr 14th, 2019, 20:05	#1
benrpatterson Junior Member Last Online: Apr 20th, 2022 20:58 Join Date: Mar 2015 Location: Cardiff	Another Boot Lid won’t open question Hi all, S40, 2007. I changed the wiring loom in the boot about 5 years ago when the boot wouldn’t open... Here I am again, I guess the same problem... but as it’s only 5 years old, I’m wondering if it could be the micro switch instead? The removal and reconnecting of the connector in the micro switch and also the connection of the loom under he parcel shelf does not open the boot... does that suggest it’s not the loom or the microswitch?! Both number plate lights are not working either. Thanks all Ben

May 13th, 2019, 14:32	#3
benrpatterson Junior Member Last Online: Apr 20th, 2022 20:58 Join Date: Mar 2015 Location: Cardiff	wiring loom... Hi all, Yesterday I stripped the wiring loom out and indeed there are three snapped wires, and one almost gone. Question is... how can I tell which wires should connect back together? I cant see any numbers on the wires, and they are all black! Is there any way to figure that out? Thanks Ben

May 13th, 2019, 16:59	#4
SwissXC90 Premier Member Last Online: Mar 20th, 2024 18:26 Join Date: Jan 2016 Location: Cross Country	A wiring diagram is the only way. And access to both ends of the loom, with a multimeter to measure Otherwise, use a wiring diagram and a multimeter and switch on the various circuits one at a time to find which wire does what. __________________ XC90 R-Design MY2009, Black Sapphire Metallic. HP-Sound, RSE, Nav, Tel, ParkingCam, BLIS, ParkingHeater, RestHeat, Removable Towbar, Summer: CRATUS 20x8 on Pirelli Scorpion Zeros 255/45, Winter: NEPTUNE 17x7 on Continental WinterContact 4x4 235/65.

May 14th, 2019, 08:11	#6
benrpatterson Junior Member Last Online: Apr 20th, 2022 20:58 Join Date: Mar 2015 Location: Cardiff	Found a diagram https://www.manualslib.com/manual/53...age=154#manual Will have a go

Apr 14th, 2019, 22:46	#2
hoks Junior Member Last Online: Oct 14th, 2019 13:54 Join Date: Feb 2018 Location: Riga	Hey Have not experienced problems with wiring loom, but had problems with boot switch.. A while before it died it had to be pressed quite hard to work, and after that for last week before compete failure it worked intermittantly. Also have experienced nuber plate connection corrosion which stopped them from working. Have you checked if you get voltage at all to the lights? Maybe it could be some fuse.. 5 years for a wiring loom seems a bit short life span for me, if it indeed is the wiring, I would dig deeper to find out why it died...

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