Go Back   The 75 and ZT Owners Club Forums > The 75 and ZT Owners Club Forums > The 75 and ZT Owners Club General Forum
Register FAQ Image Gallery Members List Calendar
Notices

Reply
 
Thread Tools Display Modes
Old 10th May 2017, 22:51   #11
BigRuss
Premium Trader
 
BigRuss's Avatar
 
75 CDT Tourer,2.5 Launch Saloon, Omipro MG/Rover (T4)

Join Date: Jul 2007
Location: Liversedge, West Yorkshire
Posts: 5,405
Thanks: 1,105
Thanked 1,340 Times in 661 Posts
Default

I'd remove the "earth" wire from the led lights that are fitted

I've lost count of the times I've come across extras that have been fitted have caused problems. You can't always add stuff where you think, adding an earth or taking power from a circuit can cause a whole host of problems !

Russ
__________________


Replacement Key Service
http://https://the75andztclub.co.uk/...d.php?t=244732
Full T4 Testbook diagnostics available.
Diesel ECU repair and replacement.
Options enabled or disabled as required.
Diesel X-Power 135 and 160bhp, Rover 1.8T 150 to 160
MG 160 V6 to 177 upgrades available
P.M. for details.
BigRuss is offline   Reply With Quote
Old 10th May 2017, 23:02   #12
Geoff130
Loves to post
 
Geoff130's Avatar
 
MG ZT 190, Rover 75 CDTi, Honda VFR 750, Honda CB550F

Join Date: Aug 2010
Location: Derby
Posts: 393
Thanks: 75
Thanked 36 Times in 28 Posts
Default

When you say they work off a battery is that just to the motors or through a switch pack. Like the rear sunblind the switch packs rely on current sensing to tell when to stop the motor. If it's drawing too much current the switch will think it's at the end of it's travel and switch off but direct connection to a battery will move it ok.
Geoff130 is offline   Reply With Quote
Old 11th May 2017, 10:25   #13
klarzy
This is my second home
 
none but not gone

Join Date: Mar 2013
Location: March, Cambs
Posts: 16,437
Thanks: 894
Thanked 4,247 Times in 3,025 Posts
Default

Quote:
Originally Posted by BigRuss View Post
I'd remove the "earth" wire from the led lights that are fitted

I've lost count of the times I've come across extras that have been fitted have caused problems. You can't always add stuff where you think, adding an earth or taking power from a circuit can cause a whole host of problems !

Russ
IIRC Russ the power for the marmite mood lighting in the doors was taken from the switch pack...
__________________
[SIGPIC][/SIGPIC]….All praise Bananaswan….
klarzy is offline   Reply With Quote
Old 11th May 2017, 11:31   #14
BigRuss
Premium Trader
 
BigRuss's Avatar
 
75 CDT Tourer,2.5 Launch Saloon, Omipro MG/Rover (T4)

Join Date: Jul 2007
Location: Liversedge, West Yorkshire
Posts: 5,405
Thanks: 1,105
Thanked 1,340 Times in 661 Posts
Default

Quote:
Originally Posted by klarzy View Post
IIRC Russ the power for the marmite mood lighting in the doors was taken from the switch pack...
Exactly and that's where I'd start

Russ
__________________


Replacement Key Service
http://https://the75andztclub.co.uk/...d.php?t=244732
Full T4 Testbook diagnostics available.
Diesel ECU repair and replacement.
Options enabled or disabled as required.
Diesel X-Power 135 and 160bhp, Rover 1.8T 150 to 160
MG 160 V6 to 177 upgrades available
P.M. for details.
BigRuss is offline   Reply With Quote
Old 11th May 2017, 21:07   #15
Rick-sta
This is my second home
 
Rick-sta's Avatar
 
MG ZT 2.0 CDTI+ in Typhoon, MG TF 135 in Typhoon & Rover 75 Connoisseur CDTI SE in Pearl Black

Join Date: Oct 2012
Location: Norfolk
Posts: 7,534
Thanks: 2,718
Thanked 2,827 Times in 1,462 Posts
Default solved

I'd already tried disconnecting the led light in the door card and it wasn't that, didn't think it would be anyway as I have the same set up in my ZT which also has powerfolds which work fine

Finally found what the problem was today. I used a spare white plug I have for the driver's window switches and wired it directly to the battery in order to test it and the powerfolds worked fine with the switch. Which mean't the fault lied somewhere in the car side of the wiring loom, and not on the door.

Looking at the diagrams there are 2 12v feeds which go into the driver's window switches, the green white to pin 3, and the orange green wire to pin 6. Turns out the orange and green wire is there to only power the powerfolds (whereas I thought it powered other things too), which I thought was a bit odd that they included the 12v powerfold wiring in the standard loom but didn't include the rest of it which goes to the mirrors.

So to test if there's any power coming through the wire I connected up an LED bulb to the orange/green wire for the powerfolds and found no power. However whilst checking the wires I noticed that if I move the wires going into the door loom plug on the car side, the bulb would come on.

Well I ended up taking the door off to get to the plug properly, and after unplugging it this is what I found.





The pin inside the plug for the powerfolds had burnt and come off completely. This explains why Dennis (the owner) kept finding that the powerfolds would stop working and then start working again later.

I've now bypassed the plug and wired the two ends directly and everything is working fine.

No idea why it's done that. Nothing extra has been wired to the orange/green wiring for the powerfolds. The only extra thing added is 1 tiny led in the door card which is part of the sidelight circuit (red/white wire).

But all sorted now, after many hours trying to track down the fault. wasn't willing to let it beat me spent about 4-5 hours on it over about 3 days though!
__________________
How to retrofit Cruise Control on a diesel with no OEM wiring in place: Link
How to retrofit heated electric memory seats with no OEM wiring in place: Link
How to operate FBH and ATC via text Link
How to restore cloudy projector headlights Link

Last edited by Rick-sta; 11th May 2017 at 21:54..
Rick-sta is offline   Reply With Quote
Old 11th May 2017, 21:39   #16
klarzy
This is my second home
 
none but not gone

Join Date: Mar 2013
Location: March, Cambs
Posts: 16,437
Thanks: 894
Thanked 4,247 Times in 3,025 Posts
Default

I do remember Dennis saying it kept blowing fuses...
Perhaps this burned pin is the result of an over rated fuse being used ????

Be careful that the system is still not in overload for some reason and I would make sure the fuse is the correct rating for safety... don't want her getting too hot...
__________________
[SIGPIC][/SIGPIC]….All praise Bananaswan….
klarzy is offline   Reply With Quote
Old 11th May 2017, 21:53   #17
Rick-sta
This is my second home
 
Rick-sta's Avatar
 
MG ZT 2.0 CDTI+ in Typhoon, MG TF 135 in Typhoon & Rover 75 Connoisseur CDTI SE in Pearl Black

Join Date: Oct 2012
Location: Norfolk
Posts: 7,534
Thanks: 2,718
Thanked 2,827 Times in 1,462 Posts
Default

Quote:
Originally Posted by klarzy View Post
I do remember Dennis saying it kept blowing fuses...
Perhaps this burned pin is the result of an over rated fuse being used ????

Be careful that the system is still not in overload for some reason and I would make sure the fuse is the correct rating for safety... don't want her getting too hot...
It did have the wrong fuse in it, according to my Rave diagram the Green/Orange wire comes from fuse slot 34 and that is suppose to have a 5amp fuse in it, but when I checked it had a 10 amp fuse. So have swapped it for a 5amp now. May be the reason for it
__________________
How to retrofit Cruise Control on a diesel with no OEM wiring in place: Link
How to retrofit heated electric memory seats with no OEM wiring in place: Link
How to operate FBH and ATC via text Link
How to restore cloudy projector headlights Link
Rick-sta is offline   Reply With Quote
Reply


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT. The time now is 01:14.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright © 2006-2023, The Rover 75 & MG ZT Owners Club Ltd