Go Back   The 75 and ZT Owners Club Forums > The 75 and ZT Owners Club Forums > Technical Help Forum
Register FAQ Image Gallery Members List Calendar Mark Forums Read
Notices

Reply
 
Thread Tools Display Modes
Old 15th December 2011, 04:50   #1
john adam
Avid contributor
 
1999 Rover 75 2.5 Connoisseur saloon

Join Date: May 2007
Location: Carterton, NZ
Posts: 106
Thanks: 18
Thanked 3 Times in 3 Posts
Default Indicator wiring

Greetings to you all from the antipodes. My 75 V6 Connoiseur has failed its 6 monthly warrant of fitness because the left hand repeater indicator light has failed. A new bulb did not solve the problem. No power at the terminal! Can someone tell me where the wires to this light come from?
john adam is offline   Reply With Quote
Old 15th December 2011, 08:01   #2
SD1too
Doesn't do things by halves
 
SD1too's Avatar
 
Rover 75 2.5 Connoisseur Auto (1999) Dealer launch model.

Join Date: Mar 2007
Location: Former Middlesex
Posts: 20,263
Thanks: 1,587
Thanked 3,749 Times in 3,181 Posts
Default

Hello John,

The green/orange is the supply from the lighting switch module and the black goes directly to an earthing point.

Is the bulb holder exposed to water to some degree? If so, I'd look there first. With reference to the circuit, if the other left-hand direction indicators are working I don't see how it can be a fuse or the earthing point which is shared.

Simon.
__________________
"Whatever is rightly done, however humble, is noble."
Sir Henry Royce.
SD1too is offline   Reply With Quote
Old 15th December 2011, 08:32   #3
chris_h
Avid contributor
 
rover 75 tourer

Join Date: Mar 2008
Location: liphook
Posts: 184
Thanks: 0
Thanked 7 Times in 7 Posts
Default

It could be a short on the wiring or a problem with the LCM. You can check for a short by unpluging the connector at the back of the LCM and ringing the pin out to earth. There are no fuses in the circuit, if tut LCM detects a short it powers down that circuit. It would be useful if it indicated that it had detected a short when it did this but it doesn't. You can check the LCM is operating correctly by checking the pin out,on the socket with a meter. The most likely cause is a short on the wiring. I had this on my headlight. If it is the LCM they are not cheap and are coded to the car and only new ones can be fitted which are encoded.
chris_h is offline   Reply With Quote
Old 15th December 2011, 09:25   #4
john adam
Avid contributor
 
1999 Rover 75 2.5 Connoisseur saloon

Join Date: May 2007
Location: Carterton, NZ
Posts: 106
Thanks: 18
Thanked 3 Times in 3 Posts
Default

Hello again and thanks for the prompt responses. Where is the lighting switch module and is the LCM the same thing. An amazingly valuable forum.
john adam is offline   Reply With Quote
Old 15th December 2011, 09:41   #5
HarryM1BYT
This is my second home
 
HarryM1BYT's Avatar
 
75 Contemporary SE Mk II 2004 Man. Sal. CDTi 135ps, FBH on red diesel, WinCE6 DD

Join Date: May 2010
Location: Leeds
Posts: 17,273
Thanks: 2,160
Thanked 2,061 Times in 1,586 Posts
Default

Quote:
Originally Posted by john adam View Post
Hello again and thanks for the prompt responses. Where is the lighting switch module and is the LCM the same thing. An amazingly valuable forum.
The LSM is directly behind and a part of, the lighting switch - the switch you use to turn the headlights on. Its an ECU - the 'switches' tell it what you want it to do and the ECU carries out the instruction.
__________________
Harry

How To's and items I offer for free, or just to cover the cost of my expenses...

http://www.the75andztclub.co.uk/foru...40#post1764540

Fix a poor handbrake; DIY ABS diagnostic unit; Loan of the spanner needed to change the CDT belts; free OBD diagnostics +MAF; Correct Bosch MAF cheap; DVB-T install in an ex-hi-line system; DD install with a HK amp; FBH servicing.

I've taken a vow of poverty. To annoy me, send money.
HarryM1BYT is offline   Reply With Quote
Old 18th December 2011, 19:35   #6
john adam
Avid contributor
 
1999 Rover 75 2.5 Connoisseur saloon

Join Date: May 2007
Location: Carterton, NZ
Posts: 106
Thanks: 18
Thanked 3 Times in 3 Posts
Smile

Hello again, finally found the problem after removing the plastic liner under the mudguard. After removing the cloth braid the live wire looked like it had been attacked by some wee animal. Fotunately there was approx 50mm of well insulated wire left before it entered the main wiring loom. Soldered on a new length of wire wrapped it in plastic tubing and insulating tape and all now tickety boo. Panic over, thanks for the advice.
john adam is offline   Reply With Quote
Reply

Thread Tools
Display Modes

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 11:46.


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