Cruise retrofit disaster...... - Page 2

CDTi · 12th July 2008, 12:51

Can you put a temporary short on the wires to see if the CC light will activate on the dash?

No point in sourcing a new switch if its not faulty.

FROGGY · 12th July 2008, 12:57

Thanks CDTI. Thought about that but there is no room to manoeuvre anything up there, hence my question about dash removal being necessary.
Mick

CDTi · 12th July 2008, 13:10

Quote:

Originally Posted by FROGGY

Thanks CDTI. Thought about that but there is no room to manoeuvre anything up there, hence my question about dash removal being necessary.
Mick

Hmmm....right.

Do you have a copy of RAVE? I just had a brief look and it looks like fuse 13 in the footwell fusebox feeds the pedal switches. Have you checked this?

I haven't got time now but if you want me to look up more of the CC stuff on RAVE, I'll do it later on this evening.

FROGGY · 12th July 2008, 13:26

CDTI
Does the fuse feed both switches, because the brake lights work OK?
Also, when I put my thinking cap on the right way round, operating the clutch allows the switch to open, so if the switch is stuck in, then in theory the cruise should work OK because as far as it is concerned, the clutch is not operated.
Or does the ECU need to see a change in condition at some point before it will allow cruise to function?
Mick

Mike · 12th July 2008, 14:15

Quote:

Originally Posted by FROGGY

CDTI
Does the fuse feed both switches, because the brake lights work OK?
Also, when I put my thinking cap on the right way round, operating the clutch allows the switch to open, so if the switch is stuck in, then in theory the cruise should work OK because as far as it is concerned, the clutch is not operated.
Or does the ECU need to see a change in condition at some point before it will allow cruise to function?
Mick

Yes the fuse feeds both pedal switches, plus the LSM and a few others so is unlikely to be your problem - also on your car, (non-facelift?) it could be fuse 7, a 5 amp one.

On the switch position iirc, when the switch is stuck in, or knackered, then it won't work as you describe. Previous experience on here says that when stuck in it 'fails' so cruise goes non-operative.

If you want to pm me an email address I can send you the full CDTi cruise system description pages from the Workshop Manual

hth

newk · 12th July 2008, 15:15

this might sound silly but make sure your foot is not resting on the clutch pedal , its enough for it not to work

FROGGY · 12th July 2008, 15:37

Nothing to lose so "switch?" out.
Pics attached (I hope).

http://s200.photobucket.com/albums/a...le_011/Switch/

Not a switch!
BMW part number.
Anyone know what it is? Is it the mounting for a switch?
Could be a long job this...........

Mick

rt2 · 12th July 2008, 16:30

Quote:

Originally Posted by FROGGY

Nothing to lose so "switch?" out.
Pics attached (I hope).

http://s200.photobucket.com/albums/a...le_011/Switch/

Not a switch!
BMW part number.
Anyone know what it is? Is it the mounting for a switch?
Could be a long job this...........

Mick

Mick,

The clutch should have a double pole switch Rover part no XKD000090.

I doubt if the car was fitted with the switch if cruise was not specified at time of buying, think about it 1000 cars without switch at 20 pounds each £20000 saving in production costs.

I set of contacts clutch engaged & vice versa.

FROGGY · 12th July 2008, 17:28

Still cost them to fit whatever I've got though..........
Attaching images the correct way this time.

There is another number on it but I can't find a microscope!

Mick

Mike · 12th July 2008, 17:58

That BMW part number is for a 'stop light switch' for a 1990's E46 3 Series, so same time as the 75. It's definitely not a cruise pedal switch.

12th July 2008, 12:51	#11
CDTi This is my second home No longer in the MGR club Join Date: Nov 2006 Location: Tipperary Posts: 3,933 Thanks: 35 Thanked 51 Times in 35 Posts	Can you put a temporary short on the wires to see if the CC light will activate on the dash? No point in sourcing a new switch if its not faulty. __________________ 'Tis better to be silent and be thought a fool, than to speak and remove all doubt.

12th July 2008, 12:57	#12
FROGGY I really should get out more....... MG ZT CDTI Join Date: Sep 2007 Location: 17500 REAUX, CHARENTE-MARITIME Posts: 2,749 Thanks: 2 Thanked 133 Times in 90 Posts	Thanks CDTI. Thought about that but there is no room to manoeuvre anything up there, hence my question about dash removal being necessary. Mick __________________ http://i200.photobucket.com/albums/a...ps628d4119.jpg IN THE BLACK NOW

12th July 2008, 13:26	#14
FROGGY I really should get out more....... MG ZT CDTI Join Date: Sep 2007 Location: 17500 REAUX, CHARENTE-MARITIME Posts: 2,749 Thanks: 2 Thanked 133 Times in 90 Posts	CDTI Does the fuse feed both switches, because the brake lights work OK? Also, when I put my thinking cap on the right way round, operating the clutch allows the switch to open, so if the switch is stuck in, then in theory the cruise should work OK because as far as it is concerned, the clutch is not operated. Or does the ECU need to see a change in condition at some point before it will allow cruise to function? Mick __________________ http://i200.photobucket.com/albums/a...ps628d4119.jpg IN THE BLACK NOW

12th July 2008, 15:15	#16
newk Regular poster mg zt cdti +135 Join Date: Apr 2007 Location: coventry Posts: 37 Thanks: 0 Thanked 0 Times in 0 Posts	this might sound silly but make sure your foot is not resting on the clutch pedal , its enough for it not to work __________________ dont need a fast car [SIGPIC][/SIGPIC]

12th July 2008, 15:37	#17
FROGGY I really should get out more....... MG ZT CDTI Join Date: Sep 2007 Location: 17500 REAUX, CHARENTE-MARITIME Posts: 2,749 Thanks: 2 Thanked 133 Times in 90 Posts	Nothing to lose so "switch?" out. Pics attached (I hope). http://s200.photobucket.com/albums/a...le_011/Switch/ Not a switch! BMW part number. Anyone know what it is? Is it the mounting for a switch? Could be a long job this........... Mick __________________ http://i200.photobucket.com/albums/a...ps628d4119.jpg IN THE BLACK NOW

12th July 2008, 17:28	#19
FROGGY I really should get out more....... MG ZT CDTI Join Date: Sep 2007 Location: 17500 REAUX, CHARENTE-MARITIME Posts: 2,749 Thanks: 2 Thanked 133 Times in 90 Posts	Still cost them to fit whatever I've got though.......... Attaching images the correct way this time. There is another number on it but I can't find a microscope! Mick __________________ http://i200.photobucket.com/albums/a...ps628d4119.jpg IN THE BLACK NOW

12th July 2008, 17:58	#20
Mike This is my second home Rover 75 V8 Join Date: Oct 2006 Posts: 3,448 Thanks: 0 Thanked 206 Times in 32 Posts	That BMW part number is for a 'stop light switch' for a 1990's E46 3 Series, so same time as the 75. It's definitely not a cruise pedal switch. __________________ Mike [SIGPIC][/SIGPIC]