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Electrics issue- roof and wipers…?
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Onlinebigwinn
- Lifer
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Electrics issue- roof and wipers…?
I knew the project car would come with gremlins: here is the biggest so far
When roof is operated the window drop and the roof unlatches
However when the roof motor kicks in, so do the wipers???
Add to that the wipers don’t work off the column as per normal
Battery is good
Initial consensus suggests maybe some k-bus issues may be at fault
Any views/ideas?
Thx
Stuart
When roof is operated the window drop and the roof unlatches
However when the roof motor kicks in, so do the wipers???
Add to that the wipers don’t work off the column as per normal
Battery is good
Initial consensus suggests maybe some k-bus issues may be at fault
Any views/ideas?
Thx
Stuart
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Electrics issue- roof and wipers…?
Pull the fuse for the wiper and drop the top. If the wiper's go on without a fuse, the wiper's have another power supply, as well as a new on/off. Generally, something like this involves the k-bus
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Onlinebigwinn
- Lifer
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Electrics issue- roof and wipers…?
Good shout
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- enuff_zed
- Lifer
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Electrics issue- roof and wipers…?
Unlikely but if you have a spare GM5 then swap it to eliminate that.
Are you able to do a code scan yet?
Are you able to do a code scan yet?
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Onlinebigwinn
- Lifer
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Electrics issue- roof and wipers…?
I reckon this weekend once all the abs circuits are back together
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Onlinebigwinn
- Lifer
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Electrics issue- roof and wipers…?
Had a quick play
Swapped the roof motor to check it’s not that at fault- same fault persists. The motor sounds like it’s labouring from low current as it’s turning but very slowly as the wipers move
Pulled all the fuses to the wipers- pressed the button and the problem is still the same!
Also lots of relay clicks from the dashboard while the wipers are running
I guess I need to pull a few relays next
Swapped the roof motor to check it’s not that at fault- same fault persists. The motor sounds like it’s labouring from low current as it’s turning but very slowly as the wipers move
Pulled all the fuses to the wipers- pressed the button and the problem is still the same!
Also lots of relay clicks from the dashboard while the wipers are running
I guess I need to pull a few relays next
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- enuff_zed
- Lifer
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Electrics issue- roof and wipers…?
Unplug the wiper motor? Won't fix anything but at least then you'll see if the roof motor runs properly.
I'm guessing a weird earth somewhere.
I'm guessing a weird earth somewhere.
- enuff_zed
- Lifer
- Posts: 15066
- Joined: Wed Oct 26, 2016 11:05 am
- Location: Attleborough, Norfolk
Electrics issue- roof and wipers…?
Looking at NewTIS I still think it may be something wrong in the GM5.
Whilst it doesn't really interact with the roof module, I know the roof won't move if the windows aren't reset, so there is a tenuous link there.
Whilst it doesn't really interact with the roof module, I know the roof won't move if the windows aren't reset, so there is a tenuous link there.
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Onlinebigwinn
- Lifer
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Electrics issue- roof and wipers…?
I have to say I am feeling the same...
The relays that control the roof up/down are buzzing like hell when the wipers activate... and the only common function linking the two is GM5...
The relays that control the roof up/down are buzzing like hell when the wipers activate... and the only common function linking the two is GM5...
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- Lifer
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Electrics issue- roof and wipers…?
Check the pins on the loom, you know what a faff that module is to unplug.
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Onlinebigwinn
- Lifer
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Electrics issue- roof and wipers…?
Barry (parts master south west region) is sending me a 12 star GM5 to test
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- Lifer
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Electrics issue- roof and wipers…?
Oh I assumed you had loads or I would have offered too. Sorry.
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Electrics issue- roof and wipers…?
If the car has an aftermarket radio or any other aftermarket item unplug then one by one and try the roof after each item is unplugged.
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Onlinebigwinn
- Lifer
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Electrics issue- roof and wipers…?
Well the gm5 swap made no difference
I’ll unplug the wiper motor next to see if that makes a change
Also noticed I have no hvac lights on the controls apart from the rear demister…
I’ll unplug the wiper motor next to see if that makes a change
Also noticed I have no hvac lights on the controls apart from the rear demister…
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Onlinebigwinn
- Lifer
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Electrics issue- roof and wipers…?
What's the thought process here- that it may be affecting the k-bus?
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