Fitted Cruise control, but doesn't work

[sockpuppet]

I fitted cruise control to my TDI 150 using 18G953513 stalk and 1J1970011F harness, which are supposed to be Golf Mk4 compatible. There were 5 wires on the harness, 4 of them with pins on the end. The 4 with pins on were:
1) Blue - fitted to slot 1 on the T10 connector
2) Red/yellow - fitted to Slot 2 on the T10 connector
3) Black/Yellow - fitted to Slot 3 on the T10 Connector
4) White - fitted to Slot 9 on the T10 Connector

The other wire was blue and I connected that to the blue/grey wire in slot 5 of the fuse box.

I enabled crusie control in VAG-COM, but it doesn't work so I did a bit more investigation and checking engine block 6 I could see the final number was 0.0 which means its enabled and when I switch the cruise control to on the block changes to 1.0, I also see the brake switch block at 1.0.0 and that changes to 1.1.1 when pressed.

Is there any other blocks I can check regarding the cruise control? Is it possible to have the wrong harness as all the instructions show a connector at the fuse box end and black/white for the 3rd wire rather than Black/Yellow.

 

[Thai-wronghorse]

This is of interest as I've just received a cruise control kit in the post and was hoping to install it this weekend.


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[Thai-wronghorse]

Did your kit come with any installation instructions or did you follow a guide?
I've seen a few guides online but they seem to focus on the petrol ones and I'm sure they have any extra piece of loom to install so I'm unsure where I'm wiring into exactly.
I fitted CC on a few mk3 Golfs and that simply plugged into an existing socket and took minutes.

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[sockpuppet]

There was no instructions, I used a combination of the pic-heavy guide from here and Mk4 Golf Cruise install.pdf.

The Diesels are supposed to already have the ECU wired so should only need the 5 wire harness. A few things that I now know are the T10 connector, you compress the levers both sides and it pushes downwards, I would put a sock in the gap of the plastic on the right side of the footwell as the bolt on the right side of the fuse/relay frame fell in there and is still there and when you release the airbag the screwdriver has to go all the way in to release the clips, I was worried about poking the airbag and setting it off, but the clips are against metal covers so its safe. Took me about 3-4 hours in all, but I wasn't rushing.

 

[Battoussai]

There was no instructions, I used a combination of the pic-heavy guide from here and Mk4 Golf Cruise install.pdf.

The Diesels are supposed to already have the ECU wired so should only need the 5 wire harness. A few things that I now know are the T10 connector, you compress the levers both sides and it pushes downwards, I would put a sock in the gap of the plastic on the right side of the footwell as the bolt on the right side of the fuse/relay frame fell in there and is still there and when you release the airbag the screwdriver has to go all the way in to release the clips, I was worried about poking the airbag and setting it off, but the clips are against metal covers so its safe. Took me about 3-4 hours in all, but I wasn't rushing.

Hi there.

Are you sure the Diesel ones don't need the ECU loom swap?

 

[sockpuppet]

According to all the manuals I have looked at, the diesels don't need the ECU loom.

http://vwgolfr32.co.uk/cruise_control/

Says TDI's are pre-wired.

 

[Homer Simpson]

Hi there.

Are you sure the Diesel ones don't need the ECU loom swap?

Yes. I did mine a couple of months ago and it was not required.

@Sockpuppet

Did you wire (blue I think) into the fuse in the right hand side of the dash?

 

[Thai-wronghorse]

I've just been looking at the loom, it's the non terminated black and blue wire from what I understand.
Does the fuse socket have an empty terminal clip inside it?

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[sockpuppet]

The number 5 fuse terminal (7.5 amp fuse) has a black-blue wire going into one side and I stripped that wire back soldered the non-terminated wire to it and then insulated the soldering. I did a bit more investigation and the cruise control needs a press of the brake pedal and the clutch pedal before it becomes active, I know the brake pedal switch works as the brake lights come up (and it's only a few months old) and it changes values in block 6 row 2 of engine blocks 01 in VAG-COM when I press the brake, but when I pressed the clutch pedal the values in that field didn't change and according to Ross tech the clutch pedal sensor whould also register in that field.
I have ordered a new clutch switch, but I would have expected something to show in VAG-COM if the switch wasn't working. I also tried pressing the accelerator to 3000 revs and holding it there, then pressing the clutch which is supposed to drop the revs to idle, but the revs stay at 3000.

 

[mty12345]

I don't know about the cruise control as such, but i know that the clutch switch should indeed change from a 0 to a 1, i was looking at it only a few days ago. I've also had my clutch switch go and had no fault code on vcds, so that could well be the issue.

 

[chriswales6]

It does sound like your clutch pedal switch is faulty and that would stop the cruise control engaging.

Just for reference the cruise control doesn't need the brake and clutch pressed together for it to engage. If either of the pedals are pressed when running on cruise it deactivates it. If the computer can't read the setting of either pedal it stops the SET button from activating the cruise. The rev drop trick only works on the brake pedal, if it also did that when you pressed the clutch in hill starts would be a right PITA

I fitted a cheap kit to my TDI last summer, using the guides on this site and uk-mkivs.net. My kit also had a bare end to the wire going to fuse box. So I a soldered tap onto the wire coming out of the fuse box instead. I use the CC most days and it's still working fine.

 

[sockpuppet]

Fixed! Replaced the clutch switch (part 1J0 927 189E) and it works a treat.

 

[Thai-wronghorse]

Good to hear mate, time to get mine fitted now.

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