Steering Column Wiring

robbyb20

Well-known member
Oct 2, 2019
227
34
Seattle
Hello,

I am trying to figure out what this plug is for. I dont see anything obivous that it should plug in to and i dont seem to be missing any functionality. Any ideas?

Thanks
 

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robbyb20

Well-known member
Oct 2, 2019
227
34
Seattle
Airbag module?
I apologize for not responding, picking back up on this thread.

I don’t see anything I can plug it into on the steering wheel or in the steering wheel column area.

I’m also going to be replacing the steering wheel cruise control switch this weekend and thought maybe it was related since mine isn’t working and I’ve already changed out all of the other CC components.
 

discostew

Well-known member
Sep 14, 2010
7,706
1,015
Northern Illinois
I apologize for not responding, picking back up on this thread.

I don’t see anything I can plug it into on the steering wheel or in the steering wheel column area.

I’m also going to be replacing the steering wheel cruise control switch this weekend and thought maybe it was related since mine isn’t working and I’ve already changed out all of the other CC components.
Your going to replace the cruise switch in the steering wheel because you have replaced everything else in the system and it's the only thing left? Is that the reasoning here?
 

JUKE179r

Well-known member
Sep 14, 2016
761
95
Suffolkshire, UK
I’m also going to be replacing the steering wheel cruise control switch this weekend and thought maybe it was related since mine isn’t working and I’ve already changed out all of the other CC components.
I missed this part.
Do you have LED bulbs in any of your brake lights?
 

robbyb20

Well-known member
Oct 2, 2019
227
34
Seattle
Your going to replace the cruise switch in the steering wheel because you have replaced everything else in the system and it's the only thing left? Is that the reasoning here?
So far i have replaced the tubing (air tight via sucking on the tube😬) , vaccum pump (bought/tested by local rover mechanic) and brake pedal switch (made sure it actually moves when brake is pushed via extending the arm). The switch in the dash lights up after taking apart and cleaning (did this one and about 8 others that werent working but now are).

I do not have any LED lights in my vehicle.
 

rover rob

Well-known member
Mar 29, 2016
273
56
upstate NY
So far i have replaced the tubing (air tight via sucking on the tube😬) , vaccum pump (bought/tested by local rover mechanic) and brake pedal switch (made sure it actually moves when brake is pushed via extending the arm). The switch in the dash lights up after taking apart and cleaning (did this one and about 8 others that werent working but now are).

I do not have any LED lights in my vehicle.
did you check the vacuum diaphragm that holds the throttle linkage ?
 

robbyb20

Well-known member
Oct 2, 2019
227
34
Seattle
did you check the vacuum diaphragm that holds the throttle linkage ?
Yes, I make sure it moves with the regular throttle when pulled, make sure the vacuum seal is still functional.

Open to any other sugestions surrounding that part of the linkage.
 

WaltNYC

Well-known member
Mar 3, 2010
707
135
NYC
If this is a D1 the CC ECU is known to go bad. Replace with an updated unit from a GEMS P38. You'll need to change the pigtail too, or do surgery on your new CC ECU.
 
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robbyb20

Well-known member
Oct 2, 2019
227
34
Seattle
If this is a D1 the CC ECU is known to go bad. Replace with an updated unit from a GEMS P38. You'll need to change the pigtail too, or do surgery on your new CC ECU.
Is this possibly related? Id rather pull and re-solder.

 

discostew

Well-known member
Sep 14, 2010
7,706
1,015
Northern Illinois
If this is a D1 the CC ECU is known to go bad. Replace with an updated unit from a GEMS P38. You'll need to change the pigtail too, or do surgery on your new CC ECU.
If you have not opened up the cruise eco and looked for burnt up drivers, do that. It's got 2 drivers in it. One closes off the vent in the pump/ the other runs the vacuum pump. One of those 2 drivers has probably shit the bed
 

robbyb20

Well-known member
Oct 2, 2019
227
34
Seattle
If you have not opened up the cruise eco and looked for burnt up drivers, do that. It's got 2 drivers in it. One closes off the vent in the pump/ the other runs the vacuum pump. One of those 2 drivers has probably shit the bed
Any telltale signs of a burnt up IC? I’ll look for scoring but I’m sure the smell will have disappeared by now.
 

robbyb20

Well-known member
Oct 2, 2019
227
34
Seattle
Not seeing anything abnormal. Solder looks ok. I assume thats a protective coating. It does have a smell of burnt electronics to it though. Replacement unit is pretty cheap. Ill buy one and have on hand as back up just incase.
 

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