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2007 Jetta 12v/power point/cigarette lighter

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Discussion starter · #1 ·
Hello,

My 2007 Jetta’s 12v sockets were not working since I bought the car a few months back, I checked the fuses, and they are ok. I tested for voltage at the components and they are not receiving any.

What I’m asking for is if anyone knows a way I can get my hands on a wiring diagram so I can trace the wires back to the fuse panel, I know from the fuse panel it looks like it goes to an early version of the J393, but I need to know which pins are which (pin location, and color of wires) so I can backprobe as well as check for continuity between the end wires. Is there a website that has wiring diagrams available?
 
Discussion starter · #3 ·
GTI's said:
Check fuse Sc F42 on the dash panel side fuse box from build dates from May 06 and Sc F 25 for build dates to May 06.
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Fuses have been checked and are ok. I need to determine if there is corrosion in the lines so I need to be able to follow the wires.
 
#10 · (Edited)
Yes a load reduction relay before the fuse which would not be your issue based on what you posted about the fuse

"the fuse has power, I’m getting battery voltage in all awake positions"

If that reduction relay was not working as designed you would be having more issues beside the 12v sockets, you would also have issues with Hvac.
 
Discussion starter · #11 ·
I understand that. I’m stating it also has a relay. I’m not concerned about that.

You got a way to show me where connector B348 is? I feel like that is the gateway right behind the fuse panel (wiring from fuse panel goes out, then into a module, which I am assuming is the J393, and then out to the components).
 
#12 ·
A solid black dot is a fixed connection(solder/weld point etc.) in the wiring harness, this one B348 is number 1 main harness has three wires fixed at that point based on the wd and its exact location is not given.
 
Discussion starter · #13 ·
GTI's said:
A solid black dot is a fixed connection(solder/weld point etc.) in the wiring harness, this one B348 is number 1 main harness has three wires fixed at that point based on the wd and its exact location is not given.
Click to expand...
I think it’s failing on the back end of the fuse panel. I’m assuming this is a Bentley manual page?
 
#16 ·
And you have all the info I have for that simple circuit. If you have power at the correct fuse when the key is in the on position or the engine is running then I would be looking beyond the fuse down that one wire base on that wd. Based on that wd I would go and get access to the socket in the center console and trace that power wire back to the solder/weld point back to make sure you have no issues there, if none are found and no power there work you way back to the fuse. If you have a wire tracer you might want to try that.
 
Discussion starter · #17 ·
GTI's said:
And you have all the info I have for that simple circuit. If you have power at the correct fuse when the key is in the on position or the engine is running then I would be looking beyond the fuse down that one wire base on that wd. Based on that wd I would go and get access to the socket in the center console and trace that power wire back to the solder/weld point back to make sure you have no issues there, if none are found and no power there work you way back to the fuse. If you have a wire tracer you might want to try that.
Click to expand...
I understand this, I’m asking you where you see an X-relay. I see fuse panel c, and the wiring, I know how to trace wires.
 
#18 · (Edited)
Forgive me for jumping in. I'm trying to follow this using the wiring diagrams in my hard-cover Mk5 Jetta Bentley Manual.

From what I'm seeing for Jetta with build date from July 2006, it's not quite simple. The 12v outlets are powered by black/red (console) and red/black (trunk) wires, branching off from a black/red wire from the 20a SC42 fuse which protects both outlets. All those wires are 1.5mm cross-section diameter.

It looks like SC42 is tied in to the 20a SC41 fuse internally to the fuse panel. So that's all generally consistent with GTI's's diagrams above.

SC41 (along with SC42) gets its power through a 6.0mm black/yellow wire that comes from the J519 Central Electronics Module at J519 pin I/2.

I don't think there's a unique power wire for the outlets coming to the J519.

I know what an X load-reduction circuit is. I don't see those identified in the wiring diagrams, aside from a general mention in text of what an X circuit is. I think that function is controlled internally by the J519...
 
#19 · (Edited)
Yes that is pretty much all of it, and seeing that OP has power by Sc f42 with the key in on position or engine running the issue of not having power at the sockets is beyond the f42 fuse and not going back to the relay or cecm or the fuse that supplies that relay etc.
 
#20 · (Edited)
Image



No sure why Op is looking for issues upstream of fuse F42 which OP states has 12v and not downstream to the sockets that do not have power. The x relay, cecm, fuses, key position and battery are all working as designed to provide the power that Op states is on F42.
 
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