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Problem with driver side fog light


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#1 Mario MKV

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Posted 22 May 2020 - 08:47 AM

Hello,
I'm having issues with driver side fog light on my Golf Mk5 GT tdi. Passenger side works perfectly fine but driver side won't. I tested with voltmeter and when bulb is out it shows 12v and when i place bulb shows 1.5v. Bulbs are new. Can you help me?
Thanks,




#2 northpole

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Posted 22 May 2020 - 08:49 AM

Problem usually is a corroded ground so either the complete foglight housing needs replacing or the ground wire is the problem
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#3 Mario MKV

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Posted 22 May 2020 - 08:55 AM

Thanks for reply,

I tried with other cable ground but still same problem. i tested the cables and they seems ok,also and 30 Fuse. Fog light housing are new 



#4 ttg4l

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Posted 22 May 2020 - 09:12 AM

There's high resistance in the circuit somewhere.

Use a multimeter to check for continuity between power and ground, and for resistance on the power wire from the fuse box to the plug.

If you do see high resistance on the power wire, then follow it back from the plug to the next junction and check resistance again between that junction and the fuse box. Keep repeating this for each section of the power wire until you no longer see high resistance. The section with high resistance is the culprit.
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#5 adam-

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Posted 22 May 2020 - 09:24 AM

Both fogs are grounded together and go to a common ground near the fog wiring harness.

 

Power is supplied via. pin 2 of the 8 pin connector near the left headlight (for the left fog).  Pin 3 of the 8 pin connector supplies the right fog.  Cables then go back to the onboard supply unit and have no fuse.


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#6 Mario MKV

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Posted 25 May 2020 - 09:08 AM

After 2 days searching and working for my drivers side fog light, i found the problem. J519 CECM was the problem. After changing that module, all fog lights are working. 

Thanks all for response
 


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#7 adam-

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Posted 25 May 2020 - 09:49 AM

Telt ye


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