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Xenon issue.

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StatusDenied
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Xenon issue.

Post by StatusDenied » Wed Feb 24, 2021 10:42 pm

Neither xenon are working on the drivers side connector however both work on the passenger side harness.

Measured the volts with a multimeter.. And got this. Why is the drivers side connector measuring nearly no volts on the pins that should be measuring higher? Any ideas?
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Chris_D
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Xenon issue.

Post by Chris_D » Thu Feb 25, 2021 9:34 am

Have you tried swapping the ballasts and igniters around too?
E85 3.0i roadie (03) 'Benny'. E93 320d M-Sport Cabrio (11) 'Bob'.
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ph001
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Xenon issue.

Post by ph001 » Thu Feb 25, 2021 2:28 pm

The headlights are controlled from the LCM module (pcb behind the headlight switch). I can't imagine why it would control each headlamp individually but I'm struggling to come up with any other reason short of a loom fault which I don't think I've ever encountered in my 5yrs on this forum.
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StatusDenied
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Xenon issue.

Post by StatusDenied » Thu Feb 25, 2021 3:33 pm

Aye swapped the whole light across to the other side.

Its odd, could it be a faulty earth? I'm going to unplug the terminal connectors and check them one by one later.

StatusDenied
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Xenon issue.

Post by StatusDenied » Thu Feb 25, 2021 3:36 pm

Oddly it posts the bulb out warning when it's removed completely from the harness but nothing when it's connected even though it's not working.

StatusDenied
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Xenon issue.

Post by StatusDenied » Thu Feb 25, 2021 4:12 pm

Through process of elimination i've since found...

When lights are turned on Low Beam the

High Beam pin gets 12 volts off chassis and with connector earth (PIN3)
Low Beam pin gets 0.02 off chasis and its own connector earth (PIN7)

When lights are turned to high beam

Shutter on PIN 8 gets 12 volts off chassis and its shared earth with low beams on Pin 7.

So whatever the issue is, its directly linked to only the low beam pin. Doesnt appear to be the earth.

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