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Old 06-10-2012, 01:40 PM   #3
FightingSioux
Registered User
 
Join Date: Jun 2012
Location: GA, USA
Posts: 6
My Ride: 2005 330Ci
I have now tried the entire passenger light assembly on driver side and no light. Driver assembly on passenger side light works. So it can't be any of the modules or light assembly.

Ampmeter on the grey plug at the headlight assembly shows voltage on the passenger side but not on the driver side plug. Wires and pins that are visible seem to be ok.

Traced wires from there to another box under the hood on driver side that has several 35 amp fuses. All fuses are tested good but I don't know what fuse goes to what to test the circuit, ie.. Which ones should have power with the light on and which ones wouldnt.

The strange thing is that the driver side was working from the dealer to home. Parked the car for a couple days waiting for the new control unit. Replaced it on passenger side and turned the lights on. that light now worked but the driver side didn't come on and tripped the error on the dash.
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