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S80 low beam, harness severe heat damage, have replaced, fails again S80 2001

posted by  timbales on  Tue Jun 19 15:16 CST 2012
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last visit: Tue Jun 19 15:07 CST 2012
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Dipped Beam failure is the error prompt I believe ( son's car ). We've found info describing the SHUNT ( resistor ) having a poor/carboned/burnt connection to the CEM. We pulled the CEM down to examine and all shunts are fine, no telltale heat damage on CEM or on any shunts or relays. The damage to the drivers side low beam harness is profound. Ceramic remains, and plastic insulation melted away. Burn your car down level damage.
So, with no problem evident at the shunt on the CEM, what recommendations does my esteemed audience have. I mean "help me" please :-)

Can the shunt be 'bad' and have no visible damage?

Can we ohm out the shunt to see if it is okay?

Which, shunt is the dipped beam shunt?

Should I use one of the other, identical shunts, on the board, walking the problem, perhaps elsewhere?

Thanks guys, I appreciate any help you can throw at this.

Tim Bales





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New S80 low beam, harness severe heat damage, have replaced, fails again [S80][2001]
posted by  timbales  on Tue Jun 19 15:16 CST 2012 >


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