Problem. 2006 Volvo no tail lights but everything else works

Discussion in 'Volvo Forum' started by Dustin Krahn, Feb 3, 2015.

  1. Dustin Krahn

    Dustin Krahn Bobtail Member

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    Feb 3, 2015
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    Hi there. I'm new to this forum thing.

    I own a 2006 Volvo vnl64t300 truck. We use it on the farm. I can't get the tail lights to work. Signal,brake,4 way all work but tail lights don't. Checked fuses and relays all seem to be good. Does anyone have any advise on how to fix this. A breakdown on the wiring harness. Tried calling Volvo but they were no help to me.

    Thanks

    dustin
     
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  3. Pablo-UA

    Pablo-UA Road Train Member

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    start with reading actual LCM (MID 216) fault codes.
     
  4. Dustin Krahn

    Dustin Krahn Bobtail Member

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    Feb 3, 2015
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    Okay. And that's located in the message system in the dashboard
     
  5. Pablo-UA

    Pablo-UA Road Train Member

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    yes, in fault diagnostic menu
     
  6. Dustin Krahn

    Dustin Krahn Bobtail Member

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    Feb 3, 2015
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    Just checked it. No codes are thrown. Any other suggestions
     
  7. Pablo-UA

    Pablo-UA Road Train Member

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    LCM has no fuses for every bulb,. There are smart MOSFETs with short/open circuit detection (by Infeneon) and high current protection. So any faulty lamp - fault code.

    If u have no tail lamps totally - check six LCM Power supply fuses. If one ore more are bad - LCM saves power and disables tracktor tail lamp if trailer light are connected
     
  8. flood

    flood Road Train Member

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    had the same thing happen on my 2006..... check the wireing at the back.... mine was a bad plug right before the tail light (rusted pin)
     
  9. d281833

    d281833 Heavy Load Member

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    Mine done the same, pull the large harness apart at the tail end and check all the pins for corrosion and being loose. Clean'em up and put it back together and try that. Mine was a pin not getting good contact.
     
  10. superhill56

    superhill56 Light Load Member

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    You get it figured out? I have the same problem but with the reverse light.
     
  11. flood

    flood Road Train Member

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    Check the ground at the bsck
     
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