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2010 Cascadia getting electrial codes

Discussion in 'Freightliner Forum' started by tallmon, Jan 20, 2017.

  1. Jan 20, 2017 #1
    tallmon

    tallmon Medium Load Member

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    Oct 22, 2014
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    I have a 2010 Freightliner Cascadia 125 . I have been getting these 3 codes:
    SA 71 SPN 520409 FMI 3
    SA 71 SPN 520604 FMI 3
    SA 71 SPN 520407 FMI 3
    I know those have to do with trailer lights being shorted etc and the advertising light.... this happens with multiple trailers. Anyone else see this? I haven't changed the power cord yet - will do that next.
     
    tallmon, Jan 20, 2017
    tallmon, Jan 20, 2017
    #1
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  3. Feb 7, 2017 #2
    RocketyMan

    RocketyMan Medium Load Member

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    I guess I missed this post.

    71/520409/3--Trailer turn lamp left: Fuse 5 - Voltage above normal, or shorted to high source

    71/520604/3--Trailer stop lamps: Fuse 12 - Voltage above normal, or shorted to high source

    71/520407/3--Trailer turn lamp right: Fuse 8 - Voltage above normal, or shorted to high source

    I'd check your wiring from the SAMCHASS primary recepticle to the 7-way connector. Possible short circuit. Does this happen regardless if you connect to a trailer? Or only connecting 7-way to a trailer? What about replacing the trailer cord?

    Any updates?
     
    RocketyMan, Feb 7, 2017
    RocketyMan, Feb 7, 2017
    #2
  4. Feb 7, 2017 #3
    tallmon

    tallmon Medium Load Member

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    Replaced the chord and same result. Where is the SAMCHASS recepticle? It only happens when connected to a trailer.
     
    tallmon, Feb 7, 2017
    tallmon, Feb 7, 2017
    #3
  5. Feb 7, 2017 #4
    RocketyMan

    RocketyMan Medium Load Member

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    I'm not sure if your truck has a PLC filter or not for the blue center wire. The intermediate connectors will be BOC just before they connect to the external 7-way.

    The connector of the SAMCHASS you need to be concerned with is X55-2,3,4 and X53-7,9. Then look for the connector in between. Since the FMI is 3, I'm wondering if something is going on with shorting to the center 7 pin.
     
    RocketyMan, Feb 7, 2017
    RocketyMan, Feb 7, 2017
    #4
    tallmon Thanks this.
  7. Feb 7, 2017 #5
    tallmon

    tallmon Medium Load Member

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    Oct 22, 2014
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    Thanks - I'll take a look at that...
     
    tallmon, Feb 7, 2017
    tallmon, Feb 7, 2017
    #5
  8. Feb 12, 2019 #6
    mhyn

    mhyn Road Train Member

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    Northridge, CA
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    PLC filter? what i
    PLC filter? what is it and where it is located?
     
    mhyn, Feb 12, 2019
    mhyn, Feb 12, 2019
    #6
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