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2014 Cascadia Evo. Radio goes off and on..

Discussion in 'Freightliner Forum' started by Auctioneer, Jan 14, 2015.

Page 1 of 3
  1. Jan 14, 2015 #1
    Auctioneer

    Auctioneer Light Load Member

    72
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    May 7, 2010
    Trenton, NC
    0
    I have a 2014 Cascadia w DD 15 Eng. and DT12 trans. The radio will go off (sometimes for just a moment, sometimes for 2 months) then start working again. I have checked all fuses = good. I have checked the connector on the back of the radio and found that when the unit is working there are 3 pins with power to them. When it is not working there is only 1 pin with power to it. There does not seem to be anything wrong with the radio, just the loss of power on the 2 pins.
    It is also noteworthy that when the radio quits the utility lights on the back of the cab will not work. When the radio comes back on, the utility lights will work.
    Any help on this will be greatly appreciated.
    Phillip
     
    Auctioneer, Jan 14, 2015
    Auctioneer, Jan 14, 2015
    #1
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  3. Jan 14, 2015 #2
    Powder Joints

    Powder Joints Subjective Prognosticator

    7,162
    6,734
    Sep 25, 2007
    Rosamond, SoCal
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    Maybe a cold solder in the radio it self. check for power at the back of the radio when it out. Also might be losing the ground. Cleaning up factor grounds in Freightliners has been standard stuff for many years.
     
    Powder Joints, Jan 14, 2015
    Powder Joints, Jan 14, 2015
    #2
  4. Jan 14, 2015 #3
    GrapeApe

    GrapeApe Road Train Member

    2,215
    2,203
    Jan 7, 2013
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    Obviously the radio and cab lights are related somehow, I just don't see how. A shot in the dark is a low voltage disconnect issue. They start shutting down non essential things when voltage drops. Starting with radio and non needed lights and progressively more and more stuff gets shut off if voltage drops. I cannot remember if that was in the Cab SAM perimeters or not, but I think it is. You'd need ServiceLink to check that out. It's possible that the SAM is getting a bad connection and falsely seeing low voltage.

    You can check the basics, battery terms all clean and tight, the Cabin SAM is behind the glove box and they had a history of leaks getting them wet. Check the connections on that and look for signs of moisture/corrosion in the plugs.

    Just a guess though, I really have no clue.
     
    GrapeApe, Jan 14, 2015
    GrapeApe, Jan 14, 2015
    #3
    Cummimgs Trucking LLC Thanks this.
  5. Feb 7, 2015 #4
    Auctioneer

    Auctioneer Light Load Member

    72
    38
    May 7, 2010
    Trenton, NC
    0
    Thanks for your info. I have checked the power input to the radio and there are 3 terminals on the radio connector that must have power for the radio to work. when the radio stops working only one (the Battery terminal) has power. The "other" two are not powered. I have been able to "wiggle" wires on behind the glove box at the far right side of the fuse panel and cause the radio to go off, problem is I can't get it back on any more. I do know that it is NOT a low voltage cut off because the problem occurs while driving wit 14.+ volts and when parked with 13. + volts.

    I am scheduled to take the truck into a Freightliner Dealership on the 16th of this month, there are other issues as well.

    As a side note, the utility lights are now working and seem to have no connection to the Radio problem, go figure.......

    Thanks Again
     
    Last edited: Feb 7, 2015
    Auctioneer, Feb 7, 2015
    Auctioneer, Feb 7, 2015
    #4
  7. Mar 14, 2015 #5
    shim2000

    shim2000 Bobtail Member

    22
    0
    Nov 30, 2013
    0
    I have 2015, the radio will shut off and turn back on only happens while driving, did you find out what the cause was on your truck??
     
    shim2000, Mar 14, 2015
    shim2000, Mar 14, 2015
    #5
  8. Mar 14, 2015 #6
    RSQ20

    RSQ20 Medium Load Member

    315
    92
    Jul 11, 2013
    Upper Fraser Valley, BC Canada
    0
    Bad connection on the feed,, time to break out the meter/test light and chase the problem.

    Or, use a tone generator (when you have the issue), this is easy and non destructive..

    The Stealer will charge big $$$ to chase the issue..

    .... Philip
     
    RSQ20, Mar 14, 2015
    RSQ20, Mar 14, 2015
    #6
  9. Mar 14, 2015 #7
    Grumppy

    Grumppy Trucker Forum STAFF Staff Member

    2,812
    9,050
    Dec 11, 2010
    West Monroe, La
    0
    I also have a 2015 Cascadia & the radio will intermittently go off for about 1 or 2 seconds, the "WELCOME" will scroll across the face & it will come right back on. Its never off for more than a second or so, before it re-powers & comes back on. Sometimes it may do it 4 or 5 times in one day & it may not happen again for a week or so. I have no clue. I am hoping someone will find the solution though.

    It doesn't reset the "presets" or loose it's channel setting, clock setting or anything else. It just goes off & right back on.

    Mine doesn't only do it while driving though. I can be sitting at a shipper/receiver with the engine off & it still does it. So, its not like I am hitting a bump in the road or vibration or something like that, that causes a disconnect from a loose or bad connection etc. It does it intermittently with no rhyme or reason.

    I've had the truck since June 2014 & its always done it.
     
    Grumppy, Mar 14, 2015
    Grumppy, Mar 14, 2015
    #7
  10. Mar 14, 2015 #8
    shim2000

    shim2000 Bobtail Member

    22
    0
    Nov 30, 2013
    0
    with that being said I wonder if it's overheating or maybe a bad radio.......
     
    shim2000, Mar 14, 2015
    shim2000, Mar 14, 2015
    #8
  11. Mar 14, 2015 #9
    RSQ20

    RSQ20 Medium Load Member

    315
    92
    Jul 11, 2013
    Upper Fraser Valley, BC Canada
    0
    There are 3 power feed for the radio


    1. Main power (switched)
    2. Memory/clock (fused/unswitched), and
    3. lights.

    You can lose main power without losing the others, check for a bad power feed connection...

    ... Philip
     
    Last edited: Mar 14, 2015
    RSQ20, Mar 14, 2015
    RSQ20, Mar 14, 2015
    #9
    Grumppy Thanks this.
  12. Mar 14, 2015 #10
    shim2000

    shim2000 Bobtail Member

    22
    0
    Nov 30, 2013
    0
    In a car if you disconnect the main power source to the radio everything is lost including presets and the clock, I know this from installing aftermarket radios
     
    Last edited: Mar 14, 2015
    shim2000, Mar 14, 2015
    shim2000, Mar 14, 2015
    #10
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