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JRCouture's avatar
JRCouture
Explorer
May 08, 2015

electrical issues relay switch

I have a 2000 Fleetwood Bounder Class A, 31W approx 89000. I was driving down the road and the power failed totally. no power to the starter or to the coach no lights working. Nothing on the dash no lights nothing when I tried to restart the motorhome. No pump noise nothing. The tow truck driver tried to boost the unit and I did get lights on the dash but no cranking or fuel pump sounds. The boost did not work. When I changed the motor battery after the emergency relay switch was disconnected, then the motor started but still no coach power. (the power to the coach does work on electric 110 system. when I tried to recharge the batteries in the coach they are drawing 8.10 as is the motor battery. Does this mean the relay switch is toast?? Help please. JC
Class A

9 Replies

  • JRCouture's avatar
    JRCouture
    Explorer
    May 09, 2015
    thank you so very much for all your pointers. I have done as you said I believe we have tracked it down. It was the battery disconnect relay. I put in a new motor battery and a new coach battery and the disconnect relay closed the way it should. The Coach batteries were so low that they couldn't trip the disconnect closed. with the new battery it is now operating. Thank you so much guys. John C
  • Effy's avatar
    Effy
    Explorer II
    May 08, 2015
    RLS7201 wrote:
    Look in your Battery Control center (some where close to your batteries). On the inside of the cover to your BCC is a wiring diagram. Find the chassis battery disconnect relay and check it for continuity. It has been known to fail and cause you described problem.

    Richard


    That's what I was referring to but you said it better than I did. I do know that the fix was to bypass the BCC disconnect. Do that and you'll never have the issue again.
  • RLS7201's avatar
    RLS7201
    Explorer II
    May 08, 2015
    Look in your Battery Control center (some where close to your batteries). On the inside of the cover to your BCC is a wiring diagram. Find the chassis battery disconnect relay and check it for continuity. It has been known to fail and cause you described problem.

    Richard
  • Effy's avatar
    Effy
    Explorer II
    May 08, 2015
    Did that year have a disconnect to the BCC? In recent models there was a recall that the BCC would fail and disconnect all power from the chassis. Did you test the chassis battery itself to ensure it actually has a charge?
  • enblethen's avatar
    enblethen
    Nomad
    May 08, 2015
    No, not the 120 volt household style circuit breakers.
    You are looking for a small one inch two posted 12 volt DC circuit breaker.
    Locate your coach batteries, follow the large positive cable, the circuit breaker is normally fairly close to the batteries.
    If you have a battery control center under the hood, the breakers are normally inside it.
  • JRCouture's avatar
    JRCouture
    Explorer
    May 08, 2015
    one other thing i did not mention all the batteries were completely discharged. zero power not even the carbon monoxide alarm light. John
  • JRCouture's avatar
    JRCouture
    Explorer
    May 08, 2015
    I did reset the(turned them off and on) coach breakers and still no power.
  • enblethen's avatar
    enblethen
    Nomad
    May 08, 2015
    You could have a bad or tripped circuit breaker between the coach batteries and the battery disconnect.

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