I'm hoping some of you pros can help me solve this one. PLEASE!!!
Symptoms: 12v system drops to 1v when I run anything at all, tv, water pump, lights. Everything 12v works perfectly if I'm plugged in or if I run the generator. Although, when I unplug or cut off the generator the 12v system goes dead completely. If I start the engine, plug in or start the generator again, I get 12v power back (sort of, see the last symptom). If for any reason I cut off the 12v to the coach, I cannot turn it back on unless I'm plugged in or the engine is running. In short, I can't dry camp on 12v alone. I do have 12v in the coach. The LEDs are all lit up. If I don't start anything, I have 12.6v at every 12v fuse. But when it drops to 1v if I turn something on, it's dead. If I turn it off, the LEDs come back on and again I have 12.6 volts.
What I've done: Checked the Low Voltage Disconnect. It has 12.6 volts at the "sens" and at the "Vin" posts. Seems the LVD is fine. Cleaned a ground connected to the chassis near the battery compartment. Found a loose cable connected to the negative of the battery (I could actually pull the wire out from the battery connector) and tightened it with plyers. I checked the two coach batteries and both have 12.7 volts.
I suspect a bad ground, but I don't know where else to look, and it would have to be really bad... really loose.
Where would you look? What would you test?
Thanks
2002 Chinook Concourse
Bob
Symptoms: 12v system drops to 1v when I run anything at all, tv, water pump, lights. Everything 12v works perfectly if I'm plugged in or if I run the generator. Although, when I unplug or cut off the generator the 12v system goes dead completely. If I start the engine, plug in or start the generator again, I get 12v power back (sort of, see the last symptom). If for any reason I cut off the 12v to the coach, I cannot turn it back on unless I'm plugged in or the engine is running. In short, I can't dry camp on 12v alone. I do have 12v in the coach. The LEDs are all lit up. If I don't start anything, I have 12.6v at every 12v fuse. But when it drops to 1v if I turn something on, it's dead. If I turn it off, the LEDs come back on and again I have 12.6 volts.
What I've done: Checked the Low Voltage Disconnect. It has 12.6 volts at the "sens" and at the "Vin" posts. Seems the LVD is fine. Cleaned a ground connected to the chassis near the battery compartment. Found a loose cable connected to the negative of the battery (I could actually pull the wire out from the battery connector) and tightened it with plyers. I checked the two coach batteries and both have 12.7 volts.
I suspect a bad ground, but I don't know where else to look, and it would have to be really bad... really loose.
Where would you look? What would you test?
Thanks
2002 Chinook Concourse
Bob