Motorhome will not start

[bobandsue]

Hi hope someone out there can help, I have a 2010 Bolero 680fb that will not start.
* No dashboard lights and ignition dead
* Control panel shows 10v and Red light for vehicle battery
* Display unit on the PCU shows engine battery at 2.7v
* Engine and Leisure batteries both fully charged and have been tested as OK
* Block connector to terminal P1 on the PCU shows 2.7v
* Power to Dashboard fuseboard and Engine compartment fuseboard both read 2.7v
* Can start the vehicle by jump starting it
Any help anyone can give I would really appreciate before I end up tearing the motorhome apart

 

[10tenmen]

Try connecting just the earth negative lead to the battery to a good earth, it could be a s simple as a bad earth.

 

[bobandsue]

Thanks will give it a try

 

[Googlebot]

I would agree it sounds like a bad earth.

Had some really weird faults with a bad earth in the past.