Motorhome will not start

Nov 21, 2013
2
1
West Sussex
Funster No
29,110
MH
Swift Belero 650fb
Exp
10years
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
 
Jun 16, 2017
105
172
Bridlington
Funster No
49,041
MH
Pilote P650GJ
Exp
Newbie
Try connecting just the earth negative lead to the battery to a good earth, it could be a s simple as a bad earth.
 
Sep 29, 2019
815
2,533
Funster No
64,846
MH
Hymer Exsis
Exp
20 years
I would agree it sounds like a bad earth.

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