The battery in the vehicle is a 95Ah, This a minibus with several extra loads like lighting, diesel heater, however there is also the comfortmatic and I have read up in posts by several people saying that the battery should a 110Ah in there. I am trying to figure out issues with the comfortmatic and want to eliminate any possibility the battery is causing any issues. I have cleaned and replaced the gearbox earth cable, there was no change with the voltage reading at gearbox, so few days ago I added another earth cable body to starter bolt and this improved the voltage reading at gearbox by 1 volt!
I have a intermittent fault at gearbox P0919.
Battery voltage readings taken just now after being sat for 24 hours from engine and gearbox attached (engine off)