B1330 - System Voltage Malfunction
(00) - Present

In PDM and DDM.Any ideas?could it be programming the module?

And battery drain. amps jumping up and down from 0.25 to 0.95.drains the battery in a week.Lights have a reaction to revs on low revs.
Tried to remove fuses one by one no changes.New battery,new alternator no luck
I spend few days looking for solutions, so please don't tell me what the code means I can find it myself on google.
Please tell me how to check the ground on door switch?How to check A/C module?
With all that CAN BUS system I'm confused,please help